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| -rw-r--r-- | src/zstd/contrib/largeNbDicts/README.md | 25 |
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diff --git a/src/zstd/contrib/largeNbDicts/README.md b/src/zstd/contrib/largeNbDicts/README.md new file mode 100644 index 000000000..f29bcdfe8 --- /dev/null +++ b/src/zstd/contrib/largeNbDicts/README.md @@ -0,0 +1,25 @@ +largeNbDicts +===================== + +`largeNbDicts` is a benchmark test tool +dedicated to the specific scenario of +dictionary decompression using a very large number of dictionaries. +When dictionaries are constantly changing, they are always "cold", +suffering from increased latency due to cache misses. + +The tool is created in a bid to investigate performance for this scenario, +and experiment mitigation techniques. + +Command line : +``` +largeNbDicts [Options] filename(s) + +Options : +-r : recursively load all files in subdirectories (default: off) +-B# : split input into blocks of size # (default: no split) +-# : use compression level # (default: 3) +-D # : use # as a dictionary (default: create one) +-i# : nb benchmark rounds (default: 6) +--nbDicts=# : set nb of dictionaries to # (default: one per block) +-h : help (this text) +``` |