From: Vivek Goyal <vgoyal@redhat.com>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: Tejun Heo <tj@kernel.org>, Jan Kara <jack@suse.cz>,
Jens Axboe <axboe@kernel.dk>,
linux-mm@kvack.org, sjayaraman@suse.com, andrea@betterlinux.com,
jmoyer@redhat.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com,
lizefan@huawei.com, containers@lists.linux-foundation.org,
cgroups@vger.kernel.org, ctalbott@google.com, rni@google.com,
lsf@lists.linux-foundation.org
Subject: Re: [RFC] writeback and cgroup
Date: Wed, 4 Apr 2012 14:35:29 -0400 [thread overview]
Message-ID: <20120404183528.GJ12676@redhat.com> (raw)
In-Reply-To: <20120404175124.GA8931@localhost>
On Wed, Apr 04, 2012 at 10:51:24AM -0700, Fengguang Wu wrote:
[..]
> The sweet split point would be for balance_dirty_pages() to do cgroup
> aware buffered write throttling and leave other IOs to the current
> blkcg. For this to work well as a total solution for end users, I hope
> we can cooperate and figure out ways for the two throttling entities
> to work well with each other.
Throttling read + direct IO, higher up has few issues too. Users will
not like that a task got blocked as it tried to submit a read from a
throttled group. Current async behavior works well where we queue up the
bio from the task in throttled group and let task do other things. Same
is true for AIO where we would not like to block in bio submission.
Thanks
Vivek
WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: Tejun Heo <tj@kernel.org>, Jan Kara <jack@suse.cz>,
Jens Axboe <axboe@kernel.dk>,
linux-mm@kvack.org, sjayaraman@suse.com, andrea@betterlinux.com,
jmoyer@redhat.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com,
lizefan@huawei.com, containers@lists.linux-foundation.org,
cgroups@vger.kernel.org, ctalbott@google.com, rni@google.com,
lsf@lists.linux-foundation.org
Subject: Re: [RFC] writeback and cgroup
Date: Wed, 4 Apr 2012 14:35:29 -0400 [thread overview]
Message-ID: <20120404183528.GJ12676@redhat.com> (raw)
In-Reply-To: <20120404175124.GA8931@localhost>
On Wed, Apr 04, 2012 at 10:51:24AM -0700, Fengguang Wu wrote:
[..]
> The sweet split point would be for balance_dirty_pages() to do cgroup
> aware buffered write throttling and leave other IOs to the current
> blkcg. For this to work well as a total solution for end users, I hope
> we can cooperate and figure out ways for the two throttling entities
> to work well with each other.
Throttling read + direct IO, higher up has few issues too. Users will
not like that a task got blocked as it tried to submit a read from a
throttled group. Current async behavior works well where we queue up the
bio from the task in throttled group and let task do other things. Same
is true for AIO where we would not like to block in bio submission.
Thanks
Vivek
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next prev parent reply other threads:[~2012-04-04 18:36 UTC|newest]
Thread overview: 262+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-03 18:36 [RFC] writeback and cgroup Tejun Heo
2012-04-03 18:36 ` Tejun Heo
2012-04-03 18:36 ` Tejun Heo
2012-04-04 14:51 ` Vivek Goyal
2012-04-04 14:51 ` Vivek Goyal
2012-04-04 15:36 ` [Lsf] " Steve French
2012-04-04 15:36 ` Steve French
2012-04-04 15:36 ` Steve French
2012-04-04 18:56 ` Tejun Heo
2012-04-04 18:56 ` Tejun Heo
2012-04-04 19:19 ` Vivek Goyal
2012-04-04 19:19 ` Vivek Goyal
2012-04-25 8:47 ` Suresh Jayaraman
2012-04-25 8:47 ` Suresh Jayaraman
2012-04-25 8:47 ` Suresh Jayaraman
[not found] ` <20120404191918.GK12676-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-25 8:47 ` Suresh Jayaraman
[not found] ` <20120404185605.GC29686-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-04-04 19:19 ` Vivek Goyal
[not found] ` <CAH2r5mtwQa0Uu=_Yd2JywVJXA=OMGV43X_OUfziC-yeVy9BGtQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-04 18:56 ` Tejun Heo
2012-04-04 18:49 ` Tejun Heo
2012-04-04 18:49 ` Tejun Heo
2012-04-04 18:49 ` Tejun Heo
2012-04-04 19:23 ` [Lsf] " Steve French
2012-04-04 19:23 ` Steve French
