Messages in this thread | | | Subject | Re: [PATCH 1/2] VMware guest detection for x86 and x86-64 | From | Cristi Magherusan <> | Date | Wed, 24 Sep 2008 21:13:14 +0300 |
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On Wed, 2008-09-24 at 22:23 +0800, Yan Li wrote: > On Wed, Sep 24, 2008 at 05:10:24PM +0300, Cristi Magherusan wrote: > > On Wed, 2008-09-24 at 20:22 +0800, Yan Li wrote: > > > Detects whether we are running as a VMware guest or not. Detection is > > > based upon DMI vendor string. > > > > > > It provides a function: > > > int is_vmware_guest(void) > > > that can be used easily to detect if we are running as a VMware guest > > > or not. > > > > We can also use this feature to force the HZ value to 100 or 250 at most > > when running in a virtual environment, since VirtualBox had some issues > > with this by taking a lot of CPU time when the HZ was set to 1000. > > That's good. But this function is used for detecting VMware guest > only. Do you think VMware also suffers from this problem? > I don't know for sure about VMware, but someone who has it installed can try it. I had this issue with a CentOS 5-server virtual machine downloaded from http://www.thoughtpolice.co.uk/vmware/
The fix consisted in using a kernel compiled with the HZ value set to 100 instead of the default which was 1000.
Cristi
-- Cristi Măgherușan, Inginer de sistem/retea Universitatea Tehnică din Cluj-Napoca Centrul de Comunicații "Pusztai Kalman" Tel. 0264/401247 http://cc.utcluj.ro [unhandled content-type:application/pgp-signature] | |