Re: [TEST/REVIEW] CPU accounting patches
- From: "Kevin Oberman" <oberman@xxxxxx>
- Date: Fri, 27 Jan 2006 08:56:44 -0800
> Date: Fri, 27 Jan 2006 04:03:14 -0500
> From: Mike Jakubik <mikej@xxxxxxxxxx>
> Sender: owner-freebsd-current@xxxxxxxxxxx
>
> Brian Candler wrote:
> > I guess this is OK, *if* you trust the power management system to do its job
> > properly. Unfortunately I have very bad experiences of such things. In many
> > cases I've ended up turning off power management completely and locking
> > everything at max clock speed. Mind you, if I do that, anything you do with
> > scaling factors isn't going to affect me, so actually I don't really care.
> > I'll shut up now :-)
> >
>
> Let's not forget, FreeBSD is really a server OS. Who in their right mind
> uses power saving features on a server? It sounds nice in theory, but
> doesn't work as well.
Playing devil's advocate a bit, don't forget that thermal management will
throttle performance even if it is set to maximum (as it should be on a
compute server). This should never happen, but fans and air coolers do
fail.
--
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman@xxxxxx Phone: +1 510 486-8634
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- Re: [TEST/REVIEW] CPU accounting patches
- From: Mike Jakubik
- Re: [TEST/REVIEW] CPU accounting patches
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