[GHC] #13930: Cabal configure

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[GHC] #13930: Cabal configure

GHC - devs mailing list
#13930: Cabal configure
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 `cabal configure` apparently has a space leak when compiled with GHC HEAD
 but not 8.0. It's not clear whether this is really a GHC regression yet,
 but here it is certainly GHC version-specific.

 See https://github.com/haskell/cabal/issues/4589

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930>
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Re: [GHC] #13930: Cabal configure

GHC - devs mailing list
#13930: Cabal configure
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 Thankfully it seems like 8.2 isn't affected by this.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:1>
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Re: [GHC] #13930: Cabal configure

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 Unfortunately I can't easily bisect this due to `Cabal` issue
 [https://github.com/haskell/cabal/issues/4509|#4509]

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:2>
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Re: [GHC] #13930: Cabal configure

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * priority:  normal => high
 * failure:  None/Unknown => Runtime performance bug
 * milestone:   => 8.4.1


Comment:

 The first bad commit here is,
 {{{
 commit 751996e90a964026a3f86853338f10c82db6b610
 Author: Simon Peyton Jones <[hidden email]>
 Date:   Fri Apr 7 17:10:07 2017 +0100

     Kill off complications in CoreFVs

     When doing type-in-type, Richard introduce some substantial
     complications in CoreFVs, gathering types and free variables
     of type.  In Trac #13160 we decided that this complication was
     unnecessary, so this patch removes it.

     ...
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:3>
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Re: [GHC] #13930: Cabal configure regresses in runtime (was: Cabal configure)

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in runtime
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:4>
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Re: [GHC] #13930: Cabal configure regresses in space/time (was: Cabal configure regresses in runtime)

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:5>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * related:   => #13982


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:6>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by bgamari):

 My apologies, Simon: I believe I was mistaken when I said this required
 profiling to reproduce.

 This can be reproduced with current GHC `master` with,
 {{{
 $ git clone git://github.com/haskell/cabal
 $ cd cabal
 $ ghc-pkg unregister Cabal
 $ cabal install Cabal/ --allow-newer
 $ cabal install cabal-install/ --allow-newer --only-dependencies
 $ cd cabal-install
 $ cabal build
 }}}

 The `unregister Cabal` bit is necessary for some GHC versions due to Cabal
 bug [[https://github.com/haskell/cabal/issues/4509|#4509]].

 For the record, a quick profile reveals that most of the allocations seem
 to be coming from `Distribution.ParseUtils` and
 `Distribution.Compat.ReadP` (both in `Cabal`).

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:7>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by osa1):

 I can't reproduce this with ghc 8.5.20180115 and cabal HEAD. configure
 uses about the same (and very little) amount of memory.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:8>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * milestone:  8.4.1 => 8.4.2


Comment:

 What is the status of this, osa1? Were you able to reproduce this?

 Regardless, it's unlikely this will be fixed for 8.4.1..

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:9>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:  invalid           |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 It seems that Omer was really unable to reproduce this; odd. Closing.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:10>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by hvr):

 * status:  closed => new
 * resolution:  invalid =>


Comment:

 This unfortunately resurfaced in
 https://github.com/haskell/cabal/issues/5201 and is unfortunately quite
 easy to reproduce to the point of blocking `cabal` on GHC 8.4.1

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:11>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by hvr):

 Ben asked me to provide the STG dumps of the module containing the `accum`
 function;  original code as well the variant w/ the
 `ReadPackageIndexStrict` branch commented out respectively; I hadn't had
 time to look at those myself yet, so here they're unabridged:

 - https://gist.github.com/9fe0cc59b4414351ce0e03c21a068172 (original)

 - https://gist.github.com/759e338c8d841de9b3fb47d892fac398 (commented out
 `ReadPackageIndexStrict`)

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:12>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * owner:  (none) => tdammers
 * priority:  high => highest


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:13>
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Re: [GHC] #13930: Cabal configure regresses in space/time

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In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by hvr):

 * related:  #13982 => #13982, #5129


Comment:

 Alex Biehl just pointed out this may be related to the rather old #5129
 ticket

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:14>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by osa1):

 This is indeed #5129. Adding `{-# NOINLINE evaluate #-}` fixes both this
 and #5129.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:15>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by tdammers):

 Sounds plausible. I managed to reproduce on GHC HEAD, and running on a
 machine with a HDD clearly shows excessive disk I/O. So my hypothesis so
 far has been that overly enthusiastic inlining might be the culprit, and
 if `{-# NOINLINE evaluate #-}` fixes it, then that would be consistent
 with that.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:16>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by tdammers):

 I suggest parking this for now, let's first see where we end up with
 #5129.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:17>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by tdammers):

 Check if spj's patch on #5129 does indeed fix this one too.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:18>
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Re: [GHC] #13930: Cabal configure regresses in space/time

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#13930: Cabal configure regresses in space/time
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  tdammers
            Type:  bug               |               Status:  infoneeded
        Priority:  highest           |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13982, #5129     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * status:  new => infoneeded


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13930#comment:19>
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