From: Markus Mottl <markus.mottl@gmail.com>
To: Nathaniel Gray <n8gray@gmail.com>
Cc: ocaml <caml-list@inria.fr>
Subject: Re: [Caml-list] Cost of register_global_root (was: Stopping a value from getting GC'd)
Date: Wed, 17 Aug 2005 23:57:13 -0400 [thread overview]
Message-ID: <f8560b8050817205775375b11@mail.gmail.com> (raw)
In-Reply-To: <aee06c9e050817183110b38537@mail.gmail.com>
On 8/17/05, Nathaniel Gray <n8gray@gmail.com> wrote:
> One thing that the FM doesn't mention is how expensive it is to
> register a global root. Can I register thousands of them or will
> there be performance problems?
There is a severe performance penalty for registering many thousands
of roots as I have seen in one of our applications. AFAIK, they are
scanned at each minor collection. This will drive up CPU-usage even
if your program doesn't do much otherwise. Maybe the GC could be
improved in that area.
Regards,
Markus
--
Markus Mottl http://www.ocaml.info markus.mottl@gmail.com
next prev parent reply other threads:[~2005-08-18 3:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-17 4:12 [Caml-list] Stopping a value from getting GC'd Jonathan Roewen
2005-08-17 5:36 ` Bardur Arantsson
2005-08-18 1:31 ` Cost of register_global_root (was: Stopping a value from getting GC'd) Nathaniel Gray
2005-08-18 2:40 ` [Caml-list] Cost of register_global_root Alain Frisch
2005-08-18 5:19 ` Nathaniel Gray
2005-08-18 3:57 ` Markus Mottl [this message]
2005-08-18 17:13 ` [Caml-list] Cost of register_global_root (was: Stopping a value from getting GC'd) skaller
2005-08-18 10:51 ` Richard Jones
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