Thread (21 messages) flat view 21 messages, 7 authors, 2004-12-08

Re: _High_ CPU usage while routing (mostly) small UDP packets

From: jamal <hidden>
Date: 2004-12-07 13:04:40
Also in: lkml

On Tue, 2004-12-07 at 07:50, Karsten Desler wrote:
Currently I'm having problems capturing packets with tcpdump (lots of
"packets dropped by kernel") which indicates to me that there's
genuinely not much (enough) idle time sitting around.
Ah, more hints. So you are not trying to forward - rather just packet
capturing?
Are you using a tcpdump patched with mmaped packet socket?

The 230-240Kpps you are reporting as a capture dont seem as unreasonable
as i thought then. Neither would the CPU use.

cheers,
jamal
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