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Date: Tue, 3 Jun 2014 11:28:18 -0500 (CDT) From: Christoph Lameter <cl@...two.org> To: Frederic Weisbecker <fweisbec@...il.com> cc: Andrew Morton <akpm@...ux-foundation.org>, Gilad Ben-Yossef <gilad@...yossef.com>, Thomas Gleixner <tglx@...utronix.de>, Tejun Heo <tj@...nel.org>, John Stultz <johnstul@...ibm.com>, Hakan Akkan <hakanakkan@...il.com>, Max Krasnyansky <maxk@...lcomm.com>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, hughd@...gle.com, viresh.kumar@...aro.org, hpa@...or.com, mingo@...nel.org, peterz@...radead.org, Mike Frysinger <vapier@...too.org>, Minchan Kim <minchan.kim@...il.com> Subject: Re: [PATCH] vmstat: on demand updates from differentials V7 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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