Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000

David S. Miller
2002-09-06T07:25:29Z

From: Andrew Morton <akpm@zip.com.au>
Date: Fri, 06 Sep 2002 00:36:04 -0700

"David S. Miller" wrote:
> NAPI is also not the panacea to all problems in the world.

Mala did some testing on this a couple of weeks back. It appears that
NAPI damaged performance significantly.

http://www-124.ibm.com/developerworks/opensource/linuxperf/netperf/results/july_02/netperf2.5.25results.htm

Unfortunately it is not listed what e1000 and core NAPI
patch was used. Also, not listed, are the RX/TX mitigation
and ring sizes given to the kernel module upon loading.

Robert can comment on optimal settings

Robert and Jamal can make a more detailed analysis of Mala's
graphs than I.