[llvm-dev] Fwd: buildbot failure in LLVM on clang-ppc64-elf-linux2

Philip Reames via llvm-dev llvm-dev at lists.llvm.org
Tue Sep 29 14:57:35 PDT 2015



On 09/29/2015 01:38 PM, Bill Schmidt via llvm-dev wrote:
> On Tue, 2015-09-29 at 13:28 -0700, David Blaikie wrote:
>>
>> On Tue, Sep 29, 2015 at 1:13 PM, Bill Schmidt
>> <wschmidt at linux.vnet.ibm.com> wrote:
>>          On Tue, 2015-09-29 at 14:29 -0500, Hal Finkel wrote:
>>          > [+Bill and Bill]
>>          >
>>          > ----- Original Message -----
>>          > > From: "David Blaikie via llvm-dev"
>>          <llvm-dev at lists.llvm.org>
>>          > > To: "llvm-dev" <llvm-dev at lists.llvm.org>
>>          > > Sent: Tuesday, September 29, 2015 12:39:02 PM
>>          > > Subject: [llvm-dev] Fwd: buildbot failure in LLVM on
>>          clang-ppc64-elf-linux2
>>          > >
>>          > >
>>          > >
>>          > > This buildbot appears to have been failing for several
>>          weeks now (
>>          > >
>>          http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/19490
>>          > > ). Does anyone know/own/care about it?
>>          
>>          Answer: yes.
>>          
>>          We've had it under investigation since the problem started
>>          happening.
>>          It was difficult to track it down.  Eventually we traced it
>>          back to the
>>          shrink-wrap enablement, and the developer provided a fix.  The
>>          fix has
>>          proven to be insufficient; it fixed a problem with a gcc-built
>>          Clang,
>>          but we still have a problem with a self-hosted Clang.  The
>>          developer is
>>          currently verifying that disabling shrink-wrap on a
>>          self-hosting build
>>          will resolve the problem.  If so, the change to enable
>>          shrink-wrap for
>>          PowerPC will be reverted at once.  If not, I believe we will
>>          have to
>>          XFAIL the test to let the bot start working again until we can
>>          figure
>>          out another cause.
>>
>>
>> Thanks for the update!
>>   
>>          So, people have been working on this, but it is Not Good that
>>          the bot
>>          has been disabled for this long,
>>
>>
>> It's more than that the bot has been disabled - were it just disabled,
>> I wouldn't have seen it, nor written that email. The bot has been red
>> and prone to (though not always - as Renato's pointed out, a red bot
>> that remains red may not send email, but purple (exception)->red (even
>> if it were red before the exceptional result) does send email) send
>> email on some of its failures, which adds noise to the system and
>> makes it hard for developers to trust/act on buildbot results.
>>   
>>          and we will try to make sure this
>>          doesn't happen again.  The problem has been figuring out
>>          exactly what to
>>          revert, which has been more difficult than usual this time.
>>
>> Is there any reason the test couldn't've been XFAIL'd from the start,
>> while investigation continued?
> None.  We'll educate folks on this and attempt to ensure we do better
> next time.
Do we have a best practices page on this topic?  This seems like 
something which would be good to document.
>
> Bill
>> - Dave
>>   
>>          
>>          Thanks,
>>          Bill
>>          
>>          > >
>>          > >
>>          > > ---------- Forwarded message ----------
>>          > > From: < llvm.buildmaster at lab.llvm.org >
>>          > > Date: Mon, Sep 28, 2015 at 11:17 PM
>>          > > Subject: buildbot failure in LLVM on
>>          clang-ppc64-elf-linux2
>>          > > To: Aaron Ballman < aaron at aaronballman.com >, Adrian
>>          Prantl <
>>          > > aprantl at apple.com >, Andrew Kaylor <
>>          andrew.kaylor at intel.com >,
>>          > > Artem Belevich < tra at google.com >, Artur Pilipenko <
>>          > > apilipenko at azulsystems.com >, Dan Gohman <
>>          dan433584 at gmail.com >,
>>          > > Daniel Jasper < djasper at google.com >, Daniel Sanders <
>>          > > daniel.sanders at imgtec.com >, David Blaikie <
>>          dblaikie at gmail.com >,
>>          > > Evgeniy Stepanov < eugeni.stepanov at gmail.com >, Fiona
>>          Glaser <
>>          > > escha at apple.com >, Guillaume Papin <
>>          guillaume.papin at epitech.eu >,
>>          > > Matt Arsenault < Matthew.Arsenault at amd.com >, Matthias
>>          Braun <
>>          > > matze at braunis.de >, Philip Reames <
>>          listmail at philipreames.com >,
>>          > > Piotr Padlewski < prazek at google.com >, Reid Kleckner <
>>          > > rnk at google.com >, Richard Trieu < rtrieu at google.com >,
>>          Sanjay Patel
>>          > > < spatel at rotateright.com >, Sanjoy Das <
>>          > > sanjoy at playingwithpointers.com >, Sean Silva <
>>          chisophugis at gmail.com
>>          > > >, Weiming Zhao < weimingz at codeaurora.org >
>>          > > Cc: gkistanova at gmail.com
>>          > >
>>          > >
>>          > > The Buildbot has detected a new failure on builder
>>          > > clang-ppc64-elf-linux2 while building cfe.
>>          > > Full details are available at:
>>          > >
>>          http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/19559
>>          > >
>>          > > Buildbot URL: http://lab.llvm.org:8011/
>>          > >
>>          > > Buildslave for this Build: chinook-clangslave2
>>          > >
>>          > > Build Reason: scheduler
>>          > > Build Source Stamp: [branch trunk] 248769
>>          > > Blamelist:
>>          > >
>>          aaronballman,adrian,akaylor,apilipenko,arsenm,dblaikie,djasper,djg,dsanders,escha,eugenis,matze,papin_g,prazek,reames,rnk,rtrieu,sanjoy,silvas,spatel,tra,weimingz
>>          > >
>>          > > BUILD FAILED: failed check-all_1
>>          > >
>>          > > sincerely,
>>          > > -The Buildbot
>>          > >
>>          > >
>>          > >
>>          > >
>>          > >
>>          > > _______________________________________________
>>          > > LLVM Developers mailing list
>>          > > llvm-dev at lists.llvm.org
>>          > > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>          > >
>>          >
>>          
>>          
>>          
>>
>>
>
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