[not found] ` <CAH2r5mvP56D0y4mk5wKrJcj+=OZ0e0Q5No_L+9a8a=GMcEhRew-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-14 12:15 ` Peter Zijlstra
2012-04-14 12:15 ` Peter Zijlstra
2012-04-14 12:15 ` Peter Zijlstra
2012-04-14 12:15 ` Peter Zijlstra
[not found] ` <20120404184909.GB29686-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-04-04 19:23 ` Steve French
2012-04-04 20:32 ` Vivek Goyal
2012-04-05 16:38 ` Tejun Heo
2012-04-14 11:53 ` [Lsf] " Peter Zijlstra
2012-04-04 20:32 ` Vivek Goyal
2012-04-04 20:32 ` Vivek Goyal
[not found] ` <20120404203239.GM12676-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-04 23:02 ` Tejun Heo
2012-04-04 23:02 ` Tejun Heo
2012-04-04 23:02 ` Tejun Heo
2012-04-04 23:02 ` Tejun Heo
2012-04-05 16:38 ` Tejun Heo
2012-04-05 16:38 ` Tejun Heo
2012-04-05 16:38 ` Tejun Heo
[not found] ` <20120405163854.GE12854-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-05 17:13 ` Vivek Goyal
2012-04-05 17:13 ` Vivek Goyal
2012-04-05 17:13 ` Vivek Goyal
2012-04-14 11:53 ` [Lsf] " Peter Zijlstra
2012-04-14 11:53 ` Peter Zijlstra
2012-04-14 11:53 ` Peter Zijlstra
2012-04-16 1:25 ` Steve French
[not found] ` <20120404145134.GC12676-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-04 15:36 ` Steve French
2012-04-04 18:49 ` Tejun Heo
2012-04-07 8:00 ` Jan Kara
2012-04-07 8:00 ` Jan Kara
2012-04-07 8:00 ` Jan Kara
[not found] ` <20120407080027.GA2584-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-10 16:23 ` [Lsf] " Steve French
2012-04-10 18:06 ` Vivek Goyal
2012-04-10 16:23 ` [Lsf] " Steve French
2012-04-10 16:23 ` Steve French
2012-04-10 16:23 ` Steve French
[not found] ` <CAH2r5mvLVnM3Se5vBBsYzwaz5Ckp3i6SVnGp2T0XaGe9_u8YYA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-10 18:16 ` Vivek Goyal
2012-04-10 18:16 ` Vivek Goyal
2012-04-10 18:16 ` Vivek Goyal
2012-04-10 18:06 ` Vivek Goyal
2012-04-10 18:06 ` Vivek Goyal
[not found] ` <20120410180653.GJ21801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-10 21:05 ` Jan Kara
2012-04-10 21:05 ` Jan Kara
2012-04-10 21:05 ` Jan Kara
[not found] ` <20120410210505.GE4936-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-10 21:20 ` Vivek Goyal
2012-04-10 21:20 ` Vivek Goyal
2012-04-10 21:20 ` Vivek Goyal
[not found] ` <20120410212041.GP21801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-10 22:24 ` Jan Kara
2012-04-10 22:24 ` Jan Kara
2012-04-10 22:24 ` Jan Kara
[not found] ` <20120410222425.GF4936-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-11 15:40 ` Vivek Goyal
2012-04-11 15:40 ` Vivek Goyal
2012-04-11 15:40 ` Vivek Goyal
2012-04-11 15:45 ` Vivek Goyal
2012-04-11 15:45 ` Vivek Goyal
[not found] ` <20120411154531.GE16692-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-11 17:05 ` Jan Kara
2012-04-11 17:05 ` Jan Kara
2012-04-11 17:05 ` Jan Kara
2012-04-11 17:23 ` Vivek Goyal
2012-04-11 17:23 ` Vivek Goyal
[not found] ` <20120411172311.GF16692-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-11 19:44 ` Jan Kara
2012-04-11 19:44 ` Jan Kara
2012-04-11 19:44 ` Jan Kara
[not found] ` <20120411170542.GB16008-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-11 17:23 ` Vivek Goyal
2012-04-17 21:48 ` Tejun Heo
2012-04-17 21:48 ` Tejun Heo
2012-04-17 21:48 ` Tejun Heo
2012-04-17 21:48 ` Tejun Heo
2012-04-18 18:18 ` Vivek Goyal
2012-04-18 18:18 ` Vivek Goyal
[not found] ` <20120417214831.GE19975-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-18 18:18 ` Vivek Goyal
[not found] ` <20120411154005.GD16692-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-11 15:45 ` Vivek Goyal
2012-04-11 19:22 ` Jan Kara
2012-04-14 12:25 ` [Lsf] " Peter Zijlstra
2012-04-11 19:22 ` Jan Kara
2012-04-11 19:22 ` Jan Kara
[not found] ` <20120411192231.GF16008-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-12 20:37 ` Vivek Goyal
2012-04-12 20:37 ` Vivek Goyal
2012-04-12 20:37 ` Vivek Goyal
2012-04-12 20:51 ` Tejun Heo
2012-04-12 20:51 ` Tejun Heo
[not found] ` <20120412205148.GA24056-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-14 14:36 ` Fengguang Wu
