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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
| commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
| tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog | |
| parent | Initial commit. (diff) | |
| download | mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.tar.xz mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.zip | |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog')
| -rw-r--r-- | storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog | 1916 |
1 files changed, 1916 insertions, 0 deletions
diff --git a/storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog b/storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog new file mode 100644 index 00000000..edd46dd7 --- /dev/null +++ b/storage/tokudb/PerconaFT/third_party/snappy-1.1.2/ChangeLog @@ -0,0 +1,1916 @@ +------------------------------------------------------------------------ +r83 | snappy.mirrorbot@gmail.com | 2014-02-19 11:31:49 +0100 (Wed, 19 Feb 2014) | 9 lines + +Fix public issue 82: Stop distributing benchmark data files that have +unclear or unsuitable licensing. + +In general, we replace the files we can with liberally licensed data, +and remove all the others (in particular all the parts of the Canterbury +corpus that are not clearly in the public domain). The replacements +do not always have the exact same characteristics as the original ones, +but they are more than good enough to be useful for benchmarking. + +------------------------------------------------------------------------ +r82 | snappy.mirrorbot@gmail.com | 2013-10-25 15:31:27 +0200 (Fri, 25 Oct 2013) | 8 lines + +Add support for padding in the Snappy framed format. + +This is specifically motivated by DICOM's demands that embedded data +must be of an even number of bytes, but could in principle be used for +any sort of padding/alignment needed. + +R=sanjay + +------------------------------------------------------------------------ +r81 | snappy.mirrorbot@gmail.com | 2013-10-15 17:21:31 +0200 (Tue, 15 Oct 2013) | 4 lines + +Release Snappy 1.1.1. + +R=jeff + +------------------------------------------------------------------------ +r80 | snappy.mirrorbot@gmail.com | 2013-08-13 14:55:00 +0200 (Tue, 13 Aug 2013) | 6 lines + +Add autoconf tests for size_t and ssize_t. Sort-of resolves public issue 79; +it would solve the problem if MSVC typically used autoconf. However, it gives +a natural place (config.h) to put the typedef even for MSVC. + +R=jsbell + +------------------------------------------------------------------------ +r79 | snappy.mirrorbot@gmail.com | 2013-07-29 13:06:44 +0200 (Mon, 29 Jul 2013) | 14 lines + +When we compare the number of bytes produced with the offset for a +backreference, make the signedness of the bytes produced clear, +by sticking it into a size_t. This avoids a signed/unsigned compare +warning from MSVC (public issue 71), and also is slightly clearer. + +Since the line is now so long the explanatory comment about the -1u +trick has to go somewhere else anyway, I used the opportunity to +explain it in slightly more detail. + +This is a purely stylistic change; the emitted assembler from GCC +is identical. + +R=jeff + +------------------------------------------------------------------------ +r78 | snappy.mirrorbot@gmail.com | 2013-06-30 21:24:03 +0200 (Sun, 30 Jun 2013) | 111 lines + +In the fast path for decompressing literals, instead of checking +whether there's 16 bytes free and then checking right afterwards +(when having subtracted the literal size) that there are now +5 bytes free, just check once for 21 bytes. This skips a compare +and a branch; although it is easily predictable, it is still +a few cycles on a fast path that we would like to get rid of. + +Benchmarking this yields very confusing results. On open-source +GCC 4.8.1 on Haswell, we get exactly the expected results; the +benchmarks where we hit the fast path for literals (in particular +the two HTML benchmarks and the protobuf benchmark) give very nice +speedups, and the others are not really affected. + +However, benchmarks with Google's GCC branch on other hardware +is much less clear. It seems that we have a weak loss in some cases +(and the win for the “typical” win cases are not nearly as clear), +but that it depends on microarchitecture and plain luck in how we run +the benchmark. Looking at the generated assembler, it seems that +the removal of the if causes other large-scale changes in how the +function is laid out, which makes it likely that this is just bad luck. + +Thus, we should keep this change, even though its exact current impact is +unclear; it's a sensible change per se, and dropping it on the basis of +microoptimization for a given compiler (or even branch of a compiler) +would seem like a bad strategy in the long run. + +Microbenchmark results (all in 64-bit, opt mode): + + Nehalem, Google GCC: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------ + BM_UFlat/0 76747 75591 1.3GB/s html +1.5% + BM_UFlat/1 765756 757040 886.3MB/s urls +1.2% + BM_UFlat/2 10867 10893 10.9GB/s jpg -0.2% + BM_UFlat/3 124 131 1.4GB/s jpg_200 -5.3% + BM_UFlat/4 31663 31596 2.8GB/s pdf +0.2% + BM_UFlat/5 314162 308176 1.2GB/s html4 +1.9% + BM_UFlat/6 29668 29746 790.6MB/s cp -0.3% + BM_UFlat/7 12958 13386 796.4MB/s c -3.2% + BM_UFlat/8 3596 3682 966.0MB/s lsp -2.3% + BM_UFlat/9 1019193 1033493 953.3MB/s xls -1.4% + BM_UFlat/10 239 247 775.3MB/s xls_200 -3.2% + BM_UFlat/11 236411 240271 606.9MB/s txt1 -1.6% + BM_UFlat/12 206639 209768 571.2MB/s txt2 -1.5% + BM_UFlat/13 627803 635722 641.4MB/s txt3 -1.2% + BM_UFlat/14 845932 857816 538.2MB/s txt4 -1.4% + BM_UFlat/15 402107 391670 1.2GB/s bin +2.7% + BM_UFlat/16 283 279 683.6MB/s bin_200 +1.4% + BM_UFlat/17 46070 46815 781.5MB/s sum -1.6% + BM_UFlat/18 5053 5163 782.0MB/s man -2.1% + BM_UFlat/19 79721 76581 1.4GB/s pb +4.1% + BM_UFlat/20 251158 252330 697.5MB/s gaviota -0.5% + Sum of all benchmarks 4966150 4980396 -0.3% + + + Sandy Bridge, Google GCC: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------ + BM_UFlat/0 42850 42182 2.3GB/s html +1.6% + BM_UFlat/1 525660 515816 1.3GB/s urls +1.9% + BM_UFlat/2 7173 7283 16.3GB/s jpg -1.5% + BM_UFlat/3 92 91 2.1GB/s jpg_200 +1.1% + BM_UFlat/4 15147 14872 5.9GB/s pdf +1.8% + BM_UFlat/5 199936 192116 2.0GB/s html4 +4.1% + BM_UFlat/6 12796 12443 1.8GB/s cp +2.8% + BM_UFlat/7 6588 6400 1.6GB/s c +2.9% + BM_UFlat/8 2010 1951 1.8GB/s lsp +3.0% + BM_UFlat/9 761124 763049 1.3GB/s xls -0.3% + BM_UFlat/10 186 189 1016.1MB/s xls_200 -1.6% + BM_UFlat/11 159354 158460 918.6MB/s txt1 +0.6% + BM_UFlat/12 139732 139950 856.1MB/s txt2 -0.2% + BM_UFlat/13 429917 425027 961.7MB/s txt3 +1.2% + BM_UFlat/14 585255 587324 785.8MB/s txt4 -0.4% + BM_UFlat/15 276186 266173 1.8GB/s bin +3.8% + BM_UFlat/16 205 207 925.5MB/s bin_200 -1.0% + BM_UFlat/17 24925 24935 1.4GB/s sum -0.0% + BM_UFlat/18 2632 2576 1.5GB/s man +2.2% + BM_UFlat/19 40546 39108 2.8GB/s pb +3.7% + BM_UFlat/20 175803 168209 1048.9MB/s gaviota +4.5% + Sum of all benchmarks 3408117 3368361 +1.2% + + + Haswell, upstream GCC 4.8.1: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------ + BM_UFlat/0 46308 40641 2.3GB/s html +13.9% + BM_UFlat/1 513385 514706 1.3GB/s urls -0.3% + BM_UFlat/2 6197 6151 19.2GB/s jpg +0.7% + BM_UFlat/3 61 61 3.0GB/s jpg_200 +0.0% + BM_UFlat/4 13551 13429 6.5GB/s pdf +0.9% + BM_UFlat/5 198317 190243 2.0GB/s html4 +4.2% + BM_UFlat/6 14768 12560 1.8GB/s cp +17.6% + BM_UFlat/7 6453 6447 1.6GB/s c +0.1% + BM_UFlat/8 1991 1980 1.8GB/s lsp +0.6% + BM_UFlat/9 766947 770424 1.2GB/s xls -0.5% + BM_UFlat/10 170 169 1.1GB/s xls_200 +0.6% + BM_UFlat/11 164350 163554 888.7MB/s txt1 +0.5% + BM_UFlat/12 145444 143830 832.1MB/s txt2 +1.1% + BM_UFlat/13 437849 438413 929.2MB/s txt3 -0.1% + BM_UFlat/14 603587 605309 759.8MB/s txt4 -0.3% + BM_UFlat/15 249799 248067 1.9GB/s bin +0.7% + BM_UFlat/16 191 188 1011.4MB/s bin_200 +1.6% + BM_UFlat/17 26064 24778 1.4GB/s sum +5.2% + BM_UFlat/18 2620 2601 1.5GB/s man +0.7% + BM_UFlat/19 44551 37373 3.0GB/s pb +19.2% + BM_UFlat/20 165408 164584 1.0GB/s gaviota +0.5% + Sum of all benchmarks 3408011 3385508 +0.7% + +------------------------------------------------------------------------ +r77 | snappy.mirrorbot@gmail.com | 2013-06-14 23:42:26 +0200 (Fri, 14 Jun 2013) | 92 lines + +Make the two IncrementalCopy* functions take in an ssize_t instead of a len, +in order to avoid having to do 32-to-64-bit signed conversions on a hot path +during decompression. (Also fixes some MSVC warnings, mentioned in public +issue 75, but more of those remain.) They cannot be size_t because we expect +them to go negative and test for that. + +This saves a few movzwl instructions, yielding ~2% speedup in decompression. + + +Sandy Bridge: + +Benchmark Base (ns) New (ns) Improvement +------------------------------------------------------------------------------------------------- +BM_UFlat/0 48009 41283 2.3GB/s html +16.3% +BM_UFlat/1 531274 513419 1.3GB/s urls +3.5% +BM_UFlat/2 7378 7062 16.8GB/s jpg +4.5% +BM_UFlat/3 92 92 2.0GB/s jpg_200 +0.0% +BM_UFlat/4 15057 14974 5.9GB/s pdf +0.6% +BM_UFlat/5 204323 193140 2.0GB/s html4 +5.8% +BM_UFlat/6 13282 12611 1.8GB/s cp +5.3% +BM_UFlat/7 6511 6504 1.6GB/s c +0.1% +BM_UFlat/8 2014 2030 1.7GB/s lsp -0.8% +BM_UFlat/9 775909 768336 1.3GB/s xls +1.0% +BM_UFlat/10 182 184 1043.2MB/s xls_200 -1.1% +BM_UFlat/11 167352 161630 901.2MB/s txt1 +3.5% +BM_UFlat/12 147393 142246 842.8MB/s txt2 +3.6% +BM_UFlat/13 449960 432853 944.4MB/s txt3 +4.0% +BM_UFlat/14 620497 594845 775.9MB/s txt4 +4.3% +BM_UFlat/15 265610 267356 1.8GB/s bin -0.7% +BM_UFlat/16 206 205 932.7MB/s bin_200 +0.5% +BM_UFlat/17 25561 24730 1.4GB/s sum +3.4% +BM_UFlat/18 2620 2644 1.5GB/s man -0.9% +BM_UFlat/19 45766 38589 2.9GB/s pb +18.6% +BM_UFlat/20 171107 169832 1039.5MB/s gaviota +0.8% +Sum of all benchmarks 3500103 3394565 +3.1% + + +Westmere: + +Benchmark Base (ns) New (ns) Improvement +------------------------------------------------------------------------------------------------- +BM_UFlat/0 72624 71526 1.3GB/s html +1.5% +BM_UFlat/1 735821 722917 930.8MB/s urls +1.8% +BM_UFlat/2 10450 10172 11.7GB/s jpg +2.7% +BM_UFlat/3 117 117 1.6GB/s jpg_200 +0.0% +BM_UFlat/4 29817 29648 3.0GB/s pdf +0.6% +BM_UFlat/5 297126 293073 1.3GB/s html4 +1.4% +BM_UFlat/6 28252 27994 842.0MB/s cp +0.9% +BM_UFlat/7 12672 12391 862.1MB/s c +2.3% +BM_UFlat/8 3507 3425 1040.9MB/s lsp +2.4% +BM_UFlat/9 1004268 969395 1018.0MB/s xls +3.6% +BM_UFlat/10 233 227 844.8MB/s xls_200 +2.6% +BM_UFlat/11 230054 224981 647.8MB/s txt1 +2.3% +BM_UFlat/12 201229 196447 610.5MB/s txt2 +2.4% +BM_UFlat/13 609547 596761 685.3MB/s txt3 +2.1% +BM_UFlat/14 824362 804821 573.8MB/s txt4 +2.4% +BM_UFlat/15 371095 374899 1.3GB/s bin -1.0% +BM_UFlat/16 267 267 717.8MB/s bin_200 +0.0% +BM_UFlat/17 44623 43828 835.9MB/s sum +1.8% +BM_UFlat/18 5077 4815 841.0MB/s man +5.4% +BM_UFlat/19 74964 73210 1.5GB/s pb +2.4% +BM_UFlat/20 237987 236745 746.0MB/s gaviota +0.5% +Sum of all benchmarks 4794092 4697659 +2.1% + + +Istanbul: + +Benchmark Base (ns) New (ns) Improvement +------------------------------------------------------------------------------------------------- +BM_UFlat/0 98614 96376 1020.4MB/s html +2.3% +BM_UFlat/1 963740 953241 707.2MB/s urls +1.1% +BM_UFlat/2 25042 24769 4.8GB/s jpg +1.1% +BM_UFlat/3 180 180 1065.6MB/s jpg_200 +0.0% +BM_UFlat/4 45942 45403 1.9GB/s pdf +1.2% +BM_UFlat/5 400135 390226 1008.2MB/s html4 +2.5% +BM_UFlat/6 37768 37392 631.9MB/s cp +1.0% +BM_UFlat/7 18585 18200 588.2MB/s c +2.1% +BM_UFlat/8 5751 5690 627.7MB/s lsp +1.1% +BM_UFlat/9 1543154 1542209 641.4MB/s xls +0.1% +BM_UFlat/10 381 388 494.6MB/s xls_200 -1.8% +BM_UFlat/11 339715 331973 440.1MB/s txt1 +2.3% +BM_UFlat/12 294807 289418 415.4MB/s txt2 +1.9% +BM_UFlat/13 906160 884094 463.3MB/s txt3 +2.5% +BM_UFlat/14 1224221 1198435 386.1MB/s txt4 +2.2% +BM_UFlat/15 516277 502923 979.5MB/s bin +2.7% +BM_UFlat/16 405 402 477.2MB/s bin_200 +0.7% +BM_UFlat/17 61640 60621 605.6MB/s sum +1.7% +BM_UFlat/18 7326 7383 549.5MB/s man -0.8% +BM_UFlat/19 94720 92653 1.2GB/s pb +2.2% +BM_UFlat/20 360435 346687 510.6MB/s gaviota +4.0% +Sum of all benchmarks 6944998 6828663 +1.7% + +------------------------------------------------------------------------ +r76 | snappy.mirrorbot@gmail.com | 2013-06-13 18:19:52 +0200 (Thu, 13 Jun 2013) | 9 lines + +Add support for uncompressing to iovecs (scatter I/O). +Windows does not have struct iovec defined anywhere, +so we define our own version that's equal to what UNIX +typically has. + +The bulk of this patch was contributed by Mohit Aron. + +R=jeff + +------------------------------------------------------------------------ +r75 | snappy.mirrorbot@gmail.com | 2013-06-12 21:51:15 +0200 (Wed, 12 Jun 2013) | 4 lines + +Some code reorganization needed for an internal change. + +R=fikes + +------------------------------------------------------------------------ +r74 | snappy.mirrorbot@gmail.com | 2013-04-09 17:33:30 +0200 (Tue, 09 Apr 2013) | 4 lines + +Supports truncated test data in zippy benchmark. + +R=sesse + +------------------------------------------------------------------------ +r73 | snappy.mirrorbot@gmail.com | 2013-02-05 15:36:15 +0100 (Tue, 05 Feb 2013) | 4 lines + +Release Snappy 1.1.0. + +R=sanjay + +------------------------------------------------------------------------ +r72 | snappy.mirrorbot@gmail.com | 2013-02-05 15:30:05 +0100 (Tue, 05 Feb 2013) | 9 lines + +Make ./snappy_unittest pass without "srcdir" being defined. + +Previously, snappy_unittests would read from an absolute path /testdata/..; +convert it to use a relative path instead. + +Patch from Marc-Antonie Ruel. + +R=maruel + +------------------------------------------------------------------------ +r71 | snappy.mirrorbot@gmail.com | 2013-01-18 13:16:36 +0100 (Fri, 18 Jan 2013) | 287 lines + +Increase the Zippy block size from 32 kB to 64 kB, winning ~3% density +while being effectively performance neutral. + +The longer story about density is that we win 3-6% density on the benchmarks +where this has any effect at all; many of the benchmarks (cp, c, lsp, man) +are smaller than 32 kB and thus will have no effect. Binary data also seems +to win little or nothing; of course, the already-compressed data wins nothing. +The protobuf benchmark wins as much as ~18% depending on architecture, +but I wouldn't be too sure that this is representative of protobuf data in +general. + +As of performance, we lose a tiny amount since we get more tags (e.g., a long +literal might be broken up into literal-copy-literal), but we win it back with +less clearing of the hash table, and more opportunities to skip incompressible +data (e.g. in the jpg benchmark). Decompression seems to get ever so slightly +slower, again due to more tags. The total net change is about as close to zero +as we can get, so the end effect seems to be simply more density and no +real performance change. + +The comment about not changing kBlockSize, scary as it is, is not really +relevant, since we're never going to have a block-level decompressor without +explicitly marked blocks. Replace it with something more appropriate. + +This affects the framing format, but it's okay to change it since it basically +has no users yet. + + +Density (note that cp, c, lsp and man are all smaller than 32 kB): + + Benchmark Description Base (%) New (%) Improvement + -------------------------------------------------------------- + ZFlat/0 html 22.57 22.31 +5.6% + ZFlat/1 urls 50.89 47.77 +6.5% + ZFlat/2 jpg 99.88 99.87 +0.0% + ZFlat/3 pdf 82.13 82.07 +0.1% + ZFlat/4 html4 23.55 22.51 +4.6% + ZFlat/5 cp 48.12 48.12 +0.0% + ZFlat/6 c 42.40 42.40 +0.0% + ZFlat/7 lsp 48.37 48.37 +0.0% + ZFlat/8 xls 41.34 41.23 +0.3% + ZFlat/9 txt1 59.81 57.87 +3.4% + ZFlat/10 txt2 64.07 61.93 +3.5% + ZFlat/11 txt3 57.11 54.92 +4.0% + ZFlat/12 txt4 68.35 66.22 +3.2% + ZFlat/13 bin 18.21 18.11 +0.6% + ZFlat/14 sum 51.88 48.96 +6.0% + ZFlat/15 man 59.36 59.36 +0.0% + ZFlat/16 pb 23.15 19.64 +17.9% + ZFlat/17 gaviota 38.27 37.72 +1.5% + Geometric mean 45.51 44.15 +3.1% + + +Microbenchmarks (64-bit, opt): + +Westmere 2.8 GHz: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------------------------- + BM_UFlat/0 75342 75027 1.3GB/s html +0.4% + BM_UFlat/1 723767 744269 899.6MB/s urls -2.8% + BM_UFlat/2 10072 10072 11.7GB/s jpg +0.0% + BM_UFlat/3 30747 30388 2.9GB/s pdf +1.2% + BM_UFlat/4 307353 306063 1.2GB/s html4 +0.4% + BM_UFlat/5 28593 28743 816.3MB/s cp -0.5% + BM_UFlat/6 12958 12998 818.1MB/s c -0.3% + BM_UFlat/7 3700 3792 935.8MB/s lsp -2.4% + BM_UFlat/8 999685 999905 982.1MB/s xls -0.0% + BM_UFlat/9 232954 230079 630.4MB/s txt1 +1.2% + BM_UFlat/10 200785 201468 592.6MB/s txt2 -0.3% + BM_UFlat/11 617267 610968 666.1MB/s txt3 +1.0% + BM_UFlat/12 821595 822475 558.7MB/s txt4 -0.1% + BM_UFlat/13 377097 377632 1.3GB/s bin -0.1% + BM_UFlat/14 45476 45260 805.8MB/s sum +0.5% + BM_UFlat/15 4985 5003 805.7MB/s man -0.4% + BM_UFlat/16 80813 77494 1.4GB/s pb +4.3% + BM_UFlat/17 251792 241553 727.7MB/s gaviota +4.2% + BM_UValidate/0 40343 40354 2.4GB/s html -0.0% + BM_UValidate/1 426890 451574 1.4GB/s urls -5.5% + BM_UValidate/2 187 179 661.9GB/s jpg +4.5% + BM_UValidate/3 13783 13827 6.4GB/s pdf -0.3% + BM_UValidate/4 162393 163335 2.3GB/s html4 -0.6% + BM_UDataBuffer/0 93756 93302 1046.7MB/s html +0.5% + BM_UDataBuffer/1 886714 916292 730.7MB/s urls -3.2% + BM_UDataBuffer/2 15861 16401 7.2GB/s jpg -3.3% + BM_UDataBuffer/3 38934 39224 2.2GB/s pdf -0.7% + BM_UDataBuffer/4 381008 379428 1029.5MB/s html4 +0.4% + BM_UCord/0 92528 91098 1072.0MB/s html +1.6% + BM_UCord/1 858421 885287 756.3MB/s urls -3.0% + BM_UCord/2 13140 13464 8.8GB/s jpg -2.4% + BM_UCord/3 39012 37773 2.3GB/s pdf +3.3% + BM_UCord/4 376869 371267 1052.1MB/s html4 +1.5% + BM_UCordString/0 75810 75303 1.3GB/s html +0.7% + BM_UCordString/1 735290 753841 888.2MB/s urls -2.5% + BM_UCordString/2 11945 13113 9.0GB/s jpg -8.9% + BM_UCordString/3 33901 32562 2.7GB/s pdf +4.1% + BM_UCordString/4 310985 309390 1.2GB/s html4 +0.5% + BM_UCordValidate/0 40952 40450 2.4GB/s html +1.2% + BM_UCordValidate/1 433842 456531 1.4GB/s urls -5.0% + BM_UCordValidate/2 1179 1173 100.8GB/s jpg +0.5% + BM_UCordValidate/3 14481 14392 6.1GB/s pdf +0.6% + BM_UCordValidate/4 164364 164151 2.3GB/s html4 +0.1% + BM_ZFlat/0 160610 156601 623.6MB/s html (22.31 %) +2.6% + BM_ZFlat/1 1995238 1993582 335.9MB/s urls (47.77 %) +0.1% + BM_ZFlat/2 30133 24983 4.7GB/s jpg (99.87 %) +20.6% + BM_ZFlat/3 74453 73128 1.2GB/s pdf (82.07 %) +1.8% + BM_ZFlat/4 647674 633729 616.4MB/s html4 (22.51 %) +2.2% + BM_ZFlat/5 76259 76090 308.4MB/s cp (48.12 %) +0.2% + BM_ZFlat/6 31106 31084 342.1MB/s c (42.40 %) +0.1% + BM_ZFlat/7 10507 10443 339.8MB/s lsp (48.37 %) +0.6% + BM_ZFlat/8 1811047 1793325 547.6MB/s xls (41.23 %) +1.0% + BM_ZFlat/9 597903 581793 249.3MB/s txt1 (57.87 %) +2.8% + BM_ZFlat/10 525320 514522 232.0MB/s txt2 (61.93 %) +2.1% + BM_ZFlat/11 1596591 1551636 262.3MB/s txt3 (54.92 %) +2.9% + BM_ZFlat/12 2134523 2094033 219.5MB/s txt4 (66.22 %) +1.9% + BM_ZFlat/13 593024 587869 832.6MB/s bin (18.11 %) +0.9% + BM_ZFlat/14 114746 110666 329.5MB/s sum (48.96 %) +3.7% + BM_ZFlat/15 14376 14485 278.3MB/s man (59.36 %) -0.8% + BM_ZFlat/16 167908 150070 753.6MB/s pb (19.64 %) +11.9% + BM_ZFlat/17 460228 442253 397.5MB/s gaviota (37.72 %) +4.1% + BM_ZCord/0 164896 160241 609.4MB/s html +2.9% + BM_ZCord/1 2070239 2043492 327.7MB/s urls +1.3% + BM_ZCord/2 54402 47002 2.5GB/s jpg +15.7% + BM_ZCord/3 85871 83832 1073.1MB/s pdf +2.4% + BM_ZCord/4 664078 648825 602.0MB/s html4 +2.4% + BM_ZDataBuffer/0 174874 172549 566.0MB/s html +1.3% + BM_ZDataBuffer/1 2134410 2139173 313.0MB/s urls -0.2% + BM_ZDataBuffer/2 71911 69551 1.7GB/s jpg +3.4% + BM_ZDataBuffer/3 98236 99727 902.1MB/s pdf -1.5% + BM_ZDataBuffer/4 710776 699104 558.8MB/s html4 +1.7% + Sum of all benchmarks 27358908 27200688 +0.6% + + +Sandy Bridge 2.6 GHz: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------------------------- + BM_UFlat/0 