Messages in this thread | | | Date | Mon, 29 Jan 2001 21:40:19 +0100 | From | Manfred Spraul <> | Subject | Re: [patch] 2.4.0, 2.4.0-ac12: APIC lock-ups |
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"Maciej W. Rozycki" wrote: > > I'll implement an 82489DX update in a few days, but for now I'd like > everyone interested to test the following patch as much as possible. It > applies to 2.4.0, 2.4.0-ac12 and 2.4.1-pre11 cleanly. > I'm not totally convinced that this fixes all problems:
No lockup, and but a slightly increased packet loss: every few minutes a block of 5-10 packets is lost. Cpu load is low (~30%), I'm running 3 concurrent bw_tcp, the io apic computer is the 'server'.
IIRC my original patch caused a far higher packet loss, perhaps because it's slower? (you wrote something about 2 r/w accesses).
Are you sure that this really fixed the bug? Remember that switching the 'trigger mode' bit will revive the io apic.
It's possible that * the io apic still locks up. * but now {en,dis}able_irq() switches the 'trigger mode' bit, and thus resets the io apic after a few msec --> a few lost packets.
It's far better than before, but I assume the bug is hidden, not fixed.
I'll make additional tests.
Send the patch to Linus - it makes ne2k cards usable with 2.4+io apic.
-- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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