From: Max Krasnyanskiy <maxk@qualcomm.com>
To: Dimitri Sivanich <sivanich@sgi.com>
Cc: Paul Jackson <pj@sgi.com>,
linux-kernel@vger.kernel.org, Con Kolivas <kernel@kolivas.org>,
"Derek L. Fults" <dfults@sgi.com>, devik <devik@cdi.cz>,
Dinakar Guniguntala <dino@in.ibm.com>,
Emmanuel Pacaud <emmanuel.pacaud@univ-poitiers.fr>,
Frederik Deweerdt <deweerdt@free.fr>, Ingo Molnar <mingo@elte.hu>,
Matthew Dobson <colpatch@us.ibm.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
rostedt@goodmis.org, Oleg Nesterov <oleg@tv-sign.ru>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
Paul Menage <menage@google.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
"Randy.Dunlap" <rddunlap@osdl.org>,
suresh.b.siddha@intel.com, Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Inquiry: Should we remove "isolcpus= kernel boot option? (may have realtime uses)
Date: Tue, 03 Jun 2008 10:57:24 -0700 [thread overview]
Message-ID: <48458604.3040804@qualcomm.com> (raw)
In-Reply-To: <20080603144010.GA25948@sgi.com>
Dimitri Sivanich wrote:
> On Mon, Jun 02, 2008 at 02:59:34PM -0700, Max Krasnyansky wrote:
>> Yes it used to be somewhat unstable. These days it solid. I'm using it on a
>> wide range of systems: uTCA Core2Duo, NUMA dual-Opteron, 8way Core2, etc. And
>> things work as expected.
>
> Max,
>
> I tried the following scenario on an ia64 Altix running 2.6.26-rc4 with
> cpusets compiled in but cpuset fs unmounted. Do your patches already address this?
Nope. My patch was a trivial fix for not destroying scheduler domains on
hotplug events. The problem you're seeing is different.
I'm not an expert in cpu hotplug internal machinery especially on ia64. Recent
kernels (.22 and up) I've tried on x86 and x86-64 have no issues with cpu
hotplug. You probably want to submit a bug report (in a separate thread) maybe
it's a regression in the latest .26-rc series.
Max
next prev parent reply other threads:[~2008-06-03 17:57 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-02 2:30 Inquiry: Should we remove "isolcpus= kernel boot option? (may have realtime uses) Paul Jackson
2008-06-02 16:42 ` Dimitri Sivanich
2008-06-02 18:39 ` Max Krasnyansky
2008-06-02 21:41 ` Dimitri Sivanich
2008-06-02 21:59 ` Max Krasnyansky
2008-06-03 14:40 ` Dimitri Sivanich
2008-06-03 17:57 ` Max Krasnyanskiy [this message]
2008-06-04 14:00 ` Dimitri Sivanich
2008-06-04 18:07 ` Stop machine threads are getting preemted by the rt period enforcement Max Krasnyansky
2008-06-04 18:18 ` Peter Zijlstra
2008-06-04 18:24 ` Max Krasnyansky
2008-06-04 18:55 ` Peter Zijlstra
2008-06-04 20:14 ` Max Krasnyansky
2008-06-02 22:35 ` Inquiry: Should we remove "isolcpus= kernel boot option? (may have realtime uses) Ingo Oeser
2008-06-02 22:45 ` Peter Zijlstra
2008-06-02 23:04 ` Max Krasnyansky
2008-06-02 23:55 ` Ingo Oeser
2008-06-03 3:32 ` Max Krasnyansky
2008-06-03 23:47 ` Max Krasnyanskiy
2008-06-04 0:41 ` Paul Jackson
2008-06-04 4:32 ` Max Krasnyansky
2008-06-04 4:47 ` Paul Jackson
2008-06-04 12:18 ` Andi Kleen
2008-06-04 17:41 ` Paul Jackson
2008-06-04 18:29 ` Max Krasnyansky
2008-06-04 18:56 ` Peter Zijlstra
2008-06-04 19:34 ` Max Krasnyansky
2008-06-04 18:58 ` Paul Jackson
2008-06-04 19:31 ` Max Krasnyansky
2008-06-04 19:37 ` Paul Jackson
2008-06-04 19:45 ` Max Krasnyansky
2008-06-04 20:05 ` Andi Kleen
2008-06-04 20:23 ` Paul Jackson
2008-06-04 20:03 ` Andi Kleen
2008-06-04 20:16 ` Paul Jackson
2008-06-04 20:33 ` Andi Kleen
2008-06-04 20:38 ` Paul Jackson
2008-06-04 21:16 ` Max Krasnyansky
2008-06-04 21:17 ` Paul Jackson
2008-06-04 21:20 ` Max Krasnyansky
2008-06-04 21:26 ` Paul Jackson
2008-06-04 1:18 ` Nick Piggin
2008-06-04 3:00 ` Max Krasnyansky
2008-06-04 16:18 ` Ingo Oeser
2008-06-04 17:47 ` Max Krasnyansky
2008-06-03 6:03 ` Nick Piggin
2008-06-04 9:58 ` Mark Hounschell
2008-06-04 17:26 ` Paul Jackson
2008-06-04 21:00 ` Mark Hounschell
2008-06-04 21:03 ` Paul Jackson
2008-06-04 19:26 ` Max Krasnyansky
2008-06-04 20:25 ` Peter Zijlstra
2008-06-04 21:44 ` Michael Trimarchi
2008-06-04 21:52 ` Peter Zijlstra
2008-06-05 11:16 ` Michael Trimarchi
2008-06-05 12:07 ` Peter Zijlstra
2008-06-05 14:57 ` Michael Trimarchi
2009-05-08 2:48 ` GeunSik Lim
2008-06-05 11:44 ` Mark Hounschell
2008-06-06 22:28 ` Max Krasnyanskiy
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