Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: kernel performance update - 2.6.14 | Date | Fri, 28 Oct 2005 17:42:54 -0700 |
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Felix Oxley wrote on Friday, October 28, 2005 5:29 PM > Something went horribly wrong with this test between 2.6.13 and > 2.6.13-git2 (it has never recovered): > > System: 4P Itanium > Test:Result Group 1 > Metric: VolcanoMark > Result: -3% -10% > Kernel: 2.6.13 vs 2.6.13-git2 > > Does anybody know the cause of this?
Search the archive, it was discussed here: http://marc.theaimsgroup.com/?l=linux-ia64&m=112683124124723&w=2
It is not because of changes in 2.6.13-git2. It would've shown on 2.6.13-rc1 when default hz rate was switched to 250. I happened to audit the system at that time and made the hz switch (from 1000 to 250 and the problem showed up.
More discussion here: http://marc.theaimsgroup.com/?l=linux-kernel&m=112854723926854&w=2
- Ken
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