| To: | ralph+d@xxxxxxxxx, ralph@xxxxxxxxx |
|---|---|
| Subject: | Re: Route cache performance under stress |
| From: | "David S. Miller" <davem@xxxxxxxxxx> |
| Date: | Tue, 10 Jun 2003 08:49:40 -0700 (PDT) |
| Cc: | hadi@xxxxxxxxxxxxxxxx, xerox@xxxxxxxxxx, sim@xxxxxxxxxxxxx, fw@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx |
| In-reply-to: | <Pine.LNX.4.51.0306092006420.12038@ns.istop.com> |
| References: | <008001c32eda$56760830$4a00000a@badass> <20030609195652.E35696@shell.cyberus.ca> <Pine.LNX.4.51.0306092006420.12038@ns.istop.com> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
From: Ralph Doncaster <ralph@xxxxxxxxx> Date: Mon, 9 Jun 2003 20:32:48 -0400 (EDT) Lastly from the software side Linux doesn't seem to have anything like BSD's parameter to control user/system CPU sharing. Once my CPU load reaches 70-80%, I'd rather have some dropped packets than let the CPU hit 100% and end up with my BGP sessions drop. When packet (more specifically, software interrupt) processing reaches a certain level, we offload the work into process context. |
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