kernel: dst cache overflow

[Alexander Dalloz]

Am Mi, den 06.07.2005 schrieb André Cruz um 15:21:

> I have a router running FC 2 with kernel 2.6.10-1.770_FC2.

That kernel has security issues.

> Yesterday my network went down and a lot of "dst cache overflow"
> appeared in my console. I then increased
> my /proc/sys/net/ipv4/route/max_size from 8192 to 16384 and my network
> started to work again...
> 
> The problem is that dst_cache keeps increasing:
> [root at saf113 root]# cat /proc/slabinfo |grep ip_dst_ca
> ip_dst_cache 9210 9210 256 15 1 : tunables 120 60 0 : slabdata 614 614 0
> 
> This way the problem will repeat itself... Is there a solution to this?
> Is this a known bug?

> André

I don't understand why your proc value is that small.

$ cat /proc/sys/net/ipv4/route/max_size
131072

This is on my unmodified FC2 with the rebuild FC3 kernel 2.6.11-1.35.

Do you constantly run P2P filesharing? That is a typical reason too for
stopping SOHO hardware router to work as they have limited NAT
capacities.

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.35_FC2smp 
Serendipity 16:33:29 up 10 days, 23:25, load average: 0.13, 0.13, 0.06 
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