[ale] VM load average stays around 4.5 and jumps as high as 8 or 9

[Jim Kinney]

Thanks. That makes sense.

Of course making the vm "tickle" itself often keeps the clock current :-)

Linux in a vm is more stable than windows in a vm. Linux in a vm is as
stable as Linux on iron. Windows in a vm is less stable than windows on a
physical system.

On Mon, May 14, 2012 at 1:17 PM, Brian Mathis <
brian.mathis+ale at betteradmin.com> wrote:

> This goes in the guest.  If you have many VMs running on a host, you
> will notice a significant drop in host CPU usage.  This does not apply
> to newer CentOS 6 or any other distros that use a tickless kernel.
>
> I'm not sure if it will help much of anything on the host.  Maybe
> lower power usage.
>
>
> ❧ Brian Mathis
>
>
> On Mon, May 14, 2012 at 10:25 AM, Jim Kinney <jim.kinney at gmail.com> wrote:
> > Is this a setting for the host or the guest?
> >
> >
> >
> > On Mon, May 14, 2012 at 10:08 AM, Brian Mathis
> > <brian.mathis+ale at betteradmin.com> wrote:
> >>
> >> CentOS 5 uses a default timer interrupt frequency of 1000Hz.  This
> >> puts a bit of a load on the host system, and can be changed to 100Hz
> >> with no issues.
> >>
> >> To change this value, update the kernel line in /etc/grub.conf with
> >> the parameter "divider=10", like this:
> >>    kernel /vmlinuz-2.6.18-274.3.1.el5 ro root=/dev/sda1 divider=10
> >> and reboot.  You will probably notice your host to be a bit more
> >> responsive, and if you're on a laptop your battery life should improve
> >> when running the VM.
> >>
> >> VMware has an article about this if you want more information:
> >>
> >>
> http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1005802
> >>
> >>
> >> ❧ Brian Mathis
> >>
> >>
> >> On Fri, May 11, 2012 at 11:39 AM, Geoffrey Myers
> >> <lists at serioustechnology.com> wrote:
> >> > So, I've got a Centos VM that is installed on Mac.  I had a Mac OSX
> >> > update and a gcc update on the VM.
> >> >
> >> > Now my load average sits at 4.5 and every now and then jumps to 8 or
> 9.
> >> >  when it does that, the VM freezes until it drops back down.
> >> >
> >> > Any clues as to what is causing this?  I'm sure the gcc is not an
> issue.
> >> >  Do I need to reinstall virtual box?
> >> >
> >> > --
> >> > Until later, Geoffrey
> >>
> >> _______________________________________________
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> >
> >
> >
> >
> > --
> > --
> > James P. Kinney III
> >
> > As long as the general population is passive, apathetic, diverted to
> > consumerism or hatred of the vulnerable, then the powerful can do as they
> > please, and those who survive will be left to contemplate the outcome.
> > - 2011 Noam Chomsky
> >
> > http://heretothereideas.blogspot.com/
> >
> >
> > _______________________________________________
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> > http://mail.ale.org/mailman/listinfo/ale
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> > http://mail.ale.org/mailman/listinfo
> >
>
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>



-- 
-- 
James P. Kinney III

As long as the general population is passive, apathetic, diverted to
consumerism or hatred of the vulnerable, then the powerful can do as they
please, and those who survive will be left to contemplate the outcome.
- *2011 Noam Chomsky

http://heretothereideas.blogspot.com/
*
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