2012-04-14 14:36 ` Fengguang Wu
2012-04-16 14:57 ` Vivek Goyal
2012-04-16 14:57 ` Vivek Goyal
2012-04-24 11:33 ` Fengguang Wu
2012-04-24 11:33 ` Fengguang Wu
2012-04-24 14:56 ` Jan Kara
2012-04-24 14:56 ` Jan Kara
2012-04-24 14:56 ` Jan Kara
2012-04-24 14:56 ` Jan Kara
2012-04-24 15:58 ` Vivek Goyal
2012-04-24 15:58 ` Vivek Goyal
[not found] ` <20120424155843.GG26708-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-25 2:42 ` Fengguang Wu
2012-04-25 2:42 ` Fengguang Wu
2012-04-25 2:42 ` Fengguang Wu
2012-04-25 2:42 ` Fengguang Wu
[not found] ` <20120424145655.GA1474-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-24 15:58 ` Vivek Goyal
2012-04-25 3:16 ` Fengguang Wu
2012-04-25 3:16 ` Fengguang Wu
2012-04-25 9:01 ` Jan Kara
2012-04-25 9:01 ` Jan Kara
2012-04-25 9:01 ` Jan Kara
[not found] ` <20120425090156.GB12568-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-25 12:05 ` Fengguang Wu
2012-04-25 12:05 ` Fengguang Wu
2012-04-25 9:01 ` Jan Kara
[not found] ` <20120416145744.GA15437-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-24 11:33 ` Fengguang Wu
2012-04-16 14:57 ` Vivek Goyal
2012-04-15 11:37 ` [Lsf] " Peter Zijlstra
2012-04-15 11:37 ` Peter Zijlstra
2012-04-15 11:37 ` Peter Zijlstra
[not found] ` <20120412203719.GL2207-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-12 20:51 ` Tejun Heo
2012-04-15 11:37 ` [Lsf] " Peter Zijlstra
2012-04-17 22:01 ` Tejun Heo
2012-04-17 22:01 ` Tejun Heo
2012-04-17 22:01 ` Tejun Heo
2012-04-17 22:01 ` Tejun Heo
2012-04-18 6:30 ` Jan Kara
2012-04-18 6:30 ` Jan Kara
[not found] ` <20120417220106.GF19975-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-18 6:30 ` Jan Kara
2012-04-14 12:25 ` [Lsf] " Peter Zijlstra
2012-04-14 12:25 ` Peter Zijlstra
2012-04-14 12:25 ` Peter Zijlstra
2012-04-16 12:54 ` Vivek Goyal
2012-04-16 12:54 ` Vivek Goyal
2012-04-16 12:54 ` Vivek Goyal
2012-04-16 13:07 ` Fengguang Wu
2012-04-16 13:07 ` Fengguang Wu
2012-04-16 14:19 ` Fengguang Wu
2012-04-16 14:19 ` Fengguang Wu
2012-04-16 14:19 ` Fengguang Wu
2012-04-16 15:52 ` Vivek Goyal
2012-04-16 15:52 ` Vivek Goyal
2012-04-16 15:52 ` Vivek Goyal
[not found] ` <20120416155207.GB15437-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-17 2:14 ` Fengguang Wu
2012-04-17 2:14 ` Fengguang Wu
2012-04-17 2:14 ` Fengguang Wu
[not found] ` <20120416125432.GB12776-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-16 13:07 ` Fengguang Wu
[not found] ` <20120403183655.GA23106-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-04-04 14:51 ` Vivek Goyal
2012-04-04 17:51 ` Fengguang Wu
2012-04-04 17:51 ` Fengguang Wu
2012-04-04 17:51 ` Fengguang Wu
2012-04-04 18:35 ` Vivek Goyal [this message]
2012-04-04 18:35 ` Vivek Goyal
[not found] ` <20120404183528.GJ12676-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-04 21:42 ` Fengguang Wu
2012-04-04 21:42 ` Fengguang Wu
2012-04-04 21:42 ` Fengguang Wu
2012-04-05 15:10 ` Vivek Goyal
2012-04-05 15:10 ` Vivek Goyal
[not found] ` <20120405151026.GB23999-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-06 0:32 ` Fengguang Wu
2012-04-06 0:32 ` Fengguang Wu
2012-04-06 0:32 ` Fengguang Wu
2012-04-05 15:10 ` Vivek Goyal
2012-04-04 18:35 ` Vivek Goyal
2012-04-04 19:33 ` Tejun Heo
2012-04-04 19:33 ` Tejun Heo
2012-04-04 19:33 ` Tejun Heo
2012-04-06 9:59 ` Fengguang Wu
2012-04-06 9:59 ` Fengguang Wu
2012-04-06 9:59 ` Fengguang Wu
2012-04-17 22:38 ` Tejun Heo
2012-04-17 22:38 ` Tejun Heo
2012-04-17 22:38 ` Tejun Heo
2012-04-17 22:38 ` Tejun Heo
2012-04-19 14:23 ` Fengguang Wu
2012-04-19 14:23 ` Fengguang Wu
2012-04-19 14:23 ` Fengguang Wu
2012-04-19 18:31 ` Vivek Goyal
2012-04-19 18:31 ` Vivek Goyal
[not found] ` <20120419183118.GM10216-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-20 12:45 ` Fengguang Wu
2012-04-20 12:45 ` Fengguang Wu
2012-04-20 12:45 ` Fengguang Wu
2012-04-20 19:29 ` Vivek Goyal
2012-04-20 19:29 ` Vivek Goyal
2012-04-20 21:33 ` Tejun Heo
2012-04-20 21:33 ` Tejun Heo
2012-04-22 14:26 ` Fengguang Wu