Messages in this thread | | | Date | Wed, 28 Apr 2004 19:11:54 -0700 | From | Andrew Morton <> | Subject | Re: Linux 2.6.6-rc3 |
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Craig Thomas <craiger@osdl.org> wrote: > > I have taken a quick look at the results and I see no degredations > from 2.6.6-rc2 and the performance looks much better than the > 2.6.5 kernel for dbt3 (as reported earlier).
The 70% dbt3 improvement is extremely fishy. Yes, there are things in 2.6.6-rc3 which could improve database workloads by that much, but dbt3 doesn't appear to be using them.
Again, the vmstat traces indicate that after a run on 2.6.6-rc3 we have a full gigabyte less used pagecache than with 2.6.5. In both cases there is still a lot of free memory. Which tends to indicate that the -rc3 run was, for some reason, not an equivalent workload - it's using a smaller dataset.
I'd suggest that you double-check these results, try and work out why the -rc3 run is touching less data. Maybe go back and redo the 2.6.5 test? - 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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