linux-kernel - Re: [RFC] cpuset: remove sched domain hooks from cpusets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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/