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Re: [libvirt] Release of libvirt-0.6.4



On Thu, 04 Jun 2009 22:32:00 +0100, Daniel P. Berrange wrote:

> Great, this confirms my thought. We asked for a 99 ms timeout, but poll
> returned significantly sooner than we asked for - approx 60-80 ms. So
> when we then ncompare the elapsed time, with scheduled timer, we don't
> see the expiry.
> 
> I suspect that Mandriva is either using a lower HZ for the kernel, or do
> not have the hi-res timers or tickless  feature.

That's correct, Mandriva's server kernel is using 100 hz:

$ uname -a
Linux n4.mandriva.com 2.6.22.12-server-1mdv #1 SMP Tue Nov 20 09:35:09 EST 2007 i686 Intel(R) Xeon(TM) CPU 2.80GHz GNU/Linux
$ zgrep HZ /proc/config.gz 
CONFIG_NO_HZ=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_MACHZ_WDT=m

-- 
Frederik Himpe


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