| To: | "David S. Miller" <davem@xxxxxxxxxx> |
|---|---|
| Subject: | Re: Info: NAPI performance at "low" loads |
| From: | Jeff Garzik <jgarzik@xxxxxxxxxxxxxxxx> |
| Date: | Tue, 17 Sep 2002 17:54:42 -0400 |
| Cc: | akpm@xxxxxxxxx, manfred@xxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx |
| Organization: | MandrakeSoft |
| References: | <3D879F59.6BDF9443@xxxxxxxxx> <20020917.142635.114214508.davem@xxxxxxxxxx> <3D87A264.8D5F3AD2@xxxxxxxxx> <20020917.143947.07361352.davem@xxxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 |
David S. Miller wrote: Any driver should be able to get the NAPI overhead to max out at 2 PIOs per packet. Just to pick nits... my example went from 2 or 3 IOs [depending on the presence/absence of a work loop] to 6 IOs. Feel free to re-read my message and point out where an IO can be eliminated...
Jeff
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