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ea97002fc9
We time a straight "rev-list --all" and its "--object" counterpart, both going all the way to the root. However, we do not time a partial history walk. This patch adds an extreme case: a walk over a very small slice of history, but with a very large set of UNINTERESTING tips. This is similar to the connectivity check run by git on a small fetch, or the walk done by any pre-receive hooks that want to check incoming commits. This test reveals a performance regression in git v1.8.4.2, caused byfbd4a70(list-objects: mark more commits as edges in mark_edges_uninteresting, 2013-08-16): Test fbd4a703^fbd4a703------------------------------------------------------------------------------------------ 0001.1: rev-list --all 0.69(0.67+0.02) 0.69(0.68+0.01) +0.0% 0001.2: rev-list --all --objects 3.47(3.44+0.02) 3.48(3.44+0.03) +0.3% 0001.4: rev-list $commit --not --all 0.04(0.04+0.00) 0.04(0.04+0.00) +0.0% 0001.5: rev-list --objects $commit --not --all 0.04(0.03+0.00) 0.27(0.24+0.02) +575.0% Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
29 lines
569 B
Bash
Executable file
29 lines
569 B
Bash
Executable file
#!/bin/sh
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test_description="Tests history walking performance"
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. ./perf-lib.sh
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test_perf_default_repo
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test_perf 'rev-list --all' '
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git rev-list --all >/dev/null
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'
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test_perf 'rev-list --all --objects' '
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git rev-list --all --objects >/dev/null
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'
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test_expect_success 'create new unreferenced commit' '
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commit=$(git commit-tree HEAD^{tree} -p HEAD)
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'
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test_perf 'rev-list $commit --not --all' '
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git rev-list $commit --not --all >/dev/null
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'
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test_perf 'rev-list --objects $commit --not --all' '
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git rev-list --objects $commit --not --all >/dev/null
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'
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test_done
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