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From: David MENTRE <dmentre@linux-france.org>
To: "Török Edwin" <edwin+ml-ocaml@etorok.net>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Behaviour of an OCaml program: any possible GC improvement?
Date: Thu, 25 Oct 2012 12:06:30 +0200	[thread overview]
Message-ID: <CAC3Lx=aqo-RNC+1wLRQdaYPUR+0s7vCAifxE_UdcBt48d39FwQ@mail.gmail.com> (raw)
In-Reply-To: <5087C517.6000000@etorok.net>

Hello Edwin,

2012/10/24 Török Edwin <edwin+ml-ocaml@etorok.net>:
> You can try tuning the Gc parameters:
> http://caml.inria.fr/pub/docs/old-311/libref/Gc.html
>
> Try increasing minor_heap_size, and major_heap_increment and see if there is any improvement.
> Also look at Gc.stat() and see how many major collections and live words you have.

Olivier Andrieu made a similar suggestion and that helps!

2012/10/25 Olivier Andrieu:
> Try running your program with OCAMLRUNPARAM=s=256k !
> (A good value is about the size of the CPU L2 cache I'd say).

Thanks Olivier, your suggestion brings significant improvements!

On a particular example:
  * default: 2m14.142s
  * s=256k: 1m32.185s
  * s=1024k: 0m45.420s

Thanks!

Best regards,
d.

  reply	other threads:[~2012-10-25 10:07 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-24 10:08 David MENTRE
2012-10-24 10:33 ` John Whitington
2012-10-24 12:30   ` David MENTRE
2012-10-24 12:39     ` John Whitington
2012-10-24 12:45       ` Edgar Friendly
2012-10-24 12:53         ` John Whitington
2012-10-24 13:19       ` David MENTRE
2012-10-24 13:27         ` John Whitington
2012-10-24 13:38         ` Oliver Bandel
2012-10-24 14:30           ` David MENTRE
2012-10-24 15:09             ` David MENTRE
2012-10-24 16:07               ` AW: " Gerd Stolpmann
2012-10-24 17:23                 ` Martin Jambon
     [not found]               ` <1351094817.12207.11@samsung>
2012-10-25  6:48                 ` David MENTRE
2012-10-25  7:37                   ` David House
2012-10-24 10:38 ` Török Edwin
2012-10-25 10:06   ` David MENTRE [this message]
2012-10-25 10:16     ` Török Edwin
2012-10-25 10:19       ` David MENTRE
2012-11-07 11:52     ` David MENTRE

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