Comments on: CPU Caps: A Gift from the Heavens http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/ by Mark Mayo Wed, 20 Aug 2008 06:05:15 +0000 http://wordpress.org/?v=2.0.4 by: mark http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-30776 Wed, 21 Jun 2006 03:58:29 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-30776 Cool. I just finished playing with build41 so I think I'll give the cpu-cap enabled build 40 a try. Thanks for the update David. Cool. I just finished playing with build41 so I think I’ll give the cpu-cap enabled build 40 a try. Thanks for the update David.

]]> by: David Comay http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-30759 Wed, 21 Jun 2006 01:02:21 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-30759 Just an update that a resync of Andrei's CPU Caps is available that is based of Solaris Express build 40. For more details, please see http://www.opensolaris.org/os/project/rm/rctls/cpu-caps/ Just an update that a resync of Andrei’s CPU Caps is available
that is based of Solaris Express build 40. For more details, please
see

http://www.opensolaris.org/os/project/rm/rctls/cpu-caps/

]]> by: Dan Price http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10841 Thu, 06 Apr 2006 18:35:59 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10841 François, shares represent an entitlement to a certain amount of CPU. But they don't limit how much CPU you can use if the system is idle. A lot of customers want to be able to put a workload onto a machine and know that no matter what happens, it won't use more than (for example) 25% of one CPU. Frankly, I think that CPU caps is going to wind up being more popular than shares, mostly because they are simpler to understand. François, shares represent an entitlement to a certain amount of CPU. But they don’t limit how much CPU you can use if the system is idle. A lot of customers want to be able to put a workload onto a machine and know that no matter what happens, it won’t use more than (for example) 25% of one CPU.

Frankly, I think that CPU caps is going to wind up being more popular than shares, mostly because they are simpler to understand.

]]> by: François http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10840 Thu, 06 Apr 2006 16:53:36 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10840 What is the purpose of that feature? CPU share is good enough. Why caping a process when you can give him a minimum guarantied cpu usage? For testing only, and even there... What is the purpose of that feature? CPU share is good enough. Why caping a process when you can give him a minimum guarantied cpu usage?

For testing only, and even there…

]]> by: mark http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10832 Thu, 06 Apr 2006 07:03:23 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10832 Let's hope Disk Cap is Andrei's next project. :) Let’s hope Disk Cap is Andrei’s next project. :)

]]> by: Fazal Majid http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10831 Thu, 06 Apr 2006 06:58:12 +0000 http://www.vmunix.com/mark/blog/archives/2006/04/05/cpu-caps-a-gift-from-the-heavens/#comment-10831 I'm usually more interested in capping disk I/O, but I/O schedulers are harder than CPU ones, and get short shrift. I’m usually more interested in capping disk I/O, but I/O schedulers are harder than CPU ones, and get short shrift.

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