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Commit645c432d61(pack-objects: use reachability bitmap index when generating non-stdout pack, 2016-09-10) added two timing tests for packing to an on-disk file, both with and without bitmaps. However, the non-bitmap one isn't interesting to have as part of p5310's regression suite. It _could_ be used as a baseline to show off the improvement in the bitmap case, but: - the point of the t/perf suite is to find performance regressions, and it won't help with that. We don't compare the numbers between two tests (which the perf suite has no idea are even related), and any change in its numbers would have nothing to do with bitmaps. - it did show off the improvement in the commit message of645c432d61, but it wasn't even necessary there. The bitmap case already shows an improvement (because before the patch, it behaved the same as the non-bitmap case), and the perf suite is even able to show the difference between the before and after measurements. On top of that, it's one of the most expensive tests in the suite, clocking in around 60s for linux.git on my machine (as compared to 16s for the bitmapped version). And by default when using "./run", we'd run it three times! So let's just drop it. It's not useful and is adding minutes to perf runs. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
90 lines
2.3 KiB
Bash
Executable file
90 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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test_description='Tests pack performance using bitmaps'
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. ./perf-lib.sh
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test_perf_large_repo
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# note that we do everything through config,
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# since we want to be able to compare bitmap-aware
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# git versus non-bitmap git
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#
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# We intentionally use the deprecated pack.writebitmaps
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# config so that we can test against older versions of git.
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test_expect_success 'setup bitmap config' '
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git config pack.writebitmaps true
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'
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test_perf 'repack to disk' '
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git repack -ad
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'
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test_perf 'simulated clone' '
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git pack-objects --stdout --all </dev/null >/dev/null
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'
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test_perf 'simulated fetch' '
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have=$(git rev-list HEAD~100 -1) &&
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{
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echo HEAD &&
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echo ^$have
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} | git pack-objects --revs --stdout >/dev/null
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'
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test_perf 'pack to file (bitmap)' '
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git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
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'
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test_perf 'rev-list (commits)' '
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git rev-list --all --use-bitmap-index >/dev/null
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'
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test_perf 'rev-list (objects)' '
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git rev-list --all --use-bitmap-index --objects >/dev/null
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'
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test_perf 'rev-list count with blob:none' '
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git rev-list --use-bitmap-index --count --objects --all \
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--filter=blob:none >/dev/null
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'
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test_perf 'rev-list count with blob:limit=1k' '
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git rev-list --use-bitmap-index --count --objects --all \
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--filter=blob:limit=1k >/dev/null
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'
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test_perf 'simulated partial clone' '
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git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
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'
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test_expect_success 'create partial bitmap state' '
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# pick a commit to represent the repo tip in the past
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cutoff=$(git rev-list HEAD~100 -1) &&
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orig_tip=$(git rev-parse HEAD) &&
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# now kill off all of the refs and pretend we had
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# just the one tip
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rm -rf .git/logs .git/refs/* .git/packed-refs &&
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git update-ref HEAD $cutoff &&
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# and then repack, which will leave us with a nice
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# big bitmap pack of the "old" history, and all of
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# the new history will be loose, as if it had been pushed
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# up incrementally and exploded via unpack-objects
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git repack -Ad &&
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# and now restore our original tip, as if the pushes
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# had happened
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git update-ref HEAD $orig_tip
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'
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test_perf 'clone (partial bitmap)' '
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git pack-objects --stdout --all </dev/null >/dev/null
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'
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test_perf 'pack to file (partial bitmap)' '
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git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
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'
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test_done
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