49356 49018 1.9GB/s html +0.7% + BM_UFlat/1 516764 531955 1.2GB/s urls -2.9% + BM_UFlat/2 6982 7304 16.2GB/s jpg -4.4% + BM_UFlat/3 15285 15598 5.6GB/s pdf -2.0% + BM_UFlat/4 206557 206669 1.8GB/s html4 -0.1% + BM_UFlat/5 13681 13567 1.7GB/s cp +0.8% + BM_UFlat/6 6571 6592 1.6GB/s c -0.3% + BM_UFlat/7 2008 1994 1.7GB/s lsp +0.7% + BM_UFlat/8 775700 773286 1.2GB/s xls +0.3% + BM_UFlat/9 165578 164480 881.8MB/s txt1 +0.7% + BM_UFlat/10 143707 144139 828.2MB/s txt2 -0.3% + BM_UFlat/11 443026 436281 932.8MB/s txt3 +1.5% + BM_UFlat/12 603129 595856 771.2MB/s txt4 +1.2% + BM_UFlat/13 271682 270450 1.8GB/s bin +0.5% + BM_UFlat/14 26200 25666 1.4GB/s sum +2.1% + BM_UFlat/15 2620 2608 1.5GB/s man +0.5% + BM_UFlat/16 48908 47756 2.3GB/s pb +2.4% + BM_UFlat/17 174638 170346 1031.9MB/s gaviota +2.5% + BM_UValidate/0 31922 31898 3.0GB/s html +0.1% + BM_UValidate/1 341265 363554 1.8GB/s urls -6.1% + BM_UValidate/2 160 151 782.8GB/s jpg +6.0% + BM_UValidate/3 10402 10380 8.5GB/s pdf +0.2% + BM_UValidate/4 129490 130587 2.9GB/s html4 -0.8% + BM_UDataBuffer/0 59383 58736 1.6GB/s html +1.1% + BM_UDataBuffer/1 619222 637786 1049.8MB/s urls -2.9% + BM_UDataBuffer/2 10775 11941 9.9GB/s jpg -9.8% + BM_UDataBuffer/3 18002 17930 4.9GB/s pdf +0.4% + BM_UDataBuffer/4 259182 259306 1.5GB/s html4 -0.0% + BM_UCord/0 59379 57814 1.6GB/s html +2.7% + BM_UCord/1 598456 615162 1088.4MB/s urls -2.7% + BM_UCord/2 8519 8628 13.7GB/s jpg -1.3% + BM_UCord/3 18123 17537 5.0GB/s pdf +3.3% + BM_UCord/4 252375 252331 1.5GB/s html4 +0.0% + BM_UCordString/0 49494 49790 1.9GB/s html -0.6% + BM_UCordString/1 524659 541803 1.2GB/s urls -3.2% + BM_UCordString/2 8206 8354 14.2GB/s jpg -1.8% + BM_UCordString/3 17235 16537 5.3GB/s pdf +4.2% + BM_UCordString/4 210188 211072 1.8GB/s html4 -0.4% + BM_UCordValidate/0 31956 31587 3.0GB/s html +1.2% + BM_UCordValidate/1 340828 362141 1.8GB/s urls -5.9% + BM_UCordValidate/2 783 744 158.9GB/s jpg +5.2% + BM_UCordValidate/3 10543 10462 8.4GB/s pdf +0.8% + BM_UCordValidate/4 130150 129789 2.9GB/s html4 +0.3% + BM_ZFlat/0 113873 111200 878.2MB/s html (22.31 %) +2.4% + BM_ZFlat/1 1473023 1489858 449.4MB/s urls (47.77 %) -1.1% + BM_ZFlat/2 23569 19486 6.1GB/s jpg (99.87 %) +21.0% + BM_ZFlat/3 49178 48046 1.8GB/s pdf (82.07 %) +2.4% + BM_ZFlat/4 475063 469394 832.2MB/s html4 (22.51 %) +1.2% + BM_ZFlat/5 46910 46816 501.2MB/s cp (48.12 %) +0.2% + BM_ZFlat/6 16883 16916 628.6MB/s c (42.40 %) -0.2% + BM_ZFlat/7 5381 5447 651.5MB/s lsp (48.37 %) -1.2% + BM_ZFlat/8 1466870 1473861 666.3MB/s xls (41.23 %) -0.5% + BM_ZFlat/9 468006 464101 312.5MB/s txt1 (57.87 %) +0.8% + BM_ZFlat/10 408157 408957 291.9MB/s txt2 (61.93 %) -0.2% + BM_ZFlat/11 1253348 1232910 330.1MB/s txt3 (54.92 %) +1.7% + BM_ZFlat/12 1702373 1702977 269.8MB/s txt4 (66.22 %) -0.0% + BM_ZFlat/13 439792 438557 1116.0MB/s bin (18.11 %) +0.3% + BM_ZFlat/14 80766 78851 462.5MB/s sum (48.96 %) +2.4% + BM_ZFlat/15 7420 7542 534.5MB/s man (59.36 %) -1.6% + BM_ZFlat/16 112043 100126 1.1GB/s pb (19.64 %) +11.9% + BM_ZFlat/17 368877 357703 491.4MB/s gaviota (37.72 %) +3.1% + BM_ZCord/0 116402 113564 859.9MB/s html +2.5% + BM_ZCord/1 1507156 1519911 440.5MB/s urls -0.8% + BM_ZCord/2 39860 33686 3.5GB/s jpg +18.3% + BM_ZCord/3 56211 54694 1.6GB/s pdf +2.8% + BM_ZCord/4 485594 479212 815.1MB/s html4 +1.3% + BM_ZDataBuffer/0 123185 121572 803.3MB/s html +1.3% + BM_ZDataBuffer/1 1569111 1589380 421.3MB/s urls -1.3% + BM_ZDataBuffer/2 53143 49556 2.4GB/s jpg +7.2% + BM_ZDataBuffer/3 65725 66826 1.3GB/s pdf -1.6% + BM_ZDataBuffer/4 517871 514750 758.9MB/s html4 +0.6% + Sum of all benchmarks 20258879 20315484 -0.3% + + +AMD Instanbul 2.4 GHz: + + Benchmark Base (ns) New (ns) Improvement + ------------------------------------------------------------------------------------------------- + BM_UFlat/0 97120 96585 1011.1MB/s html +0.6% + BM_UFlat/1 917473 948016 706.3MB/s urls -3.2% + BM_UFlat/2 21496 23938 4.9GB/s jpg -10.2% + BM_UFlat/3 44751 45639 1.9GB/s pdf -1.9% + BM_UFlat/4 391950 391413 998.0MB/s html4 +0.1% + BM_UFlat/5 37366 37201 630.7MB/s cp +0.4% + BM_UFlat/6 18350 18318 580.5MB/s c +0.2% + BM_UFlat/7 5672 5661 626.9MB/s lsp +0.2% + BM_UFlat/8 1533390 1529441 642.1MB/s xls +0.3% + BM_UFlat/9 335477 336553 431.0MB/s txt1 -0.3% + BM_UFlat/10 285140 292080 408.7MB/s txt2 -2.4% + BM_UFlat/11 888507 894758 454.9MB/s txt3 -0.7% + BM_UFlat/12 1187643 1210928 379.5MB/s txt4 -1.9% + BM_UFlat/13 493717 507447 964.5MB/s bin -2.7% + BM_UFlat/14 61740 60870 599.1MB/s sum +1.4% + BM_UFlat/15 7211 7187 560.9MB/s man +0.3% + BM_UFlat/16 97435 93100 1.2GB/s pb +4.7% + BM_UFlat/17 362662 356395 493.2MB/s gaviota +1.8% + BM_UValidate/0 47475 47118 2.0GB/s html +0.8% + BM_UValidate/1 501304 529741 1.2GB/s urls -5.4% + BM_UValidate/2 276 243 486.2GB/s jpg +13.6% + BM_UValidate/3 16361 16261 5.4GB/s pdf +0.6% + BM_UValidate/4 190741 190353 2.0GB/s html4 +0.2% + BM_UDataBuffer/0 111080 109771 889.6MB/s html +1.2% + BM_UDataBuffer/1 1051035 1085999 616.5MB/s urls -3.2% + BM_UDataBuffer/2 25801 25463 4.6GB/s jpg +1.3% + BM_UDataBuffer/3 50493 49946 1.8GB/s pdf +1.1% + BM_UDataBuffer/4 447258 444138 879.5MB/s html4 +0.7% + BM_UCord/0 109350 107909 905.0MB/s html +1.3% + BM_UCord/1 1023396 1054964 634.7MB/s urls -3.0% + BM_UCord/2 25292 24371 4.9GB/s jpg +3.8% + BM_UCord/3 48955 49736 1.8GB/s pdf -1.6% + BM_UCord/4 440452 437331 893.2MB/s html4 +0.7% + BM_UCordString/0 98511 98031 996.2MB/s html +0.5% + BM_UCordString/1 933230 963495 694.9MB/s urls -3.1% + BM_UCordString/2 23311 24076 4.9GB/s jpg -3.2% + BM_UCordString/3 45568 46196 1.9GB/s pdf -1.4% + BM_UCordString/4 397791 396934 984.1MB/s html4 +0.2% + BM_UCordValidate/0 47537 46921 2.0GB/s html +1.3% + BM_UCordValidate/1 505071 532716 1.2GB/s urls -5.2% + BM_UCordValidate/2 1663 1621 72.9GB/s jpg +2.6% + BM_UCordValidate/3 16890 16926 5.2GB/s pdf -0.2% + BM_UCordValidate/4 192365 191984 2.0GB/s html4 +0.2% + BM_ZFlat/0 184708 179103 545.3MB/s html (22.31 %) +3.1% + BM_ZFlat/1 2293864 2302950 290.7MB/s urls (47.77 %) -0.4% + BM_ZFlat/2 52852 47618 2.5GB/s jpg (99.87 %) +11.0% + BM_ZFlat/3 100766 96179 935.3MB/s pdf (82.07 %) +4.8% + BM_ZFlat/4 741220 727977 536.6MB/s html4 (22.51 %) +1.8% + BM_ZFlat/5 85402 85418 274.7MB/s cp (48.12 %) -0.0% + BM_ZFlat/6 36558 36494 291.4MB/s c (42.40 %) +0.2% + BM_ZFlat/7 12706 12507 283.7MB/s lsp (48.37 %) +1.6% + BM_ZFlat/8 2336823 2335688 420.5MB/s xls (41.23 %) +0.0% + BM_ZFlat/9 701804 681153 212.9MB/s txt1 (57.87 %) +3.0% + BM_ZFlat/10 606700 597194 199.9MB/s txt2 (61.93 %) +1.6% + BM_ZFlat/11 1852283 1803238 225.7MB/s txt3 (54.92 %) +2.7% + BM_ZFlat/12 2475527 2443354 188.1MB/s txt4 (66.22 %) +1.3% + BM_ZFlat/13 694497 696654 702.6MB/s bin (18.11 %) -0.3% + BM_ZFlat/14 136929 129855 280.8MB/s sum (48.96 %) +5.4% + BM_ZFlat/15 17172 17124 235.4MB/s man (59.36 %) +0.3% + BM_ZFlat/16 190364 171763 658.4MB/s pb (19.64 %) +10.8% + BM_ZFlat/17 567285 555190 316.6MB/s gaviota (37.72 %) +2.2% + BM_ZCord/0 193490 187031 522.1MB/s html +3.5% + BM_ZCord/1 2427537 2415315 277.2MB/s urls +0.5% + BM_ZCord/2 85378 81412 1.5GB/s jpg +4.9% + BM_ZCord/3 121898 119419 753.3MB/s pdf +2.1% + BM_ZCord/4 779564 762961 512.0MB/s html4 +2.2% + BM_ZDataBuffer/0 213820 207272 471.1MB/s html +3.2% + BM_ZDataBuffer/1 2589010 2586495 258.9MB/s urls +0.1% + BM_ZDataBuffer/2 121871 118885 1018.4MB/s jpg +2.5% + BM_ZDataBuffer/3 145382 145986 616.2MB/s pdf -0.4% + BM_ZDataBuffer/4 868117 852754 458.1MB/s html4 +1.8% + Sum of all benchmarks 33771833 33744763 +0.1% + +------------------------------------------------------------------------ +r70 | snappy.mirrorbot@gmail.com | 2013-01-06 20:21:26 +0100 (Sun, 06 Jan 2013) | 6 lines + +Adjust the Snappy open-source distribution for the changes in Google's +internal file API. + +R=sanjay + + +------------------------------------------------------------------------ +r69 | snappy.mirrorbot@gmail.com | 2013-01-04 12:54:20 +0100 (Fri, 04 Jan 2013) | 15 lines + +Change a few ORs to additions where they don't matter. This helps the compiler +use the LEA instruction more efficiently, since e.g. a + (b << 2) can be encoded +as one instruction. Even more importantly, it can constant-fold the +COPY_* enums together with the shifted negative constants, which also saves +some instructions. (We don't need it for LITERAL, since it happens to be 0.) + +I am unsure why the compiler couldn't do this itself, but the theory is that +it cannot prove that len-1 and len-4 cannot underflow/wrap, and thus can't +do the optimization safely. + +The gains are small but measurable; 0.5-1.0% over the BM_Z* benchmarks +(measured on Westmere, Sandy Bridge and Istanbul). + +R=sanjay + +------------------------------------------------------------------------ +r68 | snappy.mirrorbot@gmail.com | 2012-10-08 13:37:16 +0200 (Mon, 08 Oct 2012) | 5 lines + +Stop giving -Werror to automake, due to an incompatibility between current +versions of libtool and automake on non-GNU platforms (e.g. Mac OS X). + +R=sanjay + +------------------------------------------------------------------------ +r67 | snappy.mirrorbot@gmail.com | 2012-08-17 15:54:47 +0200 (Fri, 17 Aug 2012) | 5 lines + +Fix public issue 66: Document GetUncompressedLength better, in particular that +it leaves the source in a state that's not appropriate for RawUncompress. + +R=sanjay + +------------------------------------------------------------------------ +r66 | snappy.mirrorbot@gmail.com | 2012-07-31 13:44:44 +0200 (Tue, 31 Jul 2012) | 5 lines + +Fix public issue 64: Check for <sys/time.h> at configure time, +since MSVC seemingly does not have it. + +R=sanjay + +------------------------------------------------------------------------ +r65 | snappy.mirrorbot@gmail.com | 2012-07-04 11:34:48 +0200 (Wed, 04 Jul 2012) | 10 lines + +Handle the case where gettimeofday() goes backwards or returns the same value +twice; it could cause division by zero in the unit test framework. +(We already had one fix for this in place, but it was incomplete.) + +This could in theory happen on any system, since