lkml.org 
[lkml]   [2001]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: %u-order allocation failed
only 4096 processes, sounds low to me (I realize that some of my configs
are not typical, but this isn't that unusual on servers)

does this limit go up if you raise the max number of processes/threads?

David Lang

On Tue, 9 Oct 2001, Mikulas Patocka wrote:

> Date: Tue, 9 Oct 2001 00:21:04 +0200 (CEST)
> From: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
> To: Alan Cox <alan@lxorguk.ukuu.org.uk>
> Cc: Rik van Riel <riel@conectiva.com.br>,
> Krzysztof Rusocki <kszysiu@main.braxis.co.uk>, linux-xfs@oss.sgi.com,
> linux-kernel@vger.kernel.org
> Subject: Re: %u-order allocation failed
>
> On Sun, 7 Oct 2001, Alan Cox wrote:
>
> > > The difference between memory and vmalloc space is this: you fill up the
> > > whole memory with cache => memory fragments. You don't fill up the whole
> > > vmalloc space with anything => vmalloc space doesn't fragment.
> >
> > vmalloc space fragments. You fragment address space rather than pages thats
> > all. Same problem
>
> If you have more than half of virtual space free, you can always find two
> consecutive free pages. Period.
>
> You can fill up half of virtual space if you start 4096 processes or load
> many modules of total size 32M. Is it clear? Do you realize that no one
> will ever hit this limit in typical linux configuration?
>
> Mikulas
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:05    [W:0.086 / U:3.528 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site