lkml.org 
[lkml]   [2000]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: dst cache overflow
On Thu, Oct 12, 2000 at 12:39:09PM -0400, Ed Taranto wrote:
> Anyone out there have any further information or insight into this?

You can check the routes in the rtcache by using route --cache. Maybe
you can see a pattern.

>
> One thing that concerns me is that rt_garbage_collect will only make one
> pass through the main loop while in_interrupt() ... thus perhaps that is
> why it doesn't make it's goal of getting the cache entries below
> ip_rt_max_size. if i am under heavy load, perhaps i am spending too much
> time in_interrupt() which is why I can't trim down the cache sufficiently??

For a router/packet filter firewall rt_garbage_collect will only be called from
interrupt context. Normally a single sweep should be more than enough though.


> Or does this perhaps sound like a memory leak or something?

A common cause are port scans which cause generation of lots of routes
very quickly.

-Andi

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:41    [W:0.027 / U:1.564 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site