there are few guarantees +about gettimeofday(), but seems to only happen in practice on GNU/Hurd, where +gettimeofday() is cached and only updated ever so often. + +R=sanjay + +------------------------------------------------------------------------ +r64 | snappy.mirrorbot@gmail.com | 2012-07-04 11:28:33 +0200 (Wed, 04 Jul 2012) | 6 lines + +Mark ARMv4 as not supporting unaligned accesses (not just ARMv5 and ARMv6); +apparently Debian still targets these by default, giving us segfaults on +armel. + +R=sanjay + +------------------------------------------------------------------------ +r63 | snappy.mirrorbot@gmail.com | 2012-05-22 11:46:05 +0200 (Tue, 22 May 2012) | 5 lines + +Fix public bug #62: Remove an extraneous comma at the end of an enum list, +causing compile errors when embedded in Mozilla on OpenBSD. + +R=sanjay + +------------------------------------------------------------------------ +r62 | snappy.mirrorbot@gmail.com | 2012-05-22 11:32:50 +0200 (Tue, 22 May 2012) | 8 lines + +Snappy library no longer depends on iostream. + +Achieved by moving logging macro definitions to a test-only +header file, and by changing non-test code to use assert, +fprintf, and abort instead of LOG/CHECK macros. + +R=sesse + +------------------------------------------------------------------------ +r61 | snappy.mirrorbot@gmail.com | 2012-02-24 16:46:37 +0100 (Fri, 24 Feb 2012) | 4 lines + +Release Snappy 1.0.5. + +R=sanjay + +------------------------------------------------------------------------ +r60 | snappy.mirrorbot@gmail.com | 2012-02-23 18:00:36 +0100 (Thu, 23 Feb 2012) | 57 lines + +For 32-bit platforms, do not try to accelerate multiple neighboring +32-bit loads with a 64-bit load during compression (it's not a win). + +The main target for this optimization is ARM, but 32-bit x86 gets +a small gain, too, although there is noise in the microbenchmarks. +It's a no-op for 64-bit x86. It does not affect decompression. + +Microbenchmark results on a Cortex-A9 1GHz, using g++ 4.6.2 (from +Ubuntu/Linaro), -O2 -DNDEBUG -Wa,-march=armv7a -mtune=cortex-a9 +-mthumb-interwork, minimum 1000 iterations: + + Benchmark Time(ns) CPU(ns) Iterations + --------------------------------------------------- + BM_ZFlat/0 1158277 1160000 1000 84.2MB/s html (23.57 %) [ +4.3%] + BM_ZFlat/1 14861782 14860000 1000 45.1MB/s urls (50.89 %) [ +1.1%] + BM_ZFlat/2 393595 390000 1000 310.5MB/s jpg (99.88 %) [ +0.0%] + BM_ZFlat/3 650583 650000 1000 138.4MB/s pdf (82.13 %) [ +3.1%] + BM_ZFlat/4 4661480 4660000 1000 83.8MB/s html4 (23.55 %) [ +4.3%] + BM_ZFlat/5 491973 490000 1000 47.9MB/s cp (48.12 %) [ +2.0%] + BM_ZFlat/6 193575 192678 1038 55.2MB/s c (42.40 %) [ +9.0%] + BM_ZFlat/7 62343 62754 3187 56.5MB/s lsp (48.37 %) [ +2.6%] + BM_ZFlat/8 17708468 17710000 1000 55.5MB/s xls (41.34 %) [ -0.3%] + BM_ZFlat/9 3755345 3760000 1000 38.6MB/s txt1 (59.81 %) [ +8.2%] + BM_ZFlat/10 3324217 3320000 1000 36.0MB/s txt2 (64.07 %) [ +4.2%] + BM_ZFlat/11 10139932 10140000 1000 40.1MB/s txt3 (57.11 %) [ +6.4%] + BM_ZFlat/12 13532109 13530000 1000 34.0MB/s txt4 (68.35 %) [ +5.0%] + BM_ZFlat/13 4690847 4690000 1000 104.4MB/s bin (18.21 %) [ +4.1%] + BM_ZFlat/14 830682 830000 1000 43.9MB/s sum (51.88 %) [ +1.2%] + BM_ZFlat/15 84784 85011 2235 47.4MB/s man (59.36 %) [ +1.1%] + BM_ZFlat/16 1293254 1290000 1000 87.7MB/s pb (23.15 %) [ +2.3%] + BM_ZFlat/17 2775155 2780000 1000 63.2MB/s gaviota (38.27 %) [+12.2%] + +Core i7 in 32-bit mode (only one run and 100 iterations, though, so noisy): + + Benchmark Time(ns) CPU(ns) Iterations + --------------------------------------------------- + BM_ZFlat/0 227582 223464 3043 437.0MB/s html (23.57 %) [ +7.4%] + BM_ZFlat/1 2982430 2918455 233 229.4MB/s urls (50.89 %) [ +2.9%] + BM_ZFlat/2 46967 46658 15217 2.5GB/s jpg (99.88 %) [ +0.0%] + BM_ZFlat/3 115298 114864 5833 783.2MB/s pdf (82.13 %) [ +1.5%] + BM_ZFlat/4 913440 899743 778 434.2MB/s html4 (23.55 %) [ +0.3%] + BM_ZFlat/5 110302 108571 7000 216.1MB/s cp (48.12 %) [ +0.0%] + BM_ZFlat/6 44409 43372 15909 245.2MB/s c (42.40 %) [ +0.8%] + BM_ZFlat/7 15713 15643 46667 226.9MB/s lsp (48.37 %) [ +2.7%] + BM_ZFlat/8 2625539 2602230 269 377.4MB/s xls (41.34 %) [ +1.4%] + BM_ZFlat/9 808884 811429 875 178.8MB/s txt1 (59.81 %) [ -3.9%] + BM_ZFlat/10 709532 700000 1000 170.5MB/s txt2 (64.07 %) [ +0.0%] + BM_ZFlat/11 2177682 2162162 333 188.2MB/s txt3 (57.11 %) [ -1.4%] + BM_ZFlat/12 2849640 2840000 250 161.8MB/s txt4 (68.35 %) [ -1.4%] + BM_ZFlat/13 849760 835476 778 585.8MB/s bin (18.21 %) [ +1.2%] + BM_ZFlat/14 165940 164571 4375 221.6MB/s sum (51.88 %) [ +1.4%] + BM_ZFlat/15 20939 20571 35000 196.0MB/s man (59.36 %) [ +2.1%] + BM_ZFlat/16 239209 236544 2917 478.1MB/s pb (23.15 %) [ +4.2%] + BM_ZFlat/17 616206 610000 1000 288.2MB/s gaviota (38.27 %) [ -1.6%] + +R=sanjay + +------------------------------------------------------------------------ +r59 | snappy.mirrorbot@gmail.com | 2012-02-21 18:02:17 +0100 (Tue, 21 Feb 2012) | 107 lines + +Enable the use of unaligned loads and stores for ARM-based architectures +where they are available (ARMv7 and higher). This gives a significant +speed boost on ARM, both for compression and decompression. +It should not affect x86 at all. + +There are more changes possible to speed up ARM, but it might not be +that easy to do without hurting x86 or making the code uglier. +Also, we de not try to use NEON yet. + +Microbenchmark results on a Cortex-A9 1GHz, using g++ 4.6.2 (from Ubuntu/Linaro), +-O2 -DNDEBUG -Wa,-march=armv7a -mtune=cortex-a9 -mthumb-interwork: + +Benchmark Time(ns) CPU(ns) Iterations +--------------------------------------------------- +BM_UFlat/0 524806 529100 378 184.6MB/s html [+33.6%] +BM_UFlat/1 5139790 5200000 100 128.8MB/s urls [+28.8%] +BM_UFlat/2 86540 84166 1901 1.4GB/s jpg [ +0.6%] +BM_UFlat/3 215351 210176 904 428.0MB/s pdf [+29.8%] +BM_UFlat/4 2144490 2100000 100 186.0MB/s html4 [+33.3%] +BM_UFlat/5 194482 190000 1000 123.5MB/s cp [+36.2%] +BM_UFlat/6 91843 90175 2107 117.9MB/s c [+38.6%] +BM_UFlat/7 28535 28426 6684 124.8MB/s lsp [+34.7%] +BM_UFlat/8 9206600 9200000 100 106.7MB/s xls [+42.4%] +BM_UFlat/9 1865273 1886792 106 76.9MB/s txt1 [+32.5%] +BM_UFlat/10 1576809 1587301 126 75.2MB/s txt2 [+32.3%] +BM_UFlat/11 4968450 4900000 100 83.1MB/s txt3 [+32.7%] +BM_UFlat/12 6673970 6700000 100 68.6MB/s txt4 [+32.8%] +BM_UFlat/13 2391470 2400000 100 203.9MB/s bin [+29.2%] +BM_UFlat/14 334601 344827 522 105.8MB/s sum [+30.6%] +BM_UFlat/15 37404 38080 5252 105.9MB/s man [+33.8%] +BM_UFlat/16 535470 540540 370 209.2MB/s pb [+31.2%] +BM_UFlat/17 1875245 1886792 106 93.2MB/s gaviota [+37.8%] +BM_UValidate/0 178425 179533 1114 543.9MB/s html [ +2.7%] +BM_UValidate/1 2100450 2000000 100 334.8MB/s urls [ +5.0%] +BM_UValidate/2 1039 1044 172413 113.3GB/s jpg [ +3.4%] +BM_UValidate/3 59423 59470 3363 1.5GB/s pdf [ +7.8%] +BM_UValidate/4 760716 766283 261 509.8MB/s html4 [ +6.5%] +BM_ZFlat/0 1204632 1204819 166 81.1MB/s html (23.57 %) [+32.8%] +BM_ZFlat/1 15656190 15600000 100 42.9MB/s urls (50.89 %) [+27.6%] +BM_ZFlat/2 403336 410677 487 294.8MB/s jpg (99.88 %) [+16.5%] +BM_ZFlat/3 664073 671140 298 134.0MB/s pdf (82.13 %) [+28.4%] +BM_ZFlat/4 4961940 4900000 100 79.7MB/s html4 (23.55 %) [+30.6%] +BM_ZFlat/5 500664 501253 399 46.8MB/s cp (48.12 %) [+33.4%] +BM_ZFlat/6 217276 215982 926 49.2MB/s c (42.40 %) [+25.0%] +BM_ZFlat/7 64122 65487 3054 54.2MB/s lsp (48.37 %) [+36.1%] +BM_ZFlat/8 18045730 18000000 100 54.6MB/s xls (41.34 %) [+34.4%] +BM_ZFlat/9 4051530 4000000 100 36.3MB/s txt1 (59.81 %) [+25.0%] +BM_ZFlat/10 3451800 3500000 100 34.1MB/s txt2 (64.07 %) [+25.7%] +BM_ZFlat/11 11052340 11100000 100 36.7MB/s txt3 (57.11 %) [+24.3%] +BM_ZFlat/12 14538690 14600000 100 31.5MB/s txt4 (68.35 %) [+24.7%] +BM_ZFlat/13 5041850 5000000 100 97.9MB/s bin (18.21 %) [+32.0%] +BM_ZFlat/14 908840 909090 220 40.1MB/s sum (51.88 %) [+22.2%] +BM_ZFlat/15 86921 86206 1972 46.8MB/s man (59.36 %) [+42.2%] +BM_ZFlat/16 1312315 1315789 152 86.0MB/s pb (23.15 %) [+34.5%] +BM_ZFlat/17 3173120 3200000 100 54.9MB/s gaviota (38.27%) [+28.1%] + + +The move from 64-bit to 32-bit operations for the copies also affected 32-bit x86; +positive on the decompression side, and slightly negative on the compression side +(unless that is noise; I only ran once): + +Benchmark Time(ns) CPU(ns) Iterations +----------------------------------------------------- +BM_UFlat/0 86279 86140 7778 1.1GB/s html [ +7.5%] +BM_UFlat/1 839265 822622 778 813.9MB/s urls [ +9.4%] +BM_UFlat/2 9180 9143 87500 12.9GB/s jpg [ +1.2%] +BM_UFlat/3 35080 35000 20000 2.5GB/s pdf [+10.1%] +BM_UFlat/4 350318 345000 2000 1.1GB/s html4 [ +7.0%] +BM_UFlat/5 33808 33472 21212 701.0MB/s cp [ +9.0%] +BM_UFlat/6 15201 15214 46667 698.9MB/s c [+14.9%] +BM_UFlat/7 4652 4651 159091 762.9MB/s lsp [ +7.5%] +BM_UFlat/8 1285551 1282528 538 765.7MB/s xls [+10.7%] +BM_UFlat/9 282510 281690 2414 514.9MB/s txt1 [+13.6%] +BM_UFlat/10 243494 239286 2800 498.9MB/s txt2 [+14.4%] +BM_UFlat/11 743625 740000 1000 550.0MB/s txt3 [+14.3%] +BM_UFlat/12 999441 989717 778 464.3MB/s txt4 [+16.1%] +BM_UFlat/13 412402 410076 1707 1.2GB/s bin [ +7.3%] +BM_UFlat/14 54876 54000 10000 675.3MB/s sum [+13.0%] +BM_UFlat/15 6146 6100 100000 660.8MB/s man [+14.8%] +BM_UFlat/16 90496 90286 8750 1.2GB/s pb [ +4.0%] +BM_UFlat/17 292650 292000 2500 602.0MB/s gaviota [+18.1%] +BM_UValidate/0 49620 49699 14286 1.9GB/s html [ +0.0%] +BM_UValidate/1 501371 500000 1000 1.3GB/s urls [ +0.0%] +BM_UValidate/2 232 227 3043478 521.5GB/s jpg [ +1.3%] +BM_UValidate/3 17250 17143 43750 5.1GB/s pdf [ -1.3%] +BM_UValidate/4 198643 200000 3500 1.9GB/s html4 [ -0.9%] +BM_ZFlat/0 227128 229415 3182 425.7MB/s html (23.57 %) [ -1.4%] +BM_ZFlat/1 2970089 2960000 250 226.2MB/s urls (50.89 %) [ -1.9%] +BM_ZFlat/2 45683 44999 15556 2.6GB/s jpg (99.88 %) [ +2.2%] +BM_ZFlat/3 114661 113136 6364 795.1MB/s pdf (82.13 %) [ -1.5%] +BM_ZFlat/4 919702 914286 875 427.2MB/s html4 (23.55%) [ -1.3%] +BM_ZFlat/5 108189 108422 6364 216.4MB/s cp (48.12 %) [ -1.2%] +BM_ZFlat/6 44525 44000 15909 