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Andrew Walrond <andrew@walrond.org> wrote: >> So what is the difference between UP & SMP ?>Is there any indication in the system log that your userland (news?) software >was having problems? Not really. The load of the machine doesn't get that high as normal. On machines that feed usenet to us (usenet ==push system) i see that we grow "backlog" (we're not accepting usenet as fast as we should). >It may be entirely unrelated to your problem, but you >should anyway be aware of a nasty unresolved issue with all smp kernels >= >2.6.12 on smp x86_64 systems:>>http://bugzilla.kernel.org/show_bug.cgi?id=4851 Now that you mention it, i saw this in the log file when running the SMP kernel: newsgate kernel: mv[7024]: segfault at 00002aaaaabc3648 rip 00002aaaaaaac80e rsp 00007fffffdc17c0 error 4 It was only a oneliner, no further details. >If you have any indication of userland problems, you might try > echo 0 > /proc/sys/kernel/randomize_va_space >which much reduces (but seemingly does not completely remove) this issue for >most people. What i did try is the following (prior on other SMP kernels) I tried binding certain processes to a certain cpu. Did the same for the irq's. Just to see if it mattered. It didn't... >> A very confused>One of the major symptoms of this particular bug ;) I know, that's why a plee for help is _my_ only resort ;-) I do understand that at this level most people send in patches. Thanks for your reply! Will try the "echo 0" next time i boot a smp kernel. Danny - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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