| To: | jamal <hadi@xxxxxxxxxx> |
|---|---|
| Subject: | Re: _High_ CPU usage while routing (mostly) small UDP packets |
| From: | Karsten Desler <kdesler@xxxxxxxxxx> |
| Date: | Tue, 7 Dec 2004 05:02:35 +0100 |
| Cc: | Bernd Eckenfels <ecki-news2004-05@xxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, netdev@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx |
| In-reply-to: | <1102390241.1093.59.camel@xxxxxxxxxxxxxxxx> |
| References: | <20041206224107.GA8529@xxxxxxxxxx> <E1CbSf8-00047p-00@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20041207002012.GB30674@xxxxxxxxxxxxxxxxxxxx> <1102387595.1088.48.camel@xxxxxxxxxxxxxxxx> <20041207025456.GA525@xxxxxxxxxx> <1102389533.1089.51.camel@xxxxxxxxxxxxxxxx> <20041207032438.GA7767@xxxxxxxxxx> <1102390241.1093.59.camel@xxxxxxxxxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.5.6+20040722i |
* jamal wrote: > Beats me. Make sure it boots NAPI. Also if you can turn off ITR; intel > loves to turn on that silly feature. ITR was in fact activated. I think i've disabled it now (e1000.InterruptThrottleRate=0 in the kernel cmdline). And as I'm reading the e1000 code, there is no way to enable/disable NAPI without a recompile. So the fact that ethtool spat out -NAPI in the version string means that NAPI is actually used. - Karsten |
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