| To: | akpm@xxxxxxxxxx |
|---|---|
| Subject: | Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000 |
| From: | "David S. Miller" <davem@xxxxxxxxxx> |
| Date: | Fri, 06 Sep 2002 00:22:53 -0700 (PDT) |
| Cc: | Martin.Bligh@xxxxxxxxxx, hadi@xxxxxxxxxx, tcw@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, niv@xxxxxxxxxx, Robert.Olsson@xxxxxxxxxxx |
| In-reply-to: | <3D785AE4.A7E3DF2D@xxxxxxxxxx> |
| References: | <18563262.1031269721@[10.10.2.3]> <20020905.235159.128049953.davem@xxxxxxxxxx> <3D785AE4.A7E3DF2D@xxxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
From: Andrew Morton <akpm@xxxxxxxxxx> 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. |
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