[GHC] #15668: Allocations values for some compile tests are way too hight

[GHC]

#15668: Allocations values for some compile tests are way too hight
---------------------------------+----------------------------------------
        Reporter:  Phyx-         |                Owner:  (none)
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:  8.6.1
       Component:  Compiler      |              Version:  8.4.3
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+----------------------------------------
Description changed by simonpj:

Old description:

> These tests have way too high allocation counts.
>
> {{{
> bytes allocated value is too high:
>     Expected    T12425(optasm) bytes allocated: 139100464 +/-5%
>     Lower bound T12425(optasm) bytes allocated: 132145440
>     Upper bound T12425(optasm) bytes allocated: 146055488
>     Actual      T12425(optasm) bytes allocated: 149370944
>     Deviation   T12425(optasm) bytes allocated:       7.4 %
> *** unexpected stat test failure for T12425(optasm)
>
> bytes allocated value is too high:
>     Expected    MultiLayerModules(normal) bytes allocated: 5619893176
> +/-10%
>     Lower bound MultiLayerModules(normal) bytes allocated: 5057903858
>     Upper bound MultiLayerModules(normal) bytes allocated: 6181882494
>     Actual      MultiLayerModules(normal) bytes allocated: 6693788656
>     Deviation   MultiLayerModules(normal) bytes allocated:       19.1 %
> *** unexpected stat test failure for MultiLayerModules(normal)
>
> bytes allocated value is too high:
>     Expected    T11303b(normal) bytes allocated: 54373936 +/-10%
>     Lower bound T11303b(normal) bytes allocated: 48936542
>     Upper bound T11303b(normal) bytes allocated: 59811330
>     Actual      T11303b(normal) bytes allocated: 62015072
>     Deviation   T11303b(normal) bytes allocated:     14.1 %
> *** unexpected stat test failure for T11303b(normal)
>
> bytes allocated value is too high:
>     Expected    T12234(optasm) bytes allocated: 79889200 +/-5%
>     Lower bound T12234(optasm) bytes allocated: 75894740
>     Upper bound T12234(optasm) bytes allocated: 83883660
>     Actual      T12234(optasm) bytes allocated: 91583520
>     Deviation   T12234(optasm) bytes allocated:     14.6 %
> *** unexpected stat test failure for T12234(optasm)
> }}}
>
> These are a bit too high for me to just blindly update them without
> knowing why.

New description:

 These tests are failing on Windows (only), with way too high allocation
 counts.  Quite when this started happening is not clear -- perhaps in the
 last couple of months.


 {{{
 bytes allocated value is too high:
     Expected    T12425(optasm) bytes allocated: 139100464 +/-5%
     Lower bound T12425(optasm) bytes allocated: 132145440
     Upper bound T12425(optasm) bytes allocated: 146055488
     Actual      T12425(optasm) bytes allocated: 149370944
     Deviation   T12425(optasm) bytes allocated:       7.4 %
 *** unexpected stat test failure for T12425(optasm)

 bytes allocated value is too high:
     Expected    MultiLayerModules(normal) bytes allocated: 5619893176
 +/-10%
     Lower bound MultiLayerModules(normal) bytes allocated: 5057903858
     Upper bound MultiLayerModules(normal) bytes allocated: 6181882494
     Actual      MultiLayerModules(normal) bytes allocated: 6693788656
     Deviation   MultiLayerModules(normal) bytes allocated:       19.1 %
 *** unexpected stat test failure for MultiLayerModules(normal)

 bytes allocated value is too high:
     Expected    T11303b(normal) bytes allocated: 54373936 +/-10%
     Lower bound T11303b(normal) bytes allocated: 48936542
     Upper bound T11303b(normal) bytes allocated: 59811330
     Actual      T11303b(normal) bytes allocated: 62015072
     Deviation   T11303b(normal) bytes allocated:     14.1 %
 *** unexpected stat test failure for T11303b(normal)

 bytes allocated value is too high:
     Expected    T12234(optasm) bytes allocated: 79889200 +/-5%
     Lower bound T12234(optasm) bytes allocated: 75894740
     Upper bound T12234(optasm) bytes allocated: 83883660
     Actual      T12234(optasm) bytes allocated: 91583520
     Deviation   T12234(optasm) bytes allocated:     14.6 %
 *** unexpected stat test failure for T12234(optasm)
 }}}

 These are a bit too high for me to just blindly update them without
 knowing why.

--

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15668#comment:3>
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