[GHC] #15065: T12903(profasm) produces a heap profile with out of sequence samples

[GHC]

#15065: T12903(profasm) produces a heap profile with out of sequence samples
---------------------------------+---------------------------------------
        Reporter:  alpmestan     |                Owner:  (none)
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:
       Component:  Profiling     |              Version:  8.5
      Resolution:                |             Keywords:
Operating System:  Linux         |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |            Test Case:  T12903(profasm)
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+---------------------------------------
Description changed by alpmestan:

Old description:

> {{{
> $ cd testsuite && make TEST="T12903" WAY="profasm" CLEANUP=0 ; cd ..
> [...]
> =====> T12903(profasm) 1 of 1 [0, 0, 0]
> cd "./rts/T12903.run" &&  "/home/alp/WT/ghc-slow-validate/inplace/test
> spaces/ghc-stage2" -o T12903 T12903.hs -dcore-lint -dcmm-lint -no-user-
> package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-
> groups -fdiagnostics-color=never -fno-diagnostics-show-caret -dno-debug-
> output  -O -prof -static -fprof-auto
> cd "./rts/T12903.run" && ./T12903 +RTS -hc -p -RTS
> cd "./rts/T12903.run" && "/home/alp/WT/ghc-slow-validate/inplace/test
> spaces/hp2ps" T12903
> hp2ps error when processing heap profile for T12903
> *** unexpected failure for T12903(profasm)
> [...]
> $ inplace/test\ \ \ spaces/hp2ps testsuite/tests/rts/T12903.run/T12903
> hp2ps: testsuite/tests/rts/T12903.run/T12903.hp, line 9, samples out of
> sequence
> $ cat testsuite/tests/rts/T12903.run/T12903.hp
> JOB "T12903 +RTS -hc -p"
> DATE "Wed Apr 18 11:59 2018"
> SAMPLE_UNIT "seconds"
> VALUE_UNIT "bytes"
> BEGIN_SAMPLE 0.000000
> END_SAMPLE 0.000000
> BEGIN_SAMPLE 0.004175
> END_SAMPLE 0.004175
> BEGIN_SAMPLE 0.000462
> END_SAMPLE 0.000462
> }}}
>
> This seems like an actual problem, completely unrelated to #12903, so I'm
> opening this ticket to track/fix this issue. I'll also mark T12903 as
> expected broken for the `profasm` way.

New description:

 {{{
 $ cd testsuite && make TEST="T12903" WAY="profasm" CLEANUP=0 ; cd ..
 [...]
 =====> T12903(profasm) 1 of 1 [0, 0, 0]
 cd "./rts/T12903.run" &&  "/home/alp/WT/ghc-slow-validate/inplace/test
 spaces/ghc-stage2" -o T12903 T12903.hs -dcore-lint -dcmm-lint -no-user-
 package-db -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups
 -fdiagnostics-color=never -fno-diagnostics-show-caret -dno-debug-output
 -O -prof -static -fprof-auto
 cd "./rts/T12903.run" && ./T12903 +RTS -hc -p -RTS
 cd "./rts/T12903.run" && "/home/alp/WT/ghc-slow-validate/inplace/test
 spaces/hp2ps" T12903
 hp2ps error when processing heap profile for T12903
 *** unexpected failure for T12903(profasm)
 [...]
 $ inplace/test\ \ \ spaces/hp2ps testsuite/tests/rts/T12903.run/T12903
 hp2ps: testsuite/tests/rts/T12903.run/T12903.hp, line 9, samples out of
 sequence
 $ cat testsuite/tests/rts/T12903.run/T12903.hp
 JOB "T12903 +RTS -hc -p"
 DATE "Wed Apr 18 11:59 2018"
 SAMPLE_UNIT "seconds"
 VALUE_UNIT "bytes"
 BEGIN_SAMPLE 0.000000
 END_SAMPLE 0.000000
 BEGIN_SAMPLE 0.004175
 END_SAMPLE 0.004175
 BEGIN_SAMPLE 0.000462
 END_SAMPLE 0.000462
 }}}

 This seems like an actual problem, completely unrelated to #12903, so I'm
 opening this ticket to track/fix this issue. I'll also mark T12903 as
 expected broken for the `profasm` way.

 EDIT: This was against 8b823f270e53627ddca1a993c05f1ab556742d96.

--

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15065#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler