From: Christoph Lameter <cl@gentwo.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Gilad Ben-Yossef <gilad@benyossef.com>,
Thomas Gleixner <tglx@linutronix.de>, Tejun Heo <tj@kernel.org>,
John Stultz <johnstul@us.ibm.com>,
Hakan Akkan <hakanakkan@gmail.com>,
Max Krasnyansky <maxk@qualcomm.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
hughd@google.com, viresh.kumar@linaro.org, hpa@zytor.com,
mingo@kernel.org, peterz@infradead.org,
Mike Frysinger <vapier@gentoo.org>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH] vmstat: on demand updates from differentials V7
Date: Tue, 3 Jun 2014 11:28:18 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1406031127080.14380@gentwo.org> (raw)
In-Reply-To: <20140603160953.GF23860@localhost.localdomain>
On Tue, 3 Jun 2014, Frederic Weisbecker wrote:
> So after the cpumask_var_t conversion I have no other concern except
> perhaps that the scan may bring some overhead on workloads that don't
> care about isolation. You might want to make it optional. But I let you
> check that.
Testing so far indicates that typical loads have spurts of kernel usage
which need vmstat but otherwise there are large segments of processing
that do not need the vmstat worker. It seems that this change is generally
helpful.
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next prev parent reply other threads:[~2014-06-03 16:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-29 19:56 Christoph Lameter
2014-05-29 23:55 ` Frederic Weisbecker
2014-05-30 14:00 ` Christoph Lameter
2014-05-30 0:06 ` Frederic Weisbecker
2014-05-30 13:52 ` Christoph Lameter
2014-06-03 15:43 ` Frederic Weisbecker
2014-06-03 16:09 ` Frederic Weisbecker
2014-06-03 16:28 ` Christoph Lameter [this message]
2014-06-03 16:38 ` Christoph Lameter
2014-06-03 16:55 ` Frederic Weisbecker
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