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SubjectRe: Q: why _less_ performance on machine with SMP then with UP kernel ?
Date
On Wednesday 14 September 2005 07:16, Danny ter Haar wrote:
>
> 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.
>

Almost certainly due to bug 4851. You _really_ do not want to be using 2.6.12+
smp kernels on your hardware until this is sorted out. Stick to 2.6.11.12

I think this bug is going to bite a _lot_ of amd64 smp and dual core people as
they/distros start upgrading to these newer kernels.

Andrew/Linus: you might consider including a warning in kernel release
messages until this problem gets resolved, since it affects userland in such
an unpredictable way and we have a good handle on which systems it affects
(smp AMD64)

Andrew Walrond
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