From: Vivek Goyal <vgoyal@redhat.com>
To: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>,
linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/4] io-controller: Add new interfaces to trace backlogged group status
Date: Fri, 21 May 2010 09:17:51 -0400 [thread overview]
Message-ID: <20100521131751.GA15302@redhat.com> (raw)
In-Reply-To: <4BF64712.1070500@cn.fujitsu.com>
On Fri, May 21, 2010 at 04:40:50PM +0800, Gui Jianfeng wrote:
> Hi,
>
> This series implements three new interfaces to keep track of tranferred bytes,
> elapsing time and io rate since group getting backlogged. If the group dequeues
> from service tree, these three interfaces will reset and shows zero.
Hi Gui,
Can you give some details regarding how this functionality is useful? Why
would somebody be interested in only in stats of till group was
backlogged and not in total stats?
Groups can come and go so fast and these stats will reset so many times
that I am not able to visualize how these stats will be useful.
Thanks
Vivek
>
> Thanks
> Gui
next prev parent reply other threads:[~2010-05-21 13:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-21 8:40 [PATCH 0/4] io-controller: Add new interfaces to trace backlogged group status Gui Jianfeng
2010-05-21 8:43 ` [PATCH 1/4] io-controller: a new interface to keep track of bytes during group is backlogged Gui Jianfeng
2010-05-21 8:44 ` [PATCH 2/4] io-controller: a new interface to keep track of the time since group bacame backlogged Gui Jianfeng
2010-05-21 8:45 ` [PATCH 3/4] io-controller: a new interface to keep track of io rate when group is backlogged Gui Jianfeng
2010-05-21 8:46 ` [PATCH 4/4] io-controller: Document for active bytes, time and rate Gui Jianfeng
2010-05-26 18:57 ` Randy Dunlap
2010-05-21 13:17 ` Vivek Goyal [this message]
2010-05-24 1:12 ` [PATCH 0/4] io-controller: Add new interfaces to trace backlogged group status Gui Jianfeng
2010-05-24 21:22 ` Vivek Goyal
2010-05-25 1:37 ` Gui Jianfeng
2010-05-25 2:03 ` Vivek Goyal
2010-05-25 3:00 ` Gui Jianfeng
2010-05-25 13:25 ` Vivek Goyal
2010-06-11 5:10 ` Divyesh Shah
2010-06-11 6:31 ` Gui Jianfeng
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