[commit: ghc] master: Bump haddock.base max_bytes_used (8df7fea)

[Edward Z. Yang]

Yes, on my box, this test is now failing (because the stat is too good):

    Expected    haddock.base(normal) max_bytes_used: 127954488 +/-10%
    Lower bound haddock.base(normal) max_bytes_used: 115159039 
    Upper bound haddock.base(normal) max_bytes_used: 140749937 
    Actual      haddock.base(normal) max_bytes_used: 113167424 
    Deviation   haddock.base(normal) max_bytes_used:     -11.6 %

Cheers,
Edward

Excerpts from Simon Peyton Jones's message of 2014-08-04 08:21:50 +0100:
> Ha.  max_bytes_used is vulnerable to exactly when gc strikes, so I'm disinclined to get stressed about this.  I was mis-reading it as bytes-allocated.  Interestingly it doesn't happen for me.
> 
> Simon
> 
> | -----Original Message-----
> | From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of
> | Joachim Breitner
> | Sent: 01 August 2014 22:27
> | To: ghc-devs at haskell.org
> | Subject: Re: [commit: ghc] master: Bump haddock.base max_bytes_used
> | (8df7fea)
> | 
> | Hi,
> | 
> | 
> | Am Freitag, den 01.08.2014, 20:28 +0000 schrieb Simon Peyton Jones:
> | > Urk.  It's quite surprising that this particular change would
> | increase allocation significantly.
> | > I wonder whether it just pushed it over the threshold.
> | 
> | I’m confident it was not just that:
> | 
> | ~/logs $ fgrep 'Deviation   haddock.base(normal) max_bytes_used'  $(cd
> | ghc-master; git log --oneline --first-parent
> | db19c665ec5055c2193b2174519866045aeff09a..HEAD | cut -d\  -f1| (cd ..;
> | while read x ; do test -e $x.log && echo $x.log; done) |tac )|tail -n
> | 25
> | 6fa6caa.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 2.2 %
> | a0ff1eb.log:    Deviation   haddock.base(normal) max_bytes_used:      -
> | 1.0 %
> | 0be7c2c.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 2.2 %
> | dc7d3c2.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 2.2 %
> | 7381cee.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 2.2 %
> | fe2d807.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 2.2 %
> | bfaa179.log:    Deviation   haddock.base(normal) max_bytes_used:      -
> | 0.9 %
> | 1ae5fa4.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | c97f853.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | fd47e26.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | bdf0ef0.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.1 %
> | 58ed1cc.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | 1c1ef82.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | 52188ad.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | 3b9fe0c.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | 6483b8a.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | 9d9a554.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | 028630a.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | aab5937.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | 6c06db1.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.0 %
> | 2989ffd.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.1 %
> | d4d4bef.log:    Deviation   haddock.base(normal) max_bytes_used:
> | 11.2 %
> | 8df7fea.log:    Deviation   haddock.base(normal) max_bytes_used:      -
> | 0.0 %
> | 3faff73.log:    Deviation   haddock.base(normal) max_bytes_used:      -
> | 0.0 %
> | 02975c9.log:    Deviation   haddock.base(normal) max_bytes_used:      -
> | 0.1 %
> | 
> | 
> | (If this were a bytes_allocated test I could also show you nice graphs
> | like http://ghcspeed-nomeata.rhcloud.com/timeline/?exe=2&base=2%
> | 2B68&ben=tests%2Falloc%2FT6048&env=1&revs=50&equid=on but I didn’t add
> | the max_bytes_used tests yet.)
> | 
> | Interestingly, bytes_allocated did not change a bit!
> | 
> | Greetings,
> | Joachim
> | 
> | --
> | Joachim “nomeata” Breitner
> |   mail at joachim-breitner.de • http://www.joachim-breitner.de/
> |   Jabber: nomeata at joachim-breitner.de  • GPG-Key: 0xF0FBF51F
> |   Debian Developer: nomeata at debian.org
>