Thanks alan.
But I already patched with 'kernel-ss990203-2.2.1'.
(Before upgrading with above patch, network problem occurrs at
non-busy time)
After upgrading with patch, it can handle about 2-3k pps.
But it occurs the same problem on >4k pps.
Anyway, I'll upgrade with kernel 2.2.2 + kernel-ss990301-2.2.2.
Alan Cox wrote:
>
> > When busy network load, there are no buffer space.
> > It cause network problem, although 'vmstat' shows a lot of free
> > mem/swap/cpu idle.
> >
> > send_msg: sendto ([xxx.xxx.xxx.xxx].xxxx): No buffer space available
> >
> > How to increase network buffer for resolving above problems ?
>
> Its not a tuning problem. Its a bug. You can get the network patches from
> ftp.inr.ac.ru that fix this.
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