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authorLibravatar René Scharfe <l.s.r@web.de>2020-02-04 22:25:34 +0100
committerLibravatar Junio C Hamano <gitster@pobox.com>2020-02-05 10:24:15 -0800
commit977dc1912bd74dbc7f94581f36b7e78eae49a8c3 (patch)
tree19ffd377274b29ffd0ae529af7ceeac250f9119a /Documentation/config/interactive.txt
parentname-rev: pre-size buffer in get_parent_name() (diff)
downloadtgif-977dc1912bd74dbc7f94581f36b7e78eae49a8c3.tar.xz
name-rev: generate name strings only if they are better
Leave setting the tip_name member of struct rev_name to callers of create_or_update_name(). This avoids allocations for names that are rejected by that function. Here's how this affects the runtime when working with a fresh clone of Git's own repository; performance numbers by hyperfine before: Benchmark #1: ./git -C ../git-pristine/ name-rev --all Time (mean ± σ): 437.8 ms ± 4.0 ms [User: 422.5 ms, System: 15.2 ms] Range (min … max): 432.8 ms … 446.3 ms 10 runs ... and with this patch: Benchmark #1: ./git -C ../git-pristine/ name-rev --all Time (mean ± σ): 408.5 ms ± 1.4 ms [User: 387.2 ms, System: 21.2 ms] Range (min … max): 407.1 ms … 411.7 ms 10 runs Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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