241.7MB/s c (42.40 %) [ -2.9%] +BM_ZFlat/7 15973 15857 46667 223.8MB/s lsp (48.37 %) [ +0.0%] +BM_ZFlat/8 2677888 2639405 269 372.1MB/s xls (41.34 %) [ -1.4%] +BM_ZFlat/9 800715 780000 1000 186.0MB/s txt1 (59.81 %) [ -0.4%] +BM_ZFlat/10 700089 700000 1000 170.5MB/s txt2 (64.07 %) [ -2.9%] +BM_ZFlat/11 2159356 2138365 318 190.3MB/s txt3 (57.11 %) [ -0.3%] +BM_ZFlat/12 2796143 2779923 259 165.3MB/s txt4 (68.35 %) [ -1.4%] +BM_ZFlat/13 856458 835476 778 585.8MB/s bin (18.21 %) [ -0.1%] +BM_ZFlat/14 166908 166857 4375 218.6MB/s sum (51.88 %) [ -1.4%] +BM_ZFlat/15 21181 20857 35000 193.3MB/s man (59.36 %) [ -0.8%] +BM_ZFlat/16 244009 239973 2917 471.3MB/s pb (23.15 %) [ -1.4%] +BM_ZFlat/17 596362 590000 1000 297.9MB/s gaviota (38.27%) [ +0.0%] + +R=sanjay + +------------------------------------------------------------------------ +r58 | snappy.mirrorbot@gmail.com | 2012-02-11 23:11:22 +0100 (Sat, 11 Feb 2012) | 9 lines + +Lower the size allocated in the "corrupted input" unit test from 256 MB +to 2 MB. This fixes issues with running the unit test on platforms with +little RAM (e.g. some ARM boards). + +Also, reactivate the 2 MB test for 64-bit platforms; there's no good +reason why it shouldn't be. + +R=sanjay + +------------------------------------------------------------------------ +r57 | snappy.mirrorbot@gmail.com | 2012-01-08 18:55:48 +0100 (Sun, 08 Jan 2012) | 2 lines + +Minor refactoring to accomodate changes in Google's internal code tree. + +------------------------------------------------------------------------ +r56 | snappy.mirrorbot@gmail.com | 2012-01-04 14:10:46 +0100 (Wed, 04 Jan 2012) | 19 lines + +Fix public issue r57: Fix most warnings with -Wall, mostly signed/unsigned +warnings. There are still some in the unit test, but the main .cc file should +be clean. We haven't enabled -Wall for the default build, since the unit test +is still not clean. + +This also fixes a real bug in the open-source implementation of +ReadFileToStringOrDie(); it would not detect errors correctly. + +I had to go through some pains to avoid performance loss as the types +were changed; I think there might still be some with 32-bit if and only if LFS +is enabled (ie., size_t is 64-bit), but for regular 32-bit and 64-bit I can't +see any losses, and I've diffed the generated GCC assembler between the old and +new code without seeing any significant choices. If anything, it's ever so +slightly faster. + +This may or may not enable compression of very large blocks (>2^32 bytes) +when size_t is 64-bit, but I haven't checked, and it is still not a supported +case. + +------------------------------------------------------------------------ +r55 | snappy.mirrorbot@gmail.com | 2012-01-04 11:46:39 +0100 (Wed, 04 Jan 2012) | 6 lines + +Add a framing format description. We do not have any implementation of this at +the current point, but there seems to be enough of a general interest in the +topic (cf. public bug #34). + +R=csilvers,sanjay + +------------------------------------------------------------------------ +r54 | snappy.mirrorbot@gmail.com | 2011-12-05 22:27:26 +0100 (Mon, 05 Dec 2011) | 81 lines + +Speed up decompression by moving the refill check to the end of the loop. + +This seems to work because in most of the branches, the compiler can evaluate +“ip_limit_ - ip” in a more efficient way than reloading ip_limit_ from memory +(either by already having the entire expression in a register, or reconstructing +it from “avail”, or something else). Memory loads, even from L1, are seemingly +costly in the big picture at the current decompression speeds. + +Microbenchmarks (64-bit, opt mode): + +Westmere (Intel Core i7): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 74492 74491 187894 1.3GB/s html [ +5.9%] + BM_UFlat/1 712268 712263 19644 940.0MB/s urls [ +3.8%] + BM_UFlat/2 10591 10590 1000000 11.2GB/s jpg [ -6.8%] + BM_UFlat/3 29643 29643 469915 3.0GB/s pdf [ +7.9%] + BM_UFlat/4 304669 304667 45930 1.3GB/s html4 [ +4.8%] + BM_UFlat/5 28508 28507 490077 823.1MB/s cp [ +4.0%] + BM_UFlat/6 12415 12415 1000000 856.5MB/s c [ +8.6%] + BM_UFlat/7 3415 3415 4084723 1039.0MB/s lsp [+18.0%] + BM_UFlat/8 979569 979563 14261 1002.5MB/s xls [ +5.8%] + BM_UFlat/9 230150 230148 60934 630.2MB/s txt1 [ +5.2%] + BM_UFlat/10 197167 197166 71135 605.5MB/s txt2 [ +4.7%] + BM_UFlat/11 607394 607390 23041 670.1MB/s txt3 [ +5.6%] + BM_UFlat/12 808502 808496 17316 568.4MB/s txt4 [ +5.0%] + BM_UFlat/13 372791 372788 37564 1.3GB/s bin [ +3.3%] + BM_UFlat/14 44541 44541 313969 818.8MB/s sum [ +5.7%] + BM_UFlat/15 4833 4833 2898697 834.1MB/s man [ +4.8%] + BM_UFlat/16 79855 79855 175356 1.4GB/s pb [ +4.8%] + BM_UFlat/17 245845 245843 56838 715.0MB/s gaviota [ +5.8%] + +Clovertown (Intel Core 2): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 107911 107890 100000 905.1MB/s html [ +2.2%] + BM_UFlat/1 1011237 1011041 10000 662.3MB/s urls [ +2.5%] + BM_UFlat/2 26775 26770 523089 4.4GB/s jpg [ +0.0%] + BM_UFlat/3 48103 48095 290618 1.8GB/s pdf [ +3.4%] + BM_UFlat/4 437724 437644 31937 892.6MB/s html4 [ +2.1%] + BM_UFlat/5 39607 39600 358284 592.5MB/s cp [ +2.4%] + BM_UFlat/6 18227 18224 768191 583.5MB/s c [ +2.7%] + BM_UFlat/7 5171 5170 2709437 686.4MB/s lsp [ +3.9%] + BM_UFlat/8 1560291 1559989 8970 629.5MB/s xls [ +3.6%] + BM_UFlat/9 335401 335343 41731 432.5MB/s txt1 [ +3.0%] + BM_UFlat/10 287014 286963 48758 416.0MB/s txt2 [ +2.8%] + BM_UFlat/11 888522 888356 15752 458.1MB/s txt3 [ +2.9%] + BM_UFlat/12 1186600 1186378 10000 387.3MB/s txt4 [ +3.1%] + BM_UFlat/13 572295 572188 24468 855.4MB/s bin [ +2.1%] + BM_UFlat/14 64060 64049 218401 569.4MB/s sum [ +4.1%] + BM_UFlat/15 7264 7263 1916168 555.0MB/s man [ +1.4%] + BM_UFlat/16 108853 108836 100000 1039.1MB/s pb [ +1.7%] + BM_UFlat/17 364289 364223 38419 482.6MB/s gaviota [ +4.9%] + +Barcelona (AMD Opteron): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 103900 103871 100000 940.2MB/s html [ +8.3%] + BM_UFlat/1 1000435 1000107 10000 669.5MB/s urls [ +6.6%] + BM_UFlat/2 24659 24652 567362 4.8GB/s jpg [ +0.1%] + BM_UFlat/3 48206 48193 291121 1.8GB/s pdf [ +5.0%] + BM_UFlat/4 421980 421850 33174 926.0MB/s html4 [ +7.3%] + BM_UFlat/5 40368 40357 346994 581.4MB/s cp [ +8.7%] + BM_UFlat/6 19836 19830 708695 536.2MB/s c [ +8.0%] + BM_UFlat/7 6100 6098 2292774 581.9MB/s lsp [ +9.0%] + BM_UFlat/8 1693093 1692514 8261 580.2MB/s xls [ +8.0%] + BM_UFlat/9 365991 365886 38225 396.4MB/s txt1 [ +7.1%] + BM_UFlat/10 311330 311238 44950 383.6MB/s txt2 [ +7.6%] + BM_UFlat/11 975037 974737 14376 417.5MB/s txt3 [ +6.9%] + BM_UFlat/12 1303558 1303175 10000 352.6MB/s txt4 [ +7.3%] + BM_UFlat/13 517448 517290 27144 946.2MB/s bin [ +5.5%] + BM_UFlat/14 66537 66518 210352 548.3MB/s sum [ +7.5%] + BM_UFlat/15 7976 7974 1760383 505.6MB/s man [ +5.6%] + BM_UFlat/16 103121 103092 100000 1097.0MB/s pb [ +8.7%] + BM_UFlat/17 391431 391314 35733 449.2MB/s gaviota [ +6.5%] + +R=sanjay + +------------------------------------------------------------------------ +r53 | snappy.mirrorbot@gmail.com | 2011-11-23 12:14:17 +0100 (Wed, 23 Nov 2011) | 88 lines + +Speed up decompression by making the fast path for literals faster. + +We do the fast-path step as soon as possible; in fact, as soon as we know the +literal length. Since we usually hit the fast path, we can then skip the checks +for long literals and available input space (beyond what the fast path check +already does). + +Note that this changes the decompression Writer API; however, it does not +change the ABI, since writers are always templatized and as such never +cross compilation units. The new API is slightly more general, in that it +doesn't hard-code the value 16. Note that we also take care to check +for len <= 16 first, since the other two checks almost always succeed +(so we don't want to waste time checking for them until we have to). + +The improvements are most marked on Nehalem, but are generally positive +on other platforms as well. All microbenchmarks are 64-bit, opt. + +Clovertown (Core 2): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 110226 110224 100000 886.0MB/s html [ +1.5%] + BM_UFlat/1 1036523 1036508 10000 646.0MB/s urls [ -0.8%] + BM_UFlat/2 26775 26775 522570 4.4GB/s jpg [ +0.0%] + BM_UFlat/3 49738 49737 280974 1.8GB/s pdf [ +0.3%] + BM_UFlat/4 446790 446792 31334 874.3MB/s html4 [ +0.8%] + BM_UFlat/5 40561 40562 350424 578.5MB/s cp [ +1.3%] + BM_UFlat/6 18722 18722 746903 568.0MB/s c [ +1.4%] + BM_UFlat/7 5373 5373 2608632 660.5MB/s lsp [ +8.3%] + BM_UFlat/8 1615716 1615718 8670 607.8MB/s xls [ +2.0%] + BM_UFlat/9 345278 345281 40481 420.1MB/s txt1 [ +1.4%] + BM_UFlat/10 294855 294855 47452 404.9MB/s txt2 [ +1.6%] + BM_UFlat/11 914263 914263 15316 445.2MB/s txt3 [ +1.1%] + BM_UFlat/12 1222694 1222691 10000 375.8MB/s txt4 [ +1.4%] + BM_UFlat/13 584495 584489 23954 837.4MB/s bin [ -0.6%] + BM_UFlat/14 66662 66662 210123 547.1MB/s sum [ +1.2%] + BM_UFlat/15 7368 7368 1881856 547.1MB/s man [ +4.0%] + BM_UFlat/16 110727 110726 100000 1021.4MB/s pb [ +2.3%] + BM_UFlat/17 382138 382141 36616 460.0MB/s gaviota [ -0.7%] + +Westmere (Core i7): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 78861 78853 177703 1.2GB/s html [ +2.1%] + BM_UFlat/1 739560 739491 18912 905.4MB/s urls [ +3.4%] + BM_UFlat/2 9867 9866 1419014 12.0GB/s jpg [ +3.4%] + BM_UFlat/3 31989 31986 438385 2.7GB/s pdf [ +0.2%] + BM_UFlat/4 319406 319380 43771 1.2GB/s html4 [ +1.9%] + BM_UFlat/5 29639 29636 472862 791.7MB/s cp [ +5.2%] + BM_UFlat/6 13478 13477 1000000 789.0MB/s c [ +2.3%] + BM_UFlat/7 4030 4029 3475364 880.7MB/s lsp [ +8.7%] + BM_UFlat/8 1036585 1036492 10000 947.5MB/s xls [ +6.9%] + BM_UFlat/9 242127 242105 57838 599.1MB/s txt1 [ +3.0%] + BM_UFlat/10 206499 206480 67595 578.2MB/s txt2 [ +3.4%] + BM_UFlat/11 641635 641570 21811 634.4MB/s txt3 [ +2.4%] + BM_UFlat/12 848847 848769 16443 541.4MB/s txt4 [ +3.1%] + BM_UFlat/13 384968 384938 36366 1.2GB/s bin [ +0.3%] + BM_UFlat/14 47106 47101 297770 774.3MB/s sum [ +4.4%] + BM_UFlat/15 5063 5063 2772202 796.2MB/s man [ +7.7%] + BM_UFlat/16 83663 83656 167697 1.3GB/s pb [ +1.8%] + BM_UFlat/17 260224 260198 53823 675.6MB/s gaviota [ -0.5%] + +Barcelona (Opteron): + + Benchmark Time(ns) CPU(ns) Iterations + -------------------------------------------- + BM_UFlat/0 112490 112457 100000 868.4MB/s html [ -0.4%] + BM_UFlat/1 1066719 1066339 10000 627.9MB/s urls [ +1.0%] + BM_UFlat/2 24679 24672 563802 4.8GB/s jpg [ +0.7%] + BM_UFlat/3 50603 50589 277285 1.7GB/s pdf [ +2.6%] + BM_UFlat/4 452982 452849 30900 862.6MB/s html4 [ -0.2%] + BM_UFlat/5 43860 43848 319554 535.1MB/s cp [ +1.2%] + BM_UFlat/6 21419 21413 653573 496.6MB/s c [ +1.0%] + BM_UFlat/7 6646 6645 2105405 534.1MB/s lsp [ +0.3%] + BM_UFlat/8 1828487 1827886 7658 537.3MB/s xls [ +2.6%] + BM_UFlat/9 391824 391714 35708 370.3MB/s txt1 [ +2.2%] + BM_UFlat/10 334913 334816 41885 356.6MB/s txt2 [ +1.7%] + BM_UFlat/11 1042062 1041674 10000 390.7MB/s txt3 [ +1.1%] + BM_UFlat/12 1398902 1398456 10000 328.6MB/s txt4 [ +1.7%] + BM_UFlat/13 545706 545530 25669 897.2MB/s bin [ -0.4%] + BM_UFlat/14 71512 71505 196035 510.0MB/s sum [ +1.4%] + BM_UFlat/15 8422 8421 1665036 478.7MB/s man [ +2.6%] + BM_UFlat/16 112053 112048 100000 1009.3MB/s pb [ -0.4%] + BM_UFlat/17 416723 416713 33612 421.8MB/s gaviota [ -2.0%] + +R=sanjay + +------------------------------------------------------------------------ +r52 | snappy.mirrorbot@gmail.com | 2011-11-08 15:46:39 +0100 (Tue, 08 Nov 2011) | 5 lines + +Fix public issue #53: Update the README to the API we actually open-sourced +with. + +R=sanjay + +------------------------------------------------------------------------ +r51 | snappy.mirrorbot@gmail.com | 2011-10-05 14:27:12 +0200 (Wed, 05 Oct 2011) | 5 lines + +In the format description, use a clearer example to emphasize that varints are +stored in little-endian. Patch from Christian von Roques. + +R=csilvers + +------------------------------------------------------------------------ +r50 | snappy.mirrorbot@gmail.com | 2011-09-15 21:34:06 +0200 (Thu, 15 Sep 2011) | 4 lines + +Release Snappy 1.0.4. + +R=sanjay + +------------------------------------------------------------------------ +r49 | snappy.mirrorbot@gmail.com | 2011-09-15 11:50:05 +0200 (Thu, 15 Sep 2011) | 5 lines + +Fix public issue #50: Include generic byteswap macros. +Also include Solaris 10 and FreeBSD versions. + +R=csilvers + +------------------------------------------------------------------------ +r48 | snappy.mirrorbot@gmail.com | 2011-08-10 20:57:27 +0200 (Wed, 10 Aug 2011) | 5 lines + +Partially fix public issue 50: Remove an extra comma from the end of some +enum declarations, as it seems the Sun compiler does not like it. + +Based on patch by Travis Vitek. + +------------------------------------------------------------------------ +r47 | snappy.mirrorbot@gmail.com | 2011-08-10 20:44:16 +0200 (Wed, 10 Aug 2011) | 4 lines + +Use the right #ifdef test for sys/mman.h. + +Based on patch by Travis Vitek. + +------------------------------------------------------------------------ +r46 | snappy.mirrorbot@gmail.com | 2011-08-10 03:22:09 +0200 (Wed, 10 Aug 2011) | 6 lines + +Fix public issue #47: Small comment cleanups in the unit test. + +Originally based on a patch by Patrick Pelletier. + +R=sanjay + +------------------------------------------------------------------------ +r45 | snappy.mirrorbot@gmail.com | 2011-08-10 03:14:43 +0200 (Wed, 10 Aug 2011) | 8 lines + +Fix public issue #46: Format description said "3-byte offset" +instead of "4-byte offset" for the longest copies. + +Also fix an inconsistency in the heading for section 2.2.3. +Both patches by Patrick Pelletier. + +R=csilvers + +------------------------------------------------------------------------ +r44 | snappy.mirrorbot@gmail.com | 2011-06-28 13:40:25 +0200 (Tue, 28 Jun 2011) | 8 lines + +Fix public issue #44: Make the definition and declaration of CompressFragment +identical, even regarding cv-qualifiers. + +This is required to work around a bug in the Solaris Studio C++ compiler +(it does not properly disregard cv-qualifiers when doing name mangling). + +R=sanjay + +------------------------------------------------------------------------ +r43 | snappy.mirrorbot@gmail.com | 2011-06-04 12:19:05 +0200 (Sat, 04 Jun 2011) | 7 lines + +Correct an inaccuracy in the Snappy format description. +(I stumbled into this when changing the way we decompress literals.) + +R=csilvers + +Revision created by MOE tool push_codebase. + +------------------------------------------------------------------------ +r42 | snappy.mirrorbot@gmail.com | 2011-06-03 22:53:06 +0200 (Fri, 03 Jun 2011) | 50 lines + +Speed up decompression by removing a fast-path attempt. + +Whenever we try to enter a copy fast-path, there is a certain cost in checking +that all the preconditions are in place, but it's normally offset by the fact +that we can usually take the cheaper path. However, in a certain path we've +already established that "avail < literal_length", which usually means that +either the available space is small, or the literal is big. Both will disqualify +us from taking the fast path, and thus we take the hit from the precondition +checking without gaining much from having a fast path. Thus, simply don't try +the fast path in this situation -- we're already on a slow path anyway +(one where we need to refill more data from the reader). + +I'm a bit surprised at how much this gained; it could be that this path is +more common than I thought, or that the simpler structure somehow makes the +compiler happier. I haven't looked at the assembler, but it's a win across +the board on both Core 2, Core i7 and Opteron, at least for the cases we +typically care about. The gains seem to be the largest on Core i7, though. +Results from my Core i7 workstation: + + + Benchmark Time(ns) CPU(ns) Iterations + --------------------------------------------------- + BM_UFlat/0 73337 73091 190996 1.3GB/s html [ +1.7%] + BM_UFlat/1 696379 693501 20173 965.5MB/s urls [ +2.7%] + BM_UFlat/2 9765 9734 1472135 12.1GB/s jpg [ +0.7%] + BM_UFlat/3 29720 29621 472973 3.0GB/s pdf [ +1.8%] + BM_UFlat/4 294636 293834 47782 1.3GB/s html4 [ +2.3%] + BM_UFlat/5 28399 28320 494700 828.5MB/s cp [ +3.5%] + BM_UFlat/6 12795 12760 1000000 833.3MB/s c [ +1.2%] + BM_UFlat/7 3984 3973 3526448 893.2MB/s lsp [ +5.7%] + BM_UFlat/8 991996 989322 14141 992.6MB/s xls [ +3.3%] + BM_UFlat/9 228620 227835 61404 636.6MB/s txt1 [ +4.0%] + BM_UFlat/10 197114 196494 72165 607.5MB/s txt2 [ +3.5%] + BM_UFlat/11 605240 603437 23217 674.4MB/s txt3 [ +3.7%] + BM_UFlat/12 804157 802016 17456 573.0MB/s txt4 [ +3.9%] + BM_UFlat/13 347860 346998 40346 1.4GB/s bin [ +1.2%] + BM_UFlat/14 44684 44559 315315 818.4MB/s sum [ +2.3%] + BM_UFlat/15 5120 5106 2739726 789.4MB/s man [ +3.3%] + BM_UFlat/16 76591 76355 183486 1.4GB/s pb [ +2.8%] + BM_UFlat/17 238564 237828 58824 739.1MB/s gaviota [ +1.6%] + BM_UValidate/0 42194 42060 333333 2.3GB/s html [ -0.1%] + BM_UValidate/1 433182 432005 32407 1.5GB/s urls [ -0.1%] + BM_UValidate/2 197 196 71428571 603.3GB/s jpg [ +0.5%] + BM_UValidate/3 14494 14462 972222 6.1GB/s pdf [ +0.5%] + BM_UValidate/4 168444 167836 83832 2.3GB/s html4 [ +0.1%] + +R=jeff + +Revision created by MOE tool push_codebase. + +------------------------------------------------------------------------ +r41 | snappy.mirrorbot@gmail.com | 2011-06-03 22:47:14 +0200 (Fri, 03 Jun 2011) | 43 lines + +Speed up decompression by not needing a lookup table for literal items. + +Looking up into and decoding the values from char_table has long shown up as a +hotspot in the decompressor. While it turns out that it's hard to make a more +efficient decoder for the copy ops, the literals are simple enough that we can +decode them without needing a table lookup. (This means that 1/4 of the table +is now unused, although that in itself doesn't buy us anything.) + +The gains are small, but definitely present; some tests win as much as 10%, +but 1-4% is more typical. These results are from Core i7, in 64-bit mode; +Core 2 and Opteron show similar results. (I've run with more iterations +than unusual to make sure the smaller gains don't drown entirely in noise.) + + Benchmark Time(ns) CPU(ns) Iterations + --------------------------------------------------- + BM_UFlat/0 74665 74428 182055 1.3GB/s html [ +3.1%] + BM_UFlat/1 714106 711997 19663 940.4MB/s urls [ +4.4%] + BM_UFlat/2 9820 9789 1427115 12.1GB/s jpg [ -1.2%] + BM_UFlat/3 30461 30380 465116 2.9GB/s pdf [ +0.8%] + BM_UFlat/4 301445 300568 46512 1.3GB/s html4 [ +2.2%] + BM_UFlat/5 29338 29263 479452 801.8MB/s cp [ +1.6%] + BM_UFlat/6 13004 12970 1000000 819.9MB/s c [ +2.1%] + BM_UFlat/7 4180 4168 3349282 851.4MB/s lsp [ +1.3%] + BM_UFlat/8 1026149 1024000 10000 959.0MB/s xls [+10.7%] + BM_UFlat/9 237441 236830 59072 612.4MB/s txt1 [ +0.3%] + BM_UFlat/10 203966 203298 69307 587.2MB/s txt2 [ +0.8%] + BM_UFlat/11 627230 625000 22400 651.2MB/s txt3 [ +0.7%] + BM_UFlat/12 836188 833979 16787 551.0MB/s txt4 [ +1.3%] + BM_UFlat/13 351904 350750 39886 1.4GB/s bin [ +3.8%] + BM_UFlat/14 45685 45562 308370 800.4MB/s sum [ +5.9%] + BM_UFlat/15 5286 5270 2656546 764.9MB/s man [ +1.5%] + BM_UFlat/16 78774 78544 178117 1.4GB/s pb [ +4.3%] + BM_UFlat/17 242270 241345 58091 728.3MB/s gaviota [ +1.2%] + BM_UValidate/0 42149 42000 333333 2.3GB/s html [ -3.0%] + BM_UValidate/1 432741 431303 32483 1.5GB/s urls [ +7.8%] + BM_UValidate/2 198 197 71428571 600.7GB/s jpg [+16.8%] + BM_UValidate/3 14560 14521 965517 6.1GB/s pdf [ -4.1%] + BM_UValidate/4 169065 168671 83832 2.3GB/s html4 [ -2.9%] + +R=jeff + +Revision created by MOE tool push_codebase. + +------------------------------------------------------------------------ +r40 | snappy.mirrorbot@gmail.com | 2011-06-03 00:57:41 +0200 (Fri, 03 Jun 2011) | 2 lines + +Release Snappy 1.0.3. + +------------------------------------------------------------------------ +r39 | snappy.mirrorbot@gmail.com | 2011-06-02 20:06:54 +0200 (Thu, 02 Jun 2011) | 11 lines + +Remove an unneeded goto in the decompressor; it turns out