From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan.kim@gmail.com>,
Mel Gorman <mel@linux.vnet.ibm.com>,
Dave Young <hidave.darkstar@gmail.com>,
linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux.com>,
Dave Chinner <david@fromorbit.com>,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH] getdelays: show average CPU/IO/SWAP/RECLAIM delays
Date: Mon, 9 May 2011 14:40:27 +0900 (JST) [thread overview]
Message-ID: <20110509144202.163D.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <20110502140257.GA12780@localhost>
> I find it very handy to show the average delays in milliseconds.
>
> Example output (on 100 concurrent dd reading sparse files):
>
> CPU count real total virtual total delay total delay average
> 986 3223509952 3207643301 38863410579 39.415ms
> IO count delay total delay average
> 0 0 0ms
> SWAP count delay total delay average
> 0 0 0ms
> RECLAIM count delay total delay average
> 1059 5131834899 4ms
> dd: read=0, write=0, cancelled_write=0
>
> CC: Mel Gorman <mel@linux.vnet.ibm.com>
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
> ---
> Documentation/accounting/getdelays.c | 33 +++++++++++++++----------
> 1 file changed, 20 insertions(+), 13 deletions(-)
Cool.
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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prev parent reply other threads:[~2011-05-09 5:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-02 14:02 Wu Fengguang
2011-05-05 3:37 ` Satoru Moriya
2011-05-09 5:40 ` KOSAKI Motohiro [this message]
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