Messages in this thread | | | Subject | Re: SATA-performance part 2 | From | Arjan van de Ven <> | Date | Wed, 14 Feb 2007 18:25:11 +0100 |
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> after deinstallation of oprofile and only soft reboots (no hardware power off) > these values STAYED (linux 48 MB/s) !! even for a brand new installation of > OpenSuSE 10.2 to another partition! > After a hardware power off everything was again like before (26 MB/s). > > So now the interesting questions to me are: > > 1. What is oprofile doing with my system ?? Especially what is been changed > that remains a reboot ??
this is odd. (but encouraging).. the one thing I can imagine oprofile doing is disabling the nmi_watchdog... you can simulate the same effect by passing "nmi_watchdog=0" on the kernel commandline (and there's something in /proc/sys as well to disable it at runtime)
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