Messages in this thread | | | Date | Tue, 18 May 1999 21:40:57 +0200 (MEST) | From | Juergen Schmidt <> | Subject | Re: Bad apache perfomance wtih linux SMP |
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On Tue, 18 May 1999, Andi Kleen wrote:
> If you don't believe me :) you can verify it: > > csum_and_copy_from_user > ... > calls finally do_swap_page (same file) > and there at the end is: > unlock_kernel();
You convinced me, that it may happen anyway. What's still open is: is it really ok, that it happens. Perhaps we're just getting away with it, as long as it happens not too frequently -- but at least it looks stable until now. Tomorrow I'll know more :-)
bye, ju
Juergen Schmidt Redakteur/editor c't magazin PGP-Key available Verlag Heinz Heise GmbH & Co KG, Helstorferstr. 7, D-30625 Hannover EMail: ju@ct.heise.de - Tel.: +49 511 5352 300 - FAX: +49 511 5352 417
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