From: Jakub Jelinek <jakub@redhat.com>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: akpm@osdl.org, drepper@redhat.com, manfred@colorfullife.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] per-user signal pending and message queue limits
Date: Mon, 19 Apr 2004 18:49:40 -0400 [thread overview]
Message-ID: <20040419224940.GY31589@devserv.devel.redhat.com> (raw)
In-Reply-To: <20040419212810.GB10956@logos.cnet>
On Mon, Apr 19, 2004 at 06:28:10PM -0300, Marcelo Tosatti wrote:
> Andrew,
>
> Here goes the signal pending & POSIX mqueue's per-uid limit patch.
>
> Initialization has been moved to include/asm-i386/resource.h, as you suggested.
>
> The global mqueue limit has been increased to 256 (64 per user), and the global
> signal pending limit to 4096 (1024 per user).
>
> This has been well tested.
>
> If you are OK with it for inclusion (-mm) I'll generate the arch-dependant
> changes for the other architectures.
>
> Comments are welcome.
I wonder if it is a good idea to base mqueue limitation on the number of
message queues and not take into account how big they are.
64 message queues with 1 byte msgsize and 1 maxmsg is certainly quite
harmless and the system could have even more queues for such a user,
while 64 message queues with 16K msgsize (current default) and 40 maxmsg
(also default) eats ~ 40M of kernel memory.
Jakub
next prev parent reply other threads:[~2004-04-19 22:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-19 21:28 [PATCH] per-user signal pending and message queue limits Marcelo Tosatti
2004-04-19 22:49 ` Jakub Jelinek [this message]
2004-04-20 14:13 ` Marcelo Tosatti
2004-04-20 18:05 ` Manfred Spraul
2004-04-20 20:04 ` Andrew Morton
2004-04-20 23:13 ` Marcelo Tosatti
2004-04-20 23:34 ` Andrew Morton
2004-04-21 20:34 ` Marcelo Tosatti
2004-04-22 5:33 ` Manfred Spraul
2004-04-27 14:54 ` Marcelo Tosatti
2004-04-27 18:09 ` Manfred Spraul
2004-04-28 17:09 ` Marcelo Tosatti
2004-04-28 21:03 ` Andrew Morton
2004-04-29 1:33 ` Chris Wright
2004-04-29 12:17 ` Marcelo Tosatti
2004-04-29 19:58 ` Chris Wright
2004-05-06 0:08 ` Chris Wright
2004-05-06 12:09 ` Marcelo Tosatti
2004-05-06 12:32 ` Marcelo Tosatti
2004-05-07 0:56 ` Chris Wright
2004-04-19 22:59 ` Andrew Morton
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