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Message-ID: <20061022224330.A3120@unix-os.sc.intel.com> Date: Sun, 22 Oct 2006 22:43:30 -0700 From: "Siddha, Suresh B" <suresh.b.siddha@...el.com> To: Paul Jackson <pj@....com> Cc: "Siddha, Suresh B" <suresh.b.siddha@...el.com>, mbligh@...gle.com, nickpiggin@...oo.com.au, akpm@...l.org, menage@...gle.com, Simon.Derr@...l.net, linux-kernel@...r.kernel.org, dino@...ibm.com, rohitseth@...gle.com, holt@....com, dipankar@...ibm.com, clameter@....com Subject: Re: [RFC] cpuset: remove sched domain hooks from cpusets On Sun, Oct 22, 2006 at 10:54:56PM -0700, Paul Jackson wrote: > Suresh wrote: > > group of pinned tasks can completely skew the system load balancing.. > > Ah - yes. That was a problem. If the load balancer couldn't offload > tasks from one or two of the most loaded CPUs (perhaps because they > were pinned.) it tended to give up. > > I believe that Christoph is actively working that problem. Adding him > to the cc list, so he can explain the state of this work more > accurately. Pinned tasks can cause a number of challenges to scheduler. Christoph has recently addressed one such issue and that too only partial. It is very difficult to nicely and uniformly distribute the load pinned to group of cpus.. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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