lkml.org 
[lkml]   [2001]   [Aug]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [resent PATCH] Re: very slow parallel read performance
On Sun, 26 Aug 2001, Daniel Phillips wrote:
> On August 26, 2001 08:39 pm, Rik van Riel wrote:
> > On Sun, 26 Aug 2001, Daniel Phillips wrote:
> >
> > > There's an obvious explanation for the high loadavg people are seeing
> > > when their systems go into thrash mode: when free is exhausted, every
> > > task that fails to get a block in __alloc_pages will become
> > > PF_MEMALLOC and start scanning.
> >
> > If you ever tested this, you'd know this is not true.
>
> Look at this, supplied by Nicolas Pitre in the thread "What version of
> the kernel fixes these VM issues?":

His kernel is running completely out of memory, with no
swap space configured.

This is very different from a system which is thrashing
because of the IO load.

regards,

Rik
--
IA64: a worthy successor to i860.

http://www.surriel.com/ http://distro.conectiva.com/

Send all your spam to aardvark@nl.linux.org (spam digging piggy)

-
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 12:58    [W:0.130 / U:0.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site