that the +state of ip_ after decompression (or attempted decompresion) is +completely irrelevant, so we don't need the trailer. + +Performance is, as expected, mostly flat -- there's a curious ~3-5% +loss in the "lsp" test, but that test case is so short it is hard to say +anything definitive about why (most likely, it's some sort of +unrelated effect). + +R=jeff + +------------------------------------------------------------------------ +r38 | snappy.mirrorbot@gmail.com | 2011-06-02 19:59:40 +0200 (Thu, 02 Jun 2011) | 52 lines + +Speed up decompression by caching ip_. + +It is seemingly hard for the compiler to understand that ip_, the current input +pointer into the compressed data stream, can not alias on anything else, and +thus using it directly will incur memory traffic as it cannot be kept in a +register. The code already knew about this and cached it into a local +variable, but since Step() only decoded one tag, it had to move ip_ back into +place between every tag. This seems to have cost us a significant amount of +performance, so changing Step() into a function that decodes as much as it can +before it saves ip_ back and returns. (Note that Step() was already inlined, +so it is not the manual inlining that buys the performance here.) + +The wins are about 3-6% for Core 2, 6-13% on Core i7 and 5-12% on Opteron +(for plain array-to-array decompression, in 64-bit opt mode). + +There is a tiny difference in the behavior here; if an invalid literal is +encountered (ie., the writer refuses the Append() operation), ip_ will now +point to the byte past the tag byte, instead of where the literal was +originally thought to end. However, we don't use ip_ for anything after +DecompressAllTags() has returned, so this should not change external behavior +in any way. + +Microbenchmark results for Core i7, 64-bit (Opteron results are similar): + +Benchmark Time(ns) CPU(ns) Iterations +--------------------------------------------------- +BM_UFlat/0 79134 79110 8835 1.2GB/s html [ +6.2%] +BM_UFlat/1 786126 786096 891 851.8MB/s urls [+10.0%] +BM_UFlat/2 9948 9948 69125 11.9GB/s jpg [ -1.3%] +BM_UFlat/3 31999 31998 21898 2.7GB/s pdf [ +6.5%] +BM_UFlat/4 318909 318829 2204 1.2GB/s html4 [ +6.5%] +BM_UFlat/5 31384 31390 22363 747.5MB/s cp [ +9.2%] +BM_UFlat/6 14037 14034 49858 757.7MB/s c [+10.6%] +BM_UFlat/7 4612 4612 151395 769.5MB/s lsp [ +9.5%] +BM_UFlat/8 1203174 1203007 582 816.3MB/s xls [+19.3%] +BM_UFlat/9 253869 253955 2757 571.1MB/s txt1 [+11.4%] +BM_UFlat/10 219292 219290 3194 544.4MB/s txt2 [+12.1%] +BM_UFlat/11 672135 672131 1000 605.5MB/s txt3 [+11.2%] +BM_UFlat/12 902512 902492 776 509.2MB/s txt4 [+12.5%] +BM_UFlat/13 372110 371998 1881 1.3GB/s bin [ +5.8%] +BM_UFlat/14 50407 50407 10000 723.5MB/s sum [+13.5%] +BM_UFlat/15 5699 5701 100000 707.2MB/s man [+12.4%] +BM_UFlat/16 83448 83424 8383 1.3GB/s pb [ +5.7%] +BM_UFlat/17 256958 256963 2723 684.1MB/s gaviota [ +7.9%] +BM_UValidate/0 42795 42796 16351 2.2GB/s html [+25.8%] +BM_UValidate/1 490672 490622 1427 1.3GB/s urls [+22.7%] +BM_UValidate/2 237 237 2950297 499.0GB/s jpg [+24.9%] +BM_UValidate/3 14610 14611 47901 6.0GB/s pdf [+26.8%] +BM_UValidate/4 171973 171990 4071 2.2GB/s html4 [+25.7%] + + + +------------------------------------------------------------------------ +r37 | snappy.mirrorbot@gmail.com | 2011-05-17 10:48:25 +0200 (Tue, 17 May 2011) | 10 lines + + +Fix the numbering of the headlines in the Snappy format description. + +R=csilvers +DELTA=4 (0 added, 0 deleted, 4 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1906 + +------------------------------------------------------------------------ +r36 | snappy.mirrorbot@gmail.com | 2011-05-16 10:59:18 +0200 (Mon, 16 May 2011) | 12 lines + + +Fix public issue #32: Add compressed format documentation for Snappy. +This text is new, but an earlier version from Zeev Tarantov was used +as reference. + +R=csilvers +DELTA=112 (111 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1867 + +------------------------------------------------------------------------ +r35 | snappy.mirrorbot@gmail.com | 2011-05-09 23:29:02 +0200 (Mon, 09 May 2011) | 12 lines + + +Fix public issue #39: Pick out the median runs based on CPU time, +not real time. Also, use nth_element instead of sort, since we +only need one element. + +R=csilvers +DELTA=5 (3 added, 0 deleted, 2 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1799 + +------------------------------------------------------------------------ +r34 | snappy.mirrorbot@gmail.com | 2011-05-09 23:28:45 +0200 (Mon, 09 May 2011) | 19 lines + + +Fix public issue #38: Make the microbenchmark framework handle +properly cases where gettimeofday() can stand return the same +result twice (as sometimes on GNU/Hurd) or go backwards +(as when the user adjusts the clock). We avoid a division-by-zero, +and put a lower bound on the number of iterations -- the same +amount as we use to calibrate. + +We should probably use CLOCK_MONOTONIC for platforms that support +it, to be robust against clock adjustments; we already use Windows' +monotonic timers. However, that's for a later changelist. + +R=csilvers +DELTA=7 (5 added, 0 deleted, 2 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1798 + +------------------------------------------------------------------------ +r33 | snappy.mirrorbot@gmail.com | 2011-05-04 01:22:52 +0200 (Wed, 04 May 2011) | 11 lines + + +Fix public issue #37: Only link snappy_unittest against -lz and other autodetected +libraries, not libsnappy.so (which doesn't need any such dependency). + +R=csilvers +DELTA=20 (14 added, 0 deleted, 6 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1710 + +------------------------------------------------------------------------ +r32 | snappy.mirrorbot@gmail.com | 2011-05-04 01:22:33 +0200 (Wed, 04 May 2011) | 11 lines + + +Release Snappy 1.0.2, to get the license change and various other fixes into +a release. + +R=csilvers +DELTA=239 (236 added, 0 deleted, 3 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1709 + +------------------------------------------------------------------------ +r31 | snappy.mirrorbot@gmail.com | 2011-04-26 14:34:55 +0200 (Tue, 26 Apr 2011) | 15 lines + + +Fix public issue #30: Stop using gettimeofday() altogether on Win32, +as MSVC doesn't include it. Replace with QueryPerformanceCounter(), +which is monotonic and probably reasonably high-resolution. +(Some machines have traditionally had bugs in QPC, but they should +be relatively rare these days, and there's really no much better +alternative that I know of.) + +R=csilvers +DELTA=74 (55 added, 19 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1556 + +------------------------------------------------------------------------ +r30 | snappy.mirrorbot@gmail.com | 2011-04-26 14:34:37 +0200 (Tue, 26 Apr 2011) | 11 lines + + +Fix public issue #31: Don't reset PATH in autogen.sh; instead, do the trickery +we need for our own build system internally. + +R=csilvers +DELTA=16 (13 added, 1 deleted, 2 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1555 + +------------------------------------------------------------------------ +r29 | snappy.mirrorbot@gmail.com | 2011-04-16 00:55:56 +0200 (Sat, 16 Apr 2011) | 12 lines + + +When including <windows.h>, define WIN32_LEAN_AND_MEAN first, +so we won't pull in macro definitions of things like min() and max(), +which can conflict with <algorithm>. + +R=csilvers +DELTA=1 (1 added, 0 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1485 + +------------------------------------------------------------------------ +r28 | snappy.mirrorbot@gmail.com | 2011-04-11 11:07:01 +0200 (Mon, 11 Apr 2011) | 15 lines + + +Fix public issue #29: Write CPU timing code for Windows, based on GetProcessTimes() +instead of getursage(). + +I thought I'd already committed this patch, so that the 1.0.1 release already +would have a Windows-compatible snappy_unittest, but I'd seemingly deleted it +instead, so this is a reconstruction. + +R=csilvers +DELTA=43 (39 added, 3 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1295 + +------------------------------------------------------------------------ +r27 | snappy.mirrorbot@gmail.com | 2011-04-08 11:51:53 +0200 (Fri, 08 Apr 2011) | 22 lines + + +Include C bindings of Snappy, contributed by Martin Gieseking. + +I've made a few changes since Martin's version; mostly style nits, but also +a semantic change -- most functions that return bool in the C++ version now +return an enum, to better match typical C (and zlib) semantics. + +I've kept the copyright notice, since Martin is obviously the author here; +he has signed the contributor license agreement, though, so this should not +hinder Google's use in the future. + +We'll need to update the libtool version number to match the added interface, +but as of http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html +I'm going to wait until public release. + +R=csilvers +DELTA=238 (233 added, 0 deleted, 5 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1294 + +------------------------------------------------------------------------ +r26 | snappy.mirrorbot@gmail.com | 2011-04-07 18:36:43 +0200 (Thu, 07 Apr 2011) | 13 lines + + +Replace geo.protodata with a newer version. + +The data compresses/decompresses slightly faster than the old data, and has +similar density. + +R=lookingbill +DELTA=1 (0 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1288 + +------------------------------------------------------------------------ +r25 | snappy.mirrorbot@gmail.com | 2011-03-30 22:27:53 +0200 (Wed, 30 Mar 2011) | 12 lines + + +Fix public issue #27: Add HAVE_CONFIG_H tests around the config.h +inclusion in snappy-stubs-internal.h, which eases compiling outside the +automake/autoconf framework. + +R=csilvers +DELTA=5 (4 added, 1 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1152 + +------------------------------------------------------------------------ +r24 | snappy.mirrorbot@gmail.com | 2011-03-30 22:27:39 +0200 (Wed, 30 Mar 