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|
#!/bin/sh
test_description='performance of fetches from bitmapped packs'
. ./perf-lib.sh
test_fetch_bitmaps () {
test_expect_success 'setup test directory' '
rm -fr * .git
'
test_perf_default_repo
test_expect_success 'create bitmapped server repo' '
git config pack.writebitmaps true &&
git config pack.writeBitmapLookupTable '"$1"' &&
git repack -ad
'
# simulate a fetch from a repository that last fetched N days ago, for
# various values of N. We do so by following the first-parent chain,
# and assume the first entry in the chain that is N days older than the current
# HEAD is where the HEAD would have been then.
for days in 1 2 4 8 16 32 64 128; do
title=$(printf '%10s' "($days days)")
test_expect_success "setup revs from $days days ago" '
now=$(git log -1 --format=%ct HEAD) &&
then=$(($now - ($days * 86400))) &&
tip=$(git rev-list -1 --first-parent --until=$then HEAD) &&
{
echo HEAD &&
echo ^$tip
} >revs
'
test_perf "server $title (lookup=$1)" '
git pack-objects --stdout --revs \
--thin --delta-base-offset \
<revs >tmp.pack
'
test_size "size $title" '
wc -c <tmp.pack
'
test_perf "client $title (lookup=$1)" '
git index-pack --stdin --fix-thin <tmp.pack
'
done
}
test_fetch_bitmaps true
test_fetch_bitmaps false
test_done
|
