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From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Faking concurrency using Unix forks and pipes
Date: Wed, 30 May 2007 09:54:32 +0100	[thread overview]
Message-ID: <200705300954.32784.jon@ffconsultancy.com> (raw)
In-Reply-To: <20070530181300.d4179bca.mle+ocaml@mega-nerd.com>

On Wednesday 30 May 2007 09:13:00 Erik de Castro Lopo wrote:
> How much does a concurrent GC actually buy in comparison to
> multiple processes each with their own GC and a robust way
> of passing data between processes?

1. Shared memory and locks should be much faster for synchronization than 
marshalling between processes.

2. Forking results in multiple GCs redundantly traversing the same heap and, 
worst case, it may end up copying the entire heap in the child process in 
order to deallocate it.

-- 
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
OCaml for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists/?e


  parent reply	other threads:[~2007-05-30  9:00 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-30  3:42 Jon Harrop
2007-05-30  4:10 ` [Caml-list] " Erik de Castro Lopo
2007-05-30  4:12 ` Jonathan Bryant
2007-05-30  9:45   ` Benedikt Grundmann
2007-05-30  7:02 ` Oliver Bandel
2007-05-30  7:31   ` Jon Harrop
2007-05-30 16:22     ` David Teller
2007-05-30  7:34   ` Loup Vaillant
2007-05-30  8:02     ` Jon Harrop
2007-05-30  8:13       ` Erik de Castro Lopo
2007-05-30  8:30         ` Loup Vaillant
2007-05-30  8:32           ` Loup Vaillant
2007-05-30  8:50             ` Jon Harrop
2007-05-30 12:13               ` Richard Jones
2007-05-30  8:54         ` Jon Harrop [this message]
2007-05-30  9:56           ` Mattias Engdegård
2007-05-30 12:15           ` Richard Jones
2007-05-30 17:46           ` Pablo Polvorin
2007-05-30 19:14           ` Erik de Castro Lopo
2007-05-30  7:13 ` Florian Hars
2007-05-30 11:31   ` Gerd Stolpmann
2007-05-30  8:40 ` Luc Maranget
2007-05-30  9:10   ` Erik de Castro Lopo
2007-05-30  9:25     ` Erik de Castro Lopo
2007-05-30  9:25       ` Jon Harrop
2007-05-30  9:41         ` Joel Reymont
2007-05-30 16:05         ` David Teller
2007-05-30  9:21   ` Joel Reymont
2007-05-30 16:10   ` David Teller
2007-05-30  9:52 ` Thomas Fischbacher
2007-05-30 12:03 ` Richard Jones
2007-05-30 16:03 ` Granicz Adam
2007-05-30 22:09   ` Jon Harrop
     [not found] <5F7D2956-2B0A-465A-8AC2-06D7EDC457F9@valdosta.edu>
2007-05-30 19:44 ` Fwd: " Jonathan Bryant
2007-05-30 19:57   ` Erik de Castro Lopo
2007-05-30 20:05     ` Jonathan Bryant
2007-05-30 22:08       ` Jon Harrop

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