From: Andrew Morton <akpm@linux-foundation.org>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
linux-kernel@vger.kernel.org, Christoph Lameter <cl@linux.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-mm@kvack.org, Pekka Enberg <penberg@kernel.org>,
Matt Mackall <mpm@selenic.com>,
Sasha Levin <levinsasha928@gmail.com>,
Rik van Riel <riel@redhat.com>, Andi Kleen <andi@firstfloor.org>,
Mel Gorman <mel@csn.ul.ie>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH v5 8/8] mm: add vmstat counters for tracking PCP drains
Date: Tue, 3 Jan 2012 14:37:54 -0800 [thread overview]
Message-ID: <20120103143754.f2640d24.akpm@linux-foundation.org> (raw)
In-Reply-To: <CAOtvUMc259XZ5BdOqys3Kbv_u=Qa0matnuFyGrJhMPLtRKKkUA@mail.gmail.com>
On Tue, 3 Jan 2012 21:00:17 +0200
Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> > NAK.
> >
> > PCP_GLOBAL_IPI_SAVED is only useful at development phase. I can't
> > imagine normal admins use it.
>
> As the description explains, the purpose of the patch is to show why i
> claim the previous
> patch is useful. I did not meant it to be applied to mainline.
Right.
The thing to do is to use this patch to determine the effectiveness of
the preceding patchset and then present a summary of the results in the
other patch's changelog. This is precisely what you did and the
results look pretty good.
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WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
linux-kernel@vger.kernel.org, Christoph Lameter <cl@linux.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-mm@kvack.org, Pekka Enberg <penberg@kernel.org>,
Matt Mackall <mpm@selenic.com>,
Sasha Levin <levinsasha928@gmail.com>,
Rik van Riel <riel@redhat.com>, Andi Kleen <andi@firstfloor.org>,
Mel Gorman <mel@csn.ul.ie>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH v5 8/8] mm: add vmstat counters for tracking PCP drains
Date: Tue, 3 Jan 2012 14:37:54 -0800 [thread overview]
Message-ID: <20120103143754.f2640d24.akpm@linux-foundation.org> (raw)
In-Reply-To: <CAOtvUMc259XZ5BdOqys3Kbv_u=Qa0matnuFyGrJhMPLtRKKkUA@mail.gmail.com>
On Tue, 3 Jan 2012 21:00:17 +0200
Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> > NAK.
> >
> > PCP_GLOBAL_IPI_SAVED is only useful at development phase. I can't
> > imagine normal admins use it.
>
> As the description explains, the purpose of the patch is to show why i
> claim the previous
> patch is useful. I did not meant it to be applied to mainline.
Right.
The thing to do is to use this patch to determine the effectiveness of
the preceding patchset and then present a summary of the results in the
other patch's changelog. This is precisely what you did and the
results look pretty good.
next prev parent reply other threads:[~2012-01-03 22:37 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-02 10:24 [PATCH v5 0/8] Reduce cross CPU IPI interference Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 1/8] smp: Introduce a generic on_each_cpu_mask function Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-03 7:51 ` Michal Nazarewicz
2012-01-03 7:51 ` Michal Nazarewicz
2012-01-03 7:51 ` Michal Nazarewicz
2012-01-03 8:12 ` Gilad Ben-Yossef
2012-01-03 8:12 ` Gilad Ben-Yossef
2012-01-03 8:57 ` Michal Nazarewicz
2012-01-03 8:57 ` Michal Nazarewicz
2012-01-03 8:57 ` Michal Nazarewicz
2012-01-03 22:26 ` Andrew Morton
2012-01-03 22:26 ` Andrew Morton
2012-01-05 13:17 ` Michal Nazarewicz
2012-01-05 13:17 ` Michal Nazarewicz
2012-01-08 16:04 ` Gilad Ben-Yossef
2012-01-08 16:04 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 2/8] arm: Move arm over to generic on_each_cpu_mask Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 3/8] tile: Move tile to use " Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 4/8] smp: Add func to IPI cpus based on parameter func Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-03 22:34 ` Andrew Morton
2012-01-03 22:34 ` Andrew Morton
2012-01-08 16:09 ` Gilad Ben-Yossef
2012-01-08 16:09 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 5/8] slub: Only IPI CPUs that have per cpu obj to flush Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 6/8] fs: only send IPI to invalidate LRU BH when needed Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 7/8] mm: Only IPI CPUs to drain local pages if they exist Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-03 17:45 ` KOSAKI Motohiro
2012-01-03 17:45 ` KOSAKI Motohiro
2012-01-03 18:58 ` Gilad Ben-Yossef
2012-01-03 18:58 ` Gilad Ben-Yossef
2012-01-03 22:02 ` KOSAKI Motohiro
2012-01-03 22:02 ` KOSAKI Motohiro
2012-01-05 14:20 ` Mel Gorman
2012-01-05 14:20 ` Mel Gorman
2012-01-05 14:40 ` Russell King - ARM Linux
2012-01-05 14:40 ` Russell King - ARM Linux
2012-01-05 15:24 ` Peter Zijlstra
2012-01-05 15:24 ` Peter Zijlstra
2012-01-05 16:17 ` Mel Gorman
2012-01-05 16:17 ` Mel Gorman
2012-01-05 16:35 ` Russell King - ARM Linux
2012-01-05 16:35 ` Russell King - ARM Linux
2012-01-05 18:35 ` Paul E. McKenney
2012-01-05 18:35 ` Paul E. McKenney
2012-01-05 22:21 ` Mel Gorman
2012-01-05 22:21 ` Mel Gorman
2012-01-06 6:06 ` Srivatsa S. Bhat
2012-01-06 6:06 ` Srivatsa S. Bhat
2012-01-06 10:46 ` Mel Gorman
2012-01-06 10:46 ` Mel Gorman
2012-01-06 13:28 ` Greg KH
2012-01-06 13:28 ` Greg KH
2012-01-06 14:09 ` Mel Gorman
2012-01-06 14:09 ` Mel Gorman
2012-01-05 22:06 ` Andrew Morton
2012-01-05 22:06 ` Andrew Morton
2012-01-05 22:31 ` Mel Gorman
2012-01-05 22:31 ` Mel Gorman
2012-01-05 23:19 ` Andrew Morton
2012-01-05 23:19 ` Andrew Morton
2012-01-09 17:25 ` Mel Gorman
2012-01-09 17:25 ` Mel Gorman
2012-01-07 16:52 ` Paul E. McKenney
2012-01-07 16:52 ` Paul E. McKenney
2012-01-07 17:05 ` Paul E. McKenney
2012-01-07 17:05 ` Paul E. McKenney
2012-01-05 15:54 ` Mel Gorman
2012-01-05 15:54 ` Mel Gorman
2012-01-08 16:01 ` Gilad Ben-Yossef
2012-01-08 16:01 ` Gilad Ben-Yossef
2012-01-02 10:24 ` [PATCH v5 8/8] mm: add vmstat counters for tracking PCP drains Gilad Ben-Yossef
2012-01-02 10:24 ` Gilad Ben-Yossef
2012-01-03 17:47 ` KOSAKI Motohiro
2012-01-03 17:47 ` KOSAKI Motohiro
2012-01-03 19:00 ` Gilad Ben-Yossef
2012-01-03 19:00 ` Gilad Ben-Yossef
2012-01-03 22:13 ` KOSAKI Motohiro
2012-01-03 22:13 ` KOSAKI Motohiro
2012-01-03 22:37 ` Andrew Morton [this message]
2012-01-03 22:37 ` Andrew Morton
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