| #!/bin/sh |
| |
| test_description='performance of fetches from bitmapped packs' |
| . ./perf-lib.sh |
| |
| test_perf_default_repo |
| |
| test_expect_success 'create bitmapped server repo' ' |
| git config pack.writebitmaps true && |
| git config pack.writebitmaphashcache true && |
| 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" ' |
| git pack-objects --stdout --revs \ |
| --thin --delta-base-offset \ |
| <revs >tmp.pack |
| ' |
| |
| test_size "size $title" ' |
| wc -c <tmp.pack |
| ' |
| |
| test_perf "client $title" ' |
| git index-pack --stdin --fix-thin <tmp.pack |
| ' |
| done |
| |
| test_done |