[llvm-dev] clang-ppc64be-linux-lnt flakiness

[Bill Seurer via llvm-dev]

I looked at this a bit a while back when you first asked but I didn't 
see anything obviously wrong.

Benjamin, at least one of the referenced failures was on BE powerpc64. 
I don't remember if that one 
(http://lab.llvm.org:8011/builders/clang-ppc64be-linux-lnt/builds/4883) 
failed on stage 1 or 2 and the results pages are no longer available.

BTW, I tried testing the same revision many times on the same machine 
and other BE and LE powerpc machines and never saw this.

On 06/28/16 21:42, Sean Silva wrote:
> This just failed again:
> http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/1579
>
> Bill, could you take a look at this? This is like the 3rd time I've been
> incorrectly pinged by this buildbot due to this issue.
>
> -- Sean Silva
>
> On Mon, Jun 13, 2016 at 8:07 PM, Sean Silva <chisophugis at gmail.com
> <mailto:chisophugis at gmail.com>> wrote:
>
>     Thanks for taking a look. The flaky ASan test failure in the OP was
>     stage1 so it sounds like there may be multiple problems :(
>
>
>     -- Sean Silva
>
>     On Sun, Jun 12, 2016 at 7:32 AM, Benjamin Kramer
>     <benny.kra at gmail.com <mailto:benny.kra at gmail.com>> wrote:
>
>         I threw all the sanitizers I had access to on this test and didn't
>         find anything. The merging uses threads so I can't rule out
>         nondeterminism. It's strange that it only happens on ppc64le and
>         only
>         on stage 2, so an actual miscompile wouldn't surprise me either.
>
>         On Sun, Jun 12, 2016 at 4:26 PM, Sean Silva
>         <chisophugis at gmail.com <mailto:chisophugis at gmail.com>> wrote:
>          > Also, `Clang Tools :: include-fixer/merge.test` seems to be a
>         bit flaky:
>          >
>          >
>         http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/1304
>          >
>         http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/1315
>          >
>          > Ben, it looks like you're the one that added that test. Is
>         there any chance
>          > it could be a nondeterminism or something in the code?
>          >
>          > -- Sean Silva
>          >
>          > On Sun, Jun 12, 2016 at 1:41 AM, Sean Silva
>         <chisophugis at gmail.com <mailto:chisophugis at gmail.com>> wrote:
>          >>
>          >> Hi Bill, just a heads up but this bot seems to have
>         spuriously failed on a
>          >> build that only pulled in my commit r272505 which is unrelated.
>          >>
>          >>
>         http://lab.llvm.org:8011/builders/clang-ppc64be-linux-lnt/builds/4883
>          >>
>          >> -- Sean Silva
>          >
>          >
>
>
>


-- 

-Bill Seurer