Messages in this thread | | | Date | Tue, 27 Jul 2004 00:28:04 +0300 (EEST) | From | Pasi Sjoholm <> | Subject | Re: ksoftirqd uses 99% CPU triggered by network traffic (maybe RLT-8139 related) |
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On Mon, 26 Jul 2004, Stephen Hemminger wrote:
>>>> I haven't been able to reproduce this with normal www-browsing or >>>> ssh-connections but it's always reproducible when my eth0 is under heavy >>>> load. >>> I guess it can be reproduced even if the binary (nvidia ?) module is never >>> loaded after boot, right ?
>> After 24 hours of hard working I can answer yes to this question. >> Now I can reproduce this from 2 to 15 minutes with 2 cp-processes from >> samba->workstation->nfs, some software building with make -j 3, playing >> some mp3 via nfs to notice when kernel goes down.. =) and so on..
>> After that ksoftirqd takes almost all the cpu-time and the network is not >> working at all.
> Is network traffic still coming in?
At least tcpdump doesn't say anything, I can only see only arp-packets which my computer (not other computer's arp-packets) has made but no response to those.
> or perhaps there is a network packet that causes some soft irq to go > into an infinite loop. The recent iptables bug with ip options would be > an example.
That would make sense but Robert Olsson had some knowledge of this and said that this issue is probably the same that they have discussed in OSL.
-- Pasi Sjöholm
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