From: Vivek Goyal <vgoyal@redhat.com>
To: Fabio Checconi <fchecconi@gmail.com>
Cc: Nauman Rafique <nauman@google.com>,
Gui Jianfeng <guijianfeng@cn.fujitsu.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
dpshah@google.com, lizf@cn.fujitsu.com, mikew@google.com,
paolo.valente@unimore.it, jens.axboe@oracle.com,
ryov@valinux.co.jp, fernando@intellilink.co.jp,
s-uchida@ap.jp.nec.com, taka@valinux.co.jp, arozansk@redhat.com,
jmoyer@redhat.com, oz-kernel@redhat.com,
balbir@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
containers@lists.linux-foundation.org, akpm@linux-foundation.org,
menage@google.com, peterz@infradead.org
Subject: Re: [PATCH 01/10] Documentation
Date: Tue, 24 Mar 2009 14:35:32 -0400 [thread overview]
Message-ID: <20090324183532.GG21389@redhat.com> (raw)
In-Reply-To: <20090324184101.GO18554@gandalf.sssup.it>
On Tue, Mar 24, 2009 at 07:41:01PM +0100, Fabio Checconi wrote:
> > From: Vivek Goyal <vgoyal@redhat.com>
> > Date: Tue, Mar 24, 2009 02:29:06PM -0400
> >
> ...
> > > Does keeping the sync queue in ready tree solves the problem too? Is
> > > it because it avoid a virtual time jump?
> > >
> >
> > I have not tried the second approch yet. But that also should solve the
> > vtime jump issue.
> >
>
> Do you mean that you intend to keep a queue with no backlog in the
> active tree?
Yes. Is it possible to keep a not-backlogged queue in the tree for later
expiry. So that we don't actively wait/idle for next request to come and
hope queue will become backlogged soon. Otherwise, it will be deleted from
the active queue. This is just a thought, I am not even sure how would it
interefere with bfq code.
All this to solve the vtime jump issue for sync queues.
Thanks
Vivek
next prev parent reply other threads:[~2009-03-24 18:56 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-12 1:56 [RFC] IO Controller Vivek Goyal
2009-03-12 1:56 ` [PATCH 01/10] Documentation Vivek Goyal
2009-03-12 7:11 ` Andrew Morton
2009-03-12 10:07 ` Ryo Tsuruta
2009-03-12 18:01 ` Vivek Goyal
2009-03-16 8:40 ` Ryo Tsuruta
2009-03-16 13:39 ` Vivek Goyal
2009-04-05 15:15 ` Andrea Righi
2009-04-06 6:50 ` Nauman Rafique
2009-04-07 6:40 ` Vivek Goyal
2009-04-08 20:37 ` Andrea Righi
2009-04-16 18:37 ` Vivek Goyal
2009-04-17 5:35 ` Dhaval Giani
2009-04-17 13:49 ` IO Controller discussion (Was: Re: [PATCH 01/10] Documentation) Vivek Goyal
2009-04-17 9:37 ` [PATCH 01/10] Documentation Andrea Righi
2009-04-17 14:13 ` IO controller discussion (Was: Re: [PATCH 01/10] Documentation) Vivek Goyal
2009-04-17 18:09 ` Nauman Rafique
2009-04-18 8:13 ` Andrea Righi
2009-04-19 12:59 ` Vivek Goyal
2009-04-19 13:08 ` Vivek Goyal
2009-04-17 22:38 ` Andrea Righi
2009-04-19 13:21 ` Vivek Goyal
2009-04-18 13:19 ` Balbir Singh
2009-04-19 13:45 ` Vivek Goyal
2009-04-19 15:53 ` Andrea Righi
2009-04-21 1:16 ` KAMEZAWA Hiroyuki
2009-04-19 4:35 ` Nauman Rafique
2009-03-12 7:45 ` [PATCH 01/10] Documentation Yang Hongyang
2009-03-12 13:51 ` Vivek Goyal
