Diana Picus via llvm-dev
2017-May-19 13:14 UTC
[llvm-dev] Buildbots timing out on full builds
Hi, We've noticed that recently some of our bots (mostly clang-cmake-armv7-a15 and clang-cmake-thumbv7-a15) started timing out whenever someone commits a change to TableGen: r303418: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7268 r303346: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7242 r303341: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7239 r303259: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7198 TableGen changes before that (I checked about 3-4 of them) don't have this problem: r303253: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7197 That one in particular actually finishes the whole build in 635s, which is only a bit over 50% of the timeout limit (1200s). So, between r303253 and now, something happened that made full builds significantly slower. Does anyone have any idea what that might have been? Also, has anyone noticed this on other bots? Thanks, Diana
Daniel Sanders via llvm-dev
2017-May-19 13:54 UTC
[llvm-dev] Buildbots timing out on full builds
r303259 will have increased compile-time since it tripled the number of
importable
SelectionDAG rules but a quick measurement building the affected file:
ninja
lib/Target/<Target>/CMakeFiles/LLVM<Target>CodeGen.dir/<Target>InstructionSelector.cpp.o
for both ARM and AArch64 didn't show a significant increase. I'll check
whether
it made a different to linking.
sanitizer-x86_64-linux-fast also timed out after one of my commits this morning.
> On 19 May 2017, at 14:14, Diana Picus <diana.picus at linaro.org>
wrote:
>
> Hi,
>
> We've noticed that recently some of our bots (mostly
> clang-cmake-armv7-a15 and clang-cmake-thumbv7-a15) started timing out
> whenever someone commits a change to TableGen:
>
> r303418:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7268
> r303346:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7242
> r303341:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7239
> r303259:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7198
>
> TableGen changes before that (I checked about 3-4 of them) don't have
> this problem:
> r303253:
http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7197
>
> That one in particular actually finishes the whole build in 635s,
> which is only a bit over 50% of the timeout limit (1200s). So, between
> r303253 and now, something happened that made full builds
> significantly slower. Does anyone have any idea what that might have
> been? Also, has anyone noticed this on other bots?
>
> Thanks,
> Diana
Daniel Sanders via llvm-dev
2017-May-19 14:29 UTC
[llvm-dev] Buildbots timing out on full builds
> On 19 May 2017, at 14:54, Daniel Sanders via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > r303259 will have increased compile-time since it tripled the number of importable > SelectionDAG rules but a quick measurement building the affected file: > ninja lib/Target/<Target>/CMakeFiles/LLVM<Target>CodeGen.dir/<Target>InstructionSelector.cpp.o > for both ARM and AArch64 didn't show a significant increase. I'll check whether > it made a different to linking.I don't think it's r303259. Starting with a fully built r303259, then updating to r303258 and running 'ninja' gives me: real 2m28.273s user 13m23.171s sys 0m47.725s then updating to r303259 and running 'ninja' again gives me: real 2m19.052s user 13m38.802s sys 0m44.551s> sanitizer-x86_64-linux-fast also timed out after one of my commits this morning. > >> On 19 May 2017, at 14:14, Diana Picus <diana.picus at linaro.org> wrote: >> >> Hi, >> >> We've noticed that recently some of our bots (mostly >> clang-cmake-armv7-a15 and clang-cmake-thumbv7-a15) started timing out >> whenever someone commits a change to TableGen: >> >> r303418: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7268 >> r303346: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7242 >> r303341: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7239 >> r303259: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7198 >> >> TableGen changes before that (I checked about 3-4 of them) don't have >> this problem: >> r303253: http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/7197 >> >> That one in particular actually finishes the whole build in 635s, >> which is only a bit over 50% of the timeout limit (1200s). So, between >> r303253 and now, something happened that made full builds >> significantly slower. Does anyone have any idea what that might have >> been? Also, has anyone noticed this on other bots? >> >> Thanks, >> Diana > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev