From: Balbir Singh <balbir@in.ibm.com>
To: Martin Ohlin <martin.ohlin@control.lth.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: A nice CPU resource controller
Date: Thu, 31 Aug 2006 16:43:17 +0530 [thread overview]
Message-ID: <44F6C44D.3040801@in.ibm.com> (raw)
In-Reply-To: <44F6B80D.2020409@control.lth.se>
Martin Ohlin wrote:
> Balbir Singh wrote:
>
>> The CKRM e-series is a PID based CPU Controller. It did a good job of
>> controlling and smoothing out the load (and variations) and even
>> worked with groups. But it achieved all this through some amount of
>> complexity.
>
> I have now downloaded and looked at the code you refer to. But as far as
> I can see, the PID controller is only used for load balancing between
> CPUs, not for controlling the bandwidth/time of individual tasks. Is
> this correct or did I miss something?
>
> /Martin
Yes, the PID controller is used for load balancing.
--
Balbir Singh,
Linux Technology Center,
IBM Software Labs
next prev parent reply other threads:[~2006-08-31 11:13 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-30 15:14 A nice CPU resource controller Martin Ohlin
2006-08-30 15:41 ` Balbir Singh
2006-08-30 16:13 ` Martin Ohlin
2006-08-31 6:03 ` Balbir Singh
2006-08-31 1:07 ` Peter Williams
2006-08-31 6:17 ` Balbir Singh
2006-08-31 10:08 ` Peter Williams
2006-08-31 10:44 ` Mike Galbraith
2006-08-31 6:53 ` Mike Galbraith
2006-08-31 5:21 ` Peter Williams
2006-08-31 7:44 ` Mike Galbraith
2006-08-31 7:42 ` Mike Galbraith
2006-08-31 10:35 ` Martin Ohlin
2006-08-31 14:17 ` Mike Galbraith
2006-08-31 16:01 ` Chris Friesen
2006-08-31 19:14 ` Mike Galbraith
2006-08-31 23:52 ` Peter Williams
2006-08-31 10:21 ` Martin Ohlin
2006-08-31 11:13 ` Balbir Singh [this message]
2006-08-31 18:25 ` Peter Grandi
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