2009-03-12 10:00 ` Dhaval Giani
2009-03-12 14:04 ` Vivek Goyal
2009-03-12 14:48 ` Fabio Checconi
2009-03-12 15:03 ` Vivek Goyal
2009-03-18 7:23 ` Gui Jianfeng
2009-03-18 21:55 ` Vivek Goyal
2009-03-19 3:38 ` Gui Jianfeng
2009-03-24 5:32 ` Nauman Rafique
2009-03-24 12:58 ` Vivek Goyal
2009-03-24 18:14 ` Nauman Rafique
2009-03-24 18:29 ` Vivek Goyal
2009-03-24 18:41 ` Fabio Checconi
2009-03-24 18:35 ` Vivek Goyal [this message]
2009-03-24 18:49 ` Nauman Rafique
2009-03-24 19:04 ` Fabio Checconi
2009-03-12 10:24 ` Peter Zijlstra
2009-03-12 14:09 ` Vivek Goyal
2009-04-06 14:35 ` Balbir Singh
2009-04-06 22:00 ` Nauman Rafique
2009-04-07 5:59 ` Gui Jianfeng
2009-04-13 13:40 ` Vivek Goyal
2009-05-01 22:04 ` IKEDA, Munehiro
2009-05-01 22:45 ` IO Controller per cgroup request descriptors (Re: [PATCH 01/10] Documentation) Vivek Goyal
2009-05-01 23:39 ` Nauman Rafique
2009-05-04 17:18 ` IKEDA, Munehiro
2009-03-12 1:56 ` [PATCH 02/10] Common flat fair queuing code in elevaotor layer Vivek Goyal
2009-03-19 6:27 ` Gui Jianfeng
2009-03-27 8:30 ` [PATCH] IO Controller: Don't store the pid in single queue circumstances Gui Jianfeng
2009-03-27 13:52 ` Vivek Goyal
2009-04-02 4:06 ` [PATCH 02/10] Common flat fair queuing code in elevaotor layer Divyesh Shah
2009-04-02 13:52 ` Vivek Goyal
2009-03-12 1:56 ` [PATCH 03/10] Modify cfq to make use of flat elevator fair queuing Vivek Goyal
2009-03-12 1:56 ` [PATCH 04/10] Common hierarchical fair queuing code in elevaotor layer Vivek Goyal
2009-03-12 1:56 ` [PATCH 05/10] cfq changes to use " Vivek Goyal
2009-04-16 5:25 ` [PATCH] IO-Controller: Fix kernel panic after moving a task Gui Jianfeng
2009-04-16 19:15 ` Vivek Goyal
2009-03-12 1:56 ` [PATCH 06/10] Separate out queue and data Vivek Goyal
2009-03-12 1:56 ` [PATCH 07/10] Prepare elevator layer for single queue schedulers Vivek Goyal
2009-03-12 1:56 ` [PATCH 08/10] noop changes for hierarchical fair queuing Vivek Goyal
2009-03-12 1:56 ` [PATCH 09/10] deadline " Vivek Goyal
2009-03-12 1:56 ` [PATCH 10/10] anticipatory " Vivek Goyal
2009-03-27 6:58 ` [PATCH] IO Controller: No need to stop idling in as Gui Jianfeng
2009-03-27 14:05 ` Vivek Goyal
2009-03-30 1:09 ` Gui Jianfeng
2009-03-12 3:27 ` [RFC] IO Controller Takuya Yoshikawa
2009-03-12 6:40 ` anqin
2009-03-12 6:55 ` Li Zefan
2009-03-12 7:11 ` anqin
2009-03-12 14:57 ` Vivek Goyal
2009-03-12 13:46 ` Vivek Goyal
2009-03-12 13:43 ` Vivek Goyal
2009-04-02 6:39 ` Gui Jianfeng
2009-04-02 14:00 ` Vivek Goyal
2009-04-07 1:40 ` Gui Jianfeng
2009-04-07 6:40 ` Gui Jianfeng
2009-04-10 9:33 ` Gui Jianfeng
2009-04-10 17:49 ` Nauman Rafique
2009-04-13 13:09 ` Vivek Goyal
2009-04-22 3:04 ` Gui Jianfeng
2009-04-22 3:10 ` Nauman Rafique
2009-04-22 13:23 ` Vivek Goyal
2009-04-30 19:38 ` Nauman Rafique
2009-05-05 3:18 ` Gui Jianfeng
2009-05-01 1:25 ` Divyesh Shah
2009-05-01 2:45 ` Vivek Goyal
2009-05-01 3:00 ` Divyesh Shah
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