From: Nathan Lynch <ntl@pobox.com>
To: Shaohua Li <shaohua.li@intel.com>
Cc: lkml <linux-kernel@vger.kernel.org>,
Zwane Mwaikambo <zwane@linuxpower.ca>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
Ashok Raj <ashok.raj@intel.com>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH 0/10] bulk cpu removal support
Date: Mon, 8 May 2006 01:29:05 -0500 [thread overview]
Message-ID: <20060508062905.GA9344@localdomain> (raw)
In-Reply-To: <1147067137.2760.77.camel@sli10-desk.sh.intel.com>
Shaohua Li wrote:
> CPU hotremove will migrate tasks and redirect interrupts off dead cpu.
> To remove multiple CPUs, we should iteratively do single cpu removal.
> If tasks and interrupts are migrated to a cpu which will be soon
> removed, then we will trash tasks and interrupts again. The following
> patches allow remove several cpus one time. It's fast and avoids
> unnecessary repeated trash tasks and interrupts. This will help NUMA
> style hardware removal and SMP suspend/resume. Comments and suggestions
> are appreciated.
Some quantification of the benefits of adding this complexity would be
appreciated. Like, how long does it take to offline all the cpus in a
node serially, and how much faster is the bulk method?
next prev parent reply other threads:[~2006-05-08 6:29 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 [this message]
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
-- 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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