Unreliability of the build system

[Simon Peyton-Jones]

T149 is a CSE test.  I think the CSE is now happening, but it's fragile.    It's fine that it happens, so perhaps we should record it as ok, and look again if it starts failing.

Simon

|  -----Original Message-----
|  From: ghc-devs-bounces at haskell.org [mailto:ghc-devs-bounces at haskell.org] On
|  Behalf Of Jan Stolarek
|  Sent: 25 June 2013 21:06
|  To: ghc-devs at haskell.org
|  Subject: Re: Unreliability of the build system
|  
|  T149 has been failing for a very long time (a few weeks at least). I also had
|  process007 fail.
|  
|  Janek
|  
|  Dnia wtorek, 25 czerwca 2013, Mateusz Kowalczyk napisał:
|  > On 25/06/13 15:43, Jan Stolarek wrote:
|  > > I just ran validation (once without any parameters and once with
|  > > --normal) and got no failures, except for some tests that always
|  > > fail. Looks like the problem may be solved.
|  > >
|  > > Janek
|  > >
|  > > Dnia wtorek, 25 czerwca 2013, Geoffrey Mainland napisał:
|  > >> On 06/24/2013 09:21 PM, Jan Stolarek wrote:
|  > >>>> My only claim was that I have a set of steps that can
|  > >>>> reliably reproduce an error on my system, not that these
|  > >>>> steps will reliably reproduce it on an arbitrary system,
|  > >>>> e.g., yours. Still, being able to reliably reproduce an
|  > >>>> error, even if only on one system, is *very* useful.
|  > >>>
|  > >>> just misunderstood your use of the word "reliable". Certainly
|  > >>> having
|  > >>
|  > >> this level of
|  > >>
|  > >>> reproducibility is very helpful in debugging, even if it's only
|  > >>> on one
|  > >>
|  > >> machine.
|  > >>
|  > >>>> So, to be clear, you see recache errors sporadically and for
|  > >>>> different sets of tests across different runs, and you are
|  > >>>> running validate with no extra arguments, single-threaded, on
|  > >>>> a Linux x86_64 system with an ext4 file system?
|  > >>>
|  > >>> Yes, except I would say "very often" instead of "sporadically".
|  > >>> I'm
|  > >>
|  > >> not sure about
|  > >>
|  > >>> single-threaded. I run validate without any parameters -
|  > >>> doesn't it
|  > >>
|  > >> use more then one thread in
|  > >>
|  > >>> this case?
|  > >>
|  > >> It looks like running validate without any parameters will use 2
|  > >> threads.
|  > >>
|  > >> I've pushed a fix (I hope) for this issue. Could you check and
|  > >> see if it's fixed for you now?
|  > >>
|  > >> Geoff
|  > >
|  > > _______________________________________________ ghc-devs mailing
|  > > list ghc-devs at haskell.org
|  > > http://www.haskell.org/mailman/listinfo/ghc-devs
|  >
|  > Which tests are these? I ran `./validate' yesterday on a stock (that
|  > is, I haven't made any changes to the source) and had about 5-7 tests
|  > fail and wasn't sure if this was a known issue or something I should
|  > be reporting.
|  
|  
|  
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