From: Ashok Raj <ashok.raj@intel.com>
To: Nathan Lynch <ntl@pobox.com>
Cc: Ashok Raj <ashok.raj@intel.com>, Andrew Morton <akpm@osdl.org>,
Shaohua Li <shaohua.li@intel.com>,
linux-kernel@vger.kernel.org, zwane@linuxpower.ca,
vatsa@in.ibm.com
Subject: Re: [PATCH 0/10] bulk cpu removal support
Date: Thu, 11 May 2006 15:17:59 -0700 [thread overview]
Message-ID: <20060511151759.A17155@unix-os.sc.intel.com> (raw)
In-Reply-To: <20060511191939.GC10833@localdomain>; from ntl@pobox.com on Thu, May 11, 2006 at 02:19:39PM -0500
On Thu, May 11, 2006 at 02:19:39PM -0500, Nathan Lynch wrote:
> > > just a bunch of handwaving so far, sorry.
> >
> > Hand waving? Dont think that was intensional though.. i think we are trying
> > to address a real problem, if there is a reasonable alternate already
> > that we are not aware of, no problemo...
>
> If the motivation for these patches is to minimize disruption of the
> workload when offlining a group of cpus, then I think the reasonable
> alternative is for the admin (or a script) to migrate sensitive
> tasks and interrupts to cpus that are not going to be offlined --
> before offlining any cpus.
>
> On the other hand, I'm getting the feeling that the problem you're
> really trying to address is that offlining lots of cpus takes a long
Think i relied to the other thread... we can invent lots of goodies to keep
process and interrupt bouncing... but nothing is going to stop the
kstopmachine() hammer for each logical cpu offline in any architecture:-(
next prev parent reply other threads:[~2006-05-11 22:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-08 5:45 [PATCH 0/10] bulk cpu removal support Shaohua Li
2006-05-08 6:29 ` Nathan Lynch
2006-05-08 7:39 ` Shaohua Li
2006-05-08 6:30 ` Ashok Raj
2006-05-11 6:06 ` Andrew Morton
2006-05-11 16:53 ` Ashok Raj
2006-05-11 17:02 ` Andrew Morton
2006-05-11 17:27 ` Ashok Raj
2006-05-11 20:42 ` Martin Bligh
2006-05-11 22:09 ` Ashok Raj
2006-05-12 0:04 ` Nathan Lynch
2006-05-11 17:19 ` Nathan Lynch
2006-05-11 17:40 ` Ashok Raj
2006-05-11 19:19 ` Nathan Lynch
2006-05-11 22:17 ` Ashok Raj [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-05-14 20:49 Protasevich, Natalie
2006-05-14 21:28 Protasevich, Natalie
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