Messages in this thread | | | Date | Wed, 31 Dec 2003 00:46:43 +0100 | From | Roger Luethi <> | Subject | Re: 2.6.0 performance problems |
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On Tue, 30 Dec 2003 16:14:13 -0500, Thomas Molina wrote: > I also get 90+ percent iowait under 2.6 and 0 iowait in 2.4. I'm not sure > how the alleged suckiness of 2.6 paging fits into this. On this system
It is not alleged. It is real, but the badness is not universal. I was afraid I'd have to add another category, but fortunately it seems bk export matches qsbench: Major regressions neither between test2 and test3 nor between 2.4 and 2.6.
I'm still interested to learn whether 2.5.39 is a major regression (fixed later) for bk export, although that might have been due to the qs specific reference patterns, I haven't looked into it. At least for qsbench the spike is confirmed though, even with different parameters.
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