2011) | 13 lines + + +Fix public issue #26: Take memory allocation and reallocation entirely out of the +Measure() loop. This gives all algorithms a small speed boost, except Snappy which +already didn't do reallocation (so the measurements were slightly biased in its +favor). + +R=csilvers +DELTA=92 (69 added, 9 deleted, 14 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1151 + +------------------------------------------------------------------------ +r23 | snappy.mirrorbot@gmail.com | 2011-03-30 22:25:09 +0200 (Wed, 30 Mar 2011) | 18 lines + + +Renamed "namespace zippy" to "namespace snappy" to reduce +the differences from the opensource code. Will make it easier +in the future to mix-and-match third-party code that uses +snappy with google code. + +Currently, csearch shows that the only external user of +"namespace zippy" is some bigtable code that accesses +a TEST variable, which is temporarily kept in the zippy +namespace. + +R=sesse +DELTA=123 (18 added, 3 deleted, 102 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1150 + +------------------------------------------------------------------------ +r22 | snappy.mirrorbot@gmail.com | 2011-03-29 00:17:04 +0200 (Tue, 29 Mar 2011) | 11 lines + + +Put back the final few lines of what was truncated during the +license header change. + +R=csilvers +DELTA=5 (4 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1094 + +------------------------------------------------------------------------ +r21 | snappy.mirrorbot@gmail.com | 2011-03-26 03:34:34 +0100 (Sat, 26 Mar 2011) | 20 lines + + +Change on 2011-03-25 19:18:00-07:00 by sesse + + Replace the Apache 2.0 license header by the BSD-type license header; + somehow a lot of the files were missed in the last round. + + R=dannyb,csilvers + DELTA=147 (74 added, 2 deleted, 71 changed) + +Change on 2011-03-25 19:25:07-07:00 by sesse + + Unbreak the build; the relicensing removed a bit too much (only comments + were intended, but I also accidentially removed some of the top lines of + the actual source). + + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1072 + +------------------------------------------------------------------------ +r20 | snappy.mirrorbot@gmail.com | 2011-03-25 17:14:41 +0100 (Fri, 25 Mar 2011) | 10 lines + + +Change Snappy from the Apache 2.0 to a BSD-type license. + +R=dannyb +DELTA=328 (80 added, 184 deleted, 64 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1061 + +------------------------------------------------------------------------ +r19 | snappy.mirrorbot@gmail.com | 2011-03-25 01:39:01 +0100 (Fri, 25 Mar 2011) | 11 lines + + +Release Snappy 1.0.1, to soup up all the various small changes +that have been made since release. + +R=csilvers +DELTA=266 (260 added, 0 deleted, 6 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1057 + +------------------------------------------------------------------------ +r18 | snappy.mirrorbot@gmail.com | 2011-03-24 20:15:54 +0100 (Thu, 24 Mar 2011) | 11 lines + + +Fix a microbenchmark crash on mingw32; seemingly %lld is not universally +supported on Windows, and %I64d is recommended instead. + +R=csilvers +DELTA=6 (5 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1034 + +------------------------------------------------------------------------ +r17 | snappy.mirrorbot@gmail.com | 2011-03-24 20:15:27 +0100 (Thu, 24 Mar 2011) | 13 lines + + +Fix public issue #19: Fix unit test when Google Test is installed but the +gflags package isn't (Google Test is not properly initialized). + +Patch by Martin Gieseking. + +R=csilvers +DELTA=2 (1 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1033 + +------------------------------------------------------------------------ +r16 | snappy.mirrorbot@gmail.com | 2011-03-24 20:13:57 +0100 (Thu, 24 Mar 2011) | 15 lines + + +Make the unit test work on systems without mmap(). This is required for, +among others, Windows support. For Windows in specific, we could have used +CreateFileMapping/MapViewOfFile, but this should at least get us a bit closer +to compiling, and is of course also relevant for embedded systems with no MMU. + +(Part 2/2) + +R=csilvers +DELTA=15 (12 added, 3 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1032 + +------------------------------------------------------------------------ +r15 | snappy.mirrorbot@gmail.com | 2011-03-24 20:12:27 +0100 (Thu, 24 Mar 2011) | 15 lines + + +Make the unit test work on systems without mmap(). This is required for, +among others, Windows support. For Windows in specific, we could have used +CreateFileMapping/MapViewOfFile, but this should at least get us a bit closer +to compiling, and is of course also relevant for embedded systems with no MMU. + +(Part 1/2) + +R=csilvers +DELTA=9 (8 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1031 + +------------------------------------------------------------------------ +r14 | snappy.mirrorbot@gmail.com | 2011-03-24 00:17:36 +0100 (Thu, 24 Mar 2011) | 14 lines + + +Fix public issue #12: Don't keep autogenerated auto* files in Subversion; +it causes problems with others sending patches etc.. + +We can't get this 100% hermetic anyhow, due to files like lt~obsolete.m4, +so we can just as well go cleanly in the other direction. + +R=csilvers +DELTA=21038 (0 added, 21036 deleted, 2 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=1012 + +------------------------------------------------------------------------ +r13 | snappy.mirrorbot@gmail.com | 2011-03-23 18:50:49 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Fix public issue tracker bug #3: Call AC_SUBST([LIBTOOL_DEPS]), or the rule +to rebuild libtool in Makefile.am won't work. + +R=csilvers +DELTA=1 (1 added, 0 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=997 + +------------------------------------------------------------------------ +r12 | snappy.mirrorbot@gmail.com | 2011-03-23 12:16:39 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Fix public issue #10: Don't add GTEST_CPPFLAGS to snappy_unittest_CXXFLAGS; +it's not needed (CPPFLAGS are always included when compiling). + +R=csilvers +DELTA=1 (0 added, 1 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=994 + +------------------------------------------------------------------------ +r11 | snappy.mirrorbot@gmail.com | 2011-03-23 12:16:18 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Fix public issue #9: Add -Wall -Werror to automake flags. +(This concerns automake itself, not the C++ compiler.) + +R=csilvers +DELTA=4 (3 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=993 + +------------------------------------------------------------------------ +r10 | snappy.mirrorbot@gmail.com | 2011-03-23 12:13:37 +0100 (Wed, 23 Mar 2011) | 10 lines + + +Fix a typo in the Snappy README file. + +R=csilvers +DELTA=1 (0 added, 0 deleted, 1 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=992 + +------------------------------------------------------------------------ +r9 | snappy.mirrorbot@gmail.com | 2011-03-23 12:13:13 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Fix public issue #6: Add a --with-gflags for disabling gflags autodetection +and using a manually given setting (use/don't use) instead. + +R=csilvers +DELTA=16 (13 added, 0 deleted, 3 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=991 + +------------------------------------------------------------------------ +r8 | snappy.mirrorbot@gmail.com | 2011-03-23 12:12:44 +0100 (Wed, 23 Mar 2011) | 12 lines + + +Fix public issue #5: Replace the EXTRA_LIBSNAPPY_LDFLAGS setup with something +slightly more standard, that also doesn't leak libtool command-line into +configure.ac. + +R=csilvers +DELTA=7 (0 added, 4 deleted, 3 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=990 + +------------------------------------------------------------------------ +r7 | snappy.mirrorbot@gmail.com | 2011-03-23 12:12:22 +0100 (Wed, 23 Mar 2011) | 10 lines + + +Fix public issue #4: Properly quote all macro arguments in configure.ac. + +R=csilvers +DELTA=16 (0 added, 0 deleted, 16 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=989 + +------------------------------------------------------------------------ +r6 | snappy.mirrorbot@gmail.com | 2011-03-23 12:11:54 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Fix public issue #7: Don't use internal variables named ac_*, as those belong +to autoconf's namespace. + +R=csilvers +DELTA=6 (0 added, 0 deleted, 6 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=988 + +------------------------------------------------------------------------ +r5 | snappy.mirrorbot@gmail.com | 2011-03-23 12:11:09 +0100 (Wed, 23 Mar 2011) | 10 lines + + +Add missing licensing headers to a few files. (Part 2/2.) + +R=csilvers +DELTA=12 (12 added, 0 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=987 + +------------------------------------------------------------------------ +r4 | snappy.mirrorbot@gmail.com | 2011-03-23 12:10:39 +0100 (Wed, 23 Mar 2011) | 10 lines + + +Add mising licensing headers to a few files. (Part 1/2.) + +R=csilvers +DELTA=24 (24 added, 0 deleted, 0 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=986 + +------------------------------------------------------------------------ +r3 | snappy.mirrorbot@gmail.com | 2011-03-23 12:10:04 +0100 (Wed, 23 Mar 2011) | 11 lines + + +Use the correct license file for the Apache 2.0 license; +spotted by Florian Weimer. + +R=csilvers +DELTA=202 (174 added, 0 deleted, 28 changed) + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION=985 + +------------------------------------------------------------------------ +r2 | snappy.mirrorbot@gmail.com | 2011-03-18 18:14:15 +0100 (Fri, 18 Mar 2011) | 6 lines + + + + +Revision created by MOE tool push_codebase. +MOE_MIGRATION= + +------------------------------------------------------------------------ +r1 | sesse@google.com | 2011-03-18 18:13:52 +0100 (Fri, 18 Mar 2011) | 2 lines + +Create trunk directory. + +------------------------------------------------------------------------ |