| To: | sim@xxxxxxxxxxxxx |
|---|---|
| Subject: | Re: Route cache performance under stress |
| From: | "David S. Miller" <davem@xxxxxxxxxx> |
| Date: | Tue, 10 Jun 2003 08:56:00 -0700 (PDT) |
| Cc: | ralph+d@xxxxxxxxx, hadi@xxxxxxxxxxxxxxxx, xerox@xxxxxxxxxx, fw@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx |
| In-reply-to: | <20030610015311.GB23009@netnation.com> |
| References: | <20030609195652.E35696@shell.cyberus.ca> <Pine.LNX.4.51.0306092006420.12038@ns.istop.com> <20030610015311.GB23009@netnation.com> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
From: Simon Kirby <sim@xxxxxxxxxxxxx> Date: Mon, 9 Jun 2003 18:53:12 -0700 Your CPU use is quite a bit higher than ours. Yeah, but his faster cpu is all being burnt to a crisp doing PIO accesses to the 3c59x card. I found that once NAPI was happening, userspace seemed to get a fairly decent amount of time. Unfortunately, NAPI won't help him with the current way the 3c59x driver works. It needs to provide a way to use MEM I/O before NAPI would start to be of use to him. |
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