Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 | From | Lee Revell <> | Date | Thu, 02 Sep 2004 18:15:08 -0400 |
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On Thu, 2004-09-02 at 18:14, Ingo Molnar wrote: > * Lee Revell <rlrevell@joe-job.com> wrote: > > > > i've given up on the netdev_backlog_granularity approach, and as a > > > replacement i've modified specific network drivers to return at a safe > > > point if softirq preemption is requested. > > > > Makes sense, netdev_max_backlog never made a difference on my system > > (via-rhine driver). > > via-rhine does RX processing from the hardirq handler, this codepath is > harder to break up. The NAPI ->poll functions used by e100 and 8193too > are much easier to break up because RX throttling and re-trying is a > basic property of NAPI. >
What I meant was, I did not consider the latencies from via-rhine to be a problem. The other posters reported 300-500 usec latencies in the network driver, I did not see this.
Lee
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