Messages in this thread | | | Date | Sat, 16 Aug 1997 12:17:26 +0200 (MET DST) | From | Ingo Molnar <> | Subject | Re: WriteThrough pageclearing, 2.1.50, anyone with a PPro? |
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> could someone with a PPro give this patch a try? [...]
thanks to Manuel J. Galan who tested the patch and found that if we do WriteThrough caching for page-clearing, we loose alot of performance:
> I have a PPro 200 SMP (two proccessors) and the results of kernel > compilation (_not_ in parallel mode) > > ------------------------------------------------------ > root@mgmux(26)[~/linux]# cat time_before_patch > real 7m1.107s > user 6m6.270s > sys 0m41.130s > root@mgmux(27)[~/linux]# cat time_after_patch > real 8m28.277s > user 6m5.400s > sys 2m18.470s > ------------------------------------------------------ > > results seem consistent (ie. repeated three times) ;-(
seems like the PPro string implementation for WB caching type is extremely effective, so we want to keep the current implementation :)
-- mingo
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