Re: no buffer space available

[Maarten Vink <vink@interstroom.nl>]

Op 27-mrt-2007, om 12:05 heeft Timur Irmatov het volgende geschreven:

> On 3/20/07, Maarten Vink <vink@interstroom.nl> wrote:
> > What's the output of /proc/slabinfo in a "normal" and "error"  
> > situation?
> > That would give you some indication of the amount of memory  
> > allocated for,
> > among other things, the ARP cache. Also, what kernel version are you
> > running?
>
> I have attached three files, slabinfo-bad.txt - it is contents of
> /proc/slabinfo when machine starts experiencing this errors again,
> slabinfo-fresh.txt - slabinfo just after reboot, slabinfo-other.txt -
> slabinfo on other server, that is running for three days..

According to these files, the arp cache contains 300 entries after  
the reboot, and over 2000 when your problems start. I'd recommend  
increasing the values in proc/sys//net/ipv4/neigh/default/gc-thresh  
even further; if that doesn't solve your problem try flushing the arp  
table when the problem starts, and see if that fixes things without  
rebooting.

Maarten