Jerry Snitselaar <jsnitsel@xxxxxxxxxx> writes:
> Is this known and being looked into? I've seen a jump from 12 seconds
> to over 9 minutes with running git tag --contains on my kernel repo.
Thanks for a report. Yes, it seems that there is a recent
regression on the 'master' branch, not yet in any released version,
and we can observe with a much smaller repository X-<. E.g.
git tag --contains v2.5.0~12
in git itself seems to have got 10 times slower.
> snits ~/dev/linux> git --version
> git version 2.6.1.145.gb27dacc
>
> snits ~/dev/linux> time git tag --contains 825fcfc
> next-20151012
> next-20151013
> v4.3-rc5
>
> real 9m4.765s
> user 8m56.157s
> sys 0m2.450s
>
>
>
> snits ~/dev/linux> git --version
> git version 2.5.0.275.gac4cc86
>
> snits ~/dev/linux> time git tag --contains 825fcfc
> next-20151012
> next-20151013
> v4.3-rc5
>
> real 0m12.842s
> user 0m11.536s
> sys 0m1.098s
>
>
>
> b7cc53e92c806b73e14b03f60c17b7c29e52b4a4 is the first bad commit
> commit b7cc53e92c806b73e14b03f60c17b7c29e52b4a4
> Author: Karthik Nayak <karthik.188@xxxxxxxxx>
> Date: Fri Sep 11 20:36:16 2015 +0530
>
> tag.c: use 'ref-filter' APIs
>
> Make 'tag.c' use 'ref-filter' APIs for iterating through refs, sorting
> and printing of refs. This removes most of the code used in 'tag.c'
> replacing it with calls to the 'ref-filter' library.
>
> Make 'tag.c' use the 'filter_refs()' function provided by 'ref-filter'
> to filter out tags based on the options set.
>
> For printing tags we use 'show_ref_array_item()' function provided by
> 'ref-filter'.
>
> We improve the sorting option provided by 'tag.c' by using the sorting
> options provided by 'ref-filter'. This causes the test 'invalid sort
> parameter on command line' in t7004 to fail, as 'ref-filter' throws an
> error for all sorting fields which are incorrect. The test is changed
> to reflect the same.
>
> Modify documentation for the same.
>
> Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
> Mentored-by: Matthieu Moy <matthieu.moy@xxxxxxxxxxxxxxx>
> Signed-off-by: Karthik Nayak <karthik.188@xxxxxxxxx>
> Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
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