Date: Fri, 27 Jan 2006 12:39:44 -0600 From: "Mullen, Adam" <Adam.Mullen@c-b.com> To: "Garance A Drosihn" <drosih@rpi.edu>, "Mike Jakubik" <mikej@rogers.com> Cc: arch@freebsd.org, current@freebsd.org Subject: RE: [TEST/REVIEW] CPU accounting patches Message-ID: <E6243148329F3A468BC8F98468FC4BB405C4C3FE@fw1-ex03.c-b.net>
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Lets see here though, how many of us have a 100 node beowulf cluster who use FreeBSD daily? I know I don't! I've been following this conversation and my 2 cents are this, taking into consideration cpu time accounting for machines that use power management is trivial. I view those that use power management are a lot less likely to be in an environment where they are either A) billing for utility computing, B) care about 99.9999% accurate cpu time accounting, C) have a need for this precision. My thought is that a blurb be submitted with this patch specifying the caveats if powersaved is also used. Just my humble opinion.=20 -----Original Message----- From: owner-freebsd-arch@freebsd.org [mailto:owner-freebsd-arch@freebsd.org] On Behalf Of Garance A Drosihn Sent: Friday, January 27, 2006 12:30 PM To: Mike Jakubik Cc: arch@freebsd.org; current@freebsd.org Subject: Re: [TEST/REVIEW] CPU accounting patches At 4:03 AM -0500 1/27/06, Mike Jakubik wrote: > >Let's not forget, FreeBSD is really a server OS. Who in their right=20 >mind uses power saving features on a server? It sounds nice in theory,=20 >but doesn't work as well. Apparently your power and cooling bills are much lower than ours. We would very much love it if the computers will use only the energy they need to get the job done. Yes, that means a big bill when some simulation is running on a 100-node beowulf cluster. But it also means we don't want to be paying the bill to run that cluster at full-throttle when there's no work for those CPU's to do. --=20 Garance Alistair Drosehn =3D gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu _______________________________________________ freebsd-arch@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-arch To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org" This message contains confidential information and is intended only for t= he individual named. If you are not the named addressee=0D you should not disseminate, distribute or copy this e-mail. Please notify= the sender immediately by e-mail if you have received this =0D e-mail by mistake and delete this e-mail from your system. E-mail transmi= ssion cannot be guaranteed to be secured or error-free as=0D information could be intercepted, corrupted, lost, destroyed, received la= te or incomplete, or could contain viruses. The sender therefore =0D does not accept liability for any error or omission in the contents of th= is message, which arises as a result of e-mail transmission. =0D If verification is required, please request a hard-copy version from the = sender.
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