GNU bug report logs - #28966
git fails test suite

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Package: guix; Reported by: Ricardo Wurmus <ricardo.wurmus@HIDDEN>; dated Tue, 24 Oct 2017 14:10:01 UTC; Maintainer for guix is bug-guix@HIDDEN.

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From: Marius Bakke <mbakke@HIDDEN>
To: Ricardo Wurmus <ricardo.wurmus@HIDDEN>, 28966 <at> debbugs.gnu.org
Subject: Re: bug#28966: git fails test suite
In-Reply-To: <idjy3o0vdrk.fsf@HIDDEN>
References: <idjy3o0vdrk.fsf@HIDDEN>
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Ricardo Wurmus <ricardo.wurmus@HIDDEN> writes:

> As of 62d48234e20c732ebefc1b4deb425f590b4241ca git fails at least one of
> its tests on my servers:
>
> --8<---------------cut here---------------start------------->8---
> not ok 185 - --contains and --no-contains work in a deep repo
> #
> #               >expect &&
> #               i=3D1 &&
> #               while test $i -lt 8000
> #               do
> #                       echo "commit refs/heads/master
> #       committer A U Thor <author@HIDDEN> $((1000000000 + $i * 100)=
) +0200
> #       data <<EOF
> #       commit #$i
> #       EOF"
> #                       test $i =3D 1 && echo "from refs/heads/master^0"
> #                       i=3D$(($i + 1))
> #               done | git fast-import &&
> #               git checkout master &&
> #               git tag far-far-away HEAD^ &&
> #               run_with_limited_stack git tag --contains HEAD >actual &&
> #               test_cmp expect actual &&
> #               run_with_limited_stack git tag --no-contains HEAD >actual=
 &&
> #               test_line_count "-gt" 10 actual
> #
> --8<---------------cut here---------------end--------------->8---
>
> The server has 1.5TB RAM and 192 cores.  I=E2=80=99ve tried to build git =
about 5
> times; some of these times I used =E2=80=9C--cores=3D1=E2=80=9D to force =
a sequential
> build, but the tests would still fail.

I wonder if this has anything to do with the fact that this test (and
one other) limits the stack size to 128 kB (ulimit -s).  FWIW here is
the commit that added this test:

https://github.com/git/git/commit/cbc60b67201e083a4970c8731c5382a575357e36

It has since been increased from 64kB to 128kB, so I wonder if the
attached patch will make any difference.  Can you try it?


--=-=-=
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 filename=0001-gnu-git-Increase-stack-size-for-tests.patch
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From=20f95ae3d32e5eab9797cb1591cca07c4d31f187ab Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@HIDDEN>
Date: Wed, 1 Nov 2017 21:11:29 +0100
Subject: [PATCH] gnu: git: Increase stack size for tests.

* gnu/packages/version-control.scm (git)[arguments]: Add substitution in
'patch-tests' phase.
=2D--
 gnu/packages/version-control.scm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gnu/packages/version-control.scm b/gnu/packages/version-contro=
l.scm
index af880c29f..9059284ed 100644
=2D-- a/gnu/packages/version-control.scm
+++ b/gnu/packages/version-control.scm
@@ -216,6 +216,12 @@ as well as the classic centralized workflow.")
             ;; Many tests contain inline shell scripts (hooks etc).
             (substitute* (find-files "t" "\\.sh$")
               (("#!/bin/sh") (string-append "#!" (which "sh"))))
+            ;; XXX: Some tests run with a limited stack size, but it may
+            ;; be too small for very large machines (1TB+).  See
+            ;; <https://bugs.gnu.org/28966>.
+            (substitute* "t/test-lib.sh"
+              (("\\(ulimit -s 128")
+               "(ulimit -s 256"))
             ;; Un-do shebang patching here to prevent checksum mismatch.
             (substitute* '("t/t4034/perl/pre" "t/t4034/perl/post")
               (("^#!.*/bin/perl") "#!/usr/bin/perl"))
=2D-=20
2.14.3


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Information forwarded to bug-guix@HIDDEN:
bug#28966; Package guix. Full text available.

Message received at 28966 <at> debbugs.gnu.org:


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From: Marius Bakke <mbakke@HIDDEN>
To: Ricardo Wurmus <ricardo.wurmus@HIDDEN>, 28966 <at> debbugs.gnu.org
Subject: Re: bug#28966: git fails test suite
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Ricardo Wurmus <ricardo.wurmus@HIDDEN> writes:

> As of 62d48234e20c732ebefc1b4deb425f590b4241ca git fails at least one of
> its tests on my servers:
>
> --8<---------------cut here---------------start------------->8---
> not ok 185 - --contains and --no-contains work in a deep repo
> #
> #               >expect &&
> #               i=3D1 &&
> #               while test $i -lt 8000
> #               do
> #                       echo "commit refs/heads/master
> #       committer A U Thor <author@HIDDEN> $((1000000000 + $i * 100)=
) +0200
> #       data <<EOF
> #       commit #$i
> #       EOF"
> #                       test $i =3D 1 && echo "from refs/heads/master^0"
> #                       i=3D$(($i + 1))
> #               done | git fast-import &&
> #               git checkout master &&
> #               git tag far-far-away HEAD^ &&
> #               run_with_limited_stack git tag --contains HEAD >actual &&
> #               test_cmp expect actual &&
> #               run_with_limited_stack git tag --no-contains HEAD >actual=
 &&
> #               test_line_count "-gt" 10 actual
> #
> --8<---------------cut here---------------end--------------->8---

"185" is very early in the test run, there could be similar cases
hiding as well.  Are you able to try and disable these tests?  If not,
I'll patch out at least this one in the next few days.

> The server has 1.5TB RAM and 192 cores.  I=E2=80=99ve tried to build git =
about 5
> times; some of these times I used =E2=80=9C--cores=3D1=E2=80=9D to force =
a sequential
> build, but the tests would still fail.

Odd that it fails sequentially as well.  It would be good to report this
upstream.

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bug#28966; Package guix. Full text available.

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From: Ricardo Wurmus <ricardo.wurmus@HIDDEN>
To: <bug-guix@HIDDEN>
Subject: git fails test suite
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As of 62d48234e20c732ebefc1b4deb425f590b4241ca git fails at least one of
its tests on my servers:

--8<---------------cut here---------------start------------->8---
not ok 185 - --contains and --no-contains work in a deep repo
#
#               >expect &&
#               i=3D1 &&
#               while test $i -lt 8000
#               do
#                       echo "commit refs/heads/master
#       committer A U Thor <author@HIDDEN> $((1000000000 + $i * 100)=
) +0200
#       data <<EOF
#       commit #$i
#       EOF"
#                       test $i =3D 1 && echo "from refs/heads/master^0"
#                       i=3D$(($i + 1))
#               done | git fast-import &&
#               git checkout master &&
#               git tag far-far-away HEAD^ &&
#               run_with_limited_stack git tag --contains HEAD >actual &&
#               test_cmp expect actual &&
#               run_with_limited_stack git tag --no-contains HEAD >actual=
 &&
#               test_line_count "-gt" 10 actual
#
--8<---------------cut here---------------end--------------->8---

The server has 1.5TB RAM and 192 cores.  I=E2=80=99ve tried to build git =
about 5
times; some of these times I used =E2=80=9C--cores=3D1=E2=80=9D to force =
a sequential
build, but the tests would still fail.

-- Ricardo




Acknowledgement sent to Ricardo Wurmus <ricardo.wurmus@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#28966; Package guix. Full text available.
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