From: Jon Harrop <jonathandeanharrop@googlemail.com>
To: "'Fabrice Le Fessant'" <Fabrice.Le_fessant@inria.fr>
Cc: <caml-list@inria.fr>
Subject: RE: [Caml-list] Efficient OCaml multicore -- roadmap?
Date: Tue, 19 Apr 2011 23:47:48 +0100 [thread overview]
Message-ID: <022401cbfee3$d00486e0$700d94a0$@ffconsultancy.com> (raw)
In-Reply-To: <4D8C944A.9060601@inria.fr>
Fabrice wrote:
> Well, Java has fully multi-threaded garbage collection, so there is no point that it
> is possible to do it.
>
> The problem is that it has a cost, and the cost is a huge slowdown on mono-
> threaded programs.
Lucas says "zero". You say "huge". Can we do a better job of quantifying this? Where do you believe the slowdown would come from? Given that GC intensive OCaml programs can spend 30% of their time in the GC, do you not think it might be possible to improve performance by exploiting more cores? Can you give example code that you would expect to be adversely affected the most by a multi-threaded runtime?
Cheers,
Jon.
next prev parent reply other threads:[~2011-04-19 22:48 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2054357367.219171.1300974318806.JavaMail.root@zmbs4.inria.fr>
2011-03-24 23:13 ` Fabrice Le Fessant
2011-03-25 0:23 ` [Caml-list] " Sylvain Le Gall
2011-03-25 9:55 ` [Caml-list] " Alain Frisch
2011-03-25 11:44 ` Gerd Stolpmann
[not found] ` <1396338209.232813.1301046980856.JavaMail.root@zmbs4.inria.fr>
2011-03-25 10:23 ` Fabrice Le Fessant
2011-03-25 12:07 ` Gerd Stolpmann
2011-04-16 12:12 ` Jon Harrop
2011-03-25 10:51 ` Hugo Ferreira
2011-03-25 12:25 ` Gerd Stolpmann
2011-03-25 12:58 ` Hugo Ferreira
[not found] ` <341494683.237537.1301057887481.JavaMail.root@zmbs4.inria.fr>
2011-03-25 13:10 ` Fabrice Le Fessant
2011-03-25 13:41 ` Dario Teixeira
2011-03-30 18:12 ` Jon Harrop
2011-03-25 15:44 ` Hugo Ferreira
2011-03-25 18:24 ` Martin Jambon
2011-03-25 19:19 ` Hugo Ferreira
2011-03-25 20:26 ` Gerd Stolpmann
2011-03-26 9:11 ` Hugo Ferreira
2011-03-26 10:31 ` Richard W.M. Jones
2011-03-30 16:56 ` Jon Harrop
2011-03-30 19:24 ` Richard W.M. Jones
2011-04-20 21:44 ` Jon Harrop
2011-04-19 9:57 ` Eray Ozkural
2011-04-19 10:05 ` Hugo Ferreira
2011-04-19 20:26 ` Gerd Stolpmann
2011-04-20 7:59 ` Hugo Ferreira
2011-04-20 12:30 ` Markus Mottl
2011-04-20 12:53 ` Hugo Ferreira
2011-04-20 13:22 ` Markus Mottl
2011-04-20 14:00 ` Edgar Friendly
2011-04-19 22:49 ` Jon Harrop
2011-03-30 17:02 ` Jon Harrop
2011-04-20 19:23 ` Jon Harrop
2011-04-20 20:05 ` Alexy Khrabrov
2011-04-20 23:00 ` Jon Harrop
[not found] ` <76544177.594058.1303341821437.JavaMail.root@zmbs4.inria.fr>
2011-04-21 7:48 ` Fabrice Le Fessant
2011-04-21 8:35 ` Hugo Ferreira
2011-04-23 17:32 ` Jon Harrop
2011-04-21 9:09 ` Alain Frisch
[not found] ` <799994864.610698.1303412613509.JavaMail.root@zmbs4.inria.fr>
2011-04-22 8:06 ` Fabrice Le Fessant
2011-04-22 9:11 ` Gerd Stolpmann
2011-04-23 10:17 ` Eray Ozkural
2011-04-23 13:47 ` Alexy Khrabrov
2011-04-23 17:39 ` Eray Ozkural
2011-04-23 20:18 ` Alexy Khrabrov
2011-04-23 21:18 ` Jon Harrop
2011-04-24 0:33 ` Eray Ozkural
2011-04-28 14:42 ` orbitz
2011-04-23 19:02 ` Jon Harrop
2011-04-22 9:44 ` Vincent Aravantinos
[not found] ` <20110421.210304.1267840107736400776.Christophe.Troestler+ocaml@umons.ac.be>
2011-04-21 19:53 ` Hezekiah M. Carty
2011-04-22 8:34 ` Alain Frisch
2011-04-21 10:09 ` Philippe Strauss
2011-04-23 17:44 ` Jon Harrop
2011-04-23 17:05 ` Jon Harrop
2011-04-20 20:30 ` Gerd Stolpmann
2011-04-20 23:33 ` Jon Harrop
2011-03-25 20:27 ` Philippe Strauss
2011-04-19 22:47 ` Jon Harrop [this message]
[not found] ` <869445701.579183.1303253283515.JavaMail.root@zmbs4.inria.fr>
2011-04-20 9:25 ` Fabrice Le Fessant
2011-03-25 18:45 ` Andrei Formiga
2011-03-30 17:00 ` Jon Harrop
2011-04-13 3:36 ` Lucas Dixon
2011-04-13 13:01 ` Gerd Stolpmann
2011-04-13 13:09 ` Lucas Dixon
2011-04-13 23:04 ` Goswin von Brederlow
2011-04-16 13:54 ` Jon Harrop
2011-03-24 13:44 Alexy Khrabrov
2011-03-24 14:57 ` Gerd Stolpmann
2011-03-24 15:03 ` Joel Reymont
2011-03-24 15:28 ` Guillaume Yziquel
2011-03-24 15:48 ` Gerd Stolpmann
2011-03-24 15:38 ` Gerd Stolpmann
2011-03-25 19:49 ` Richard W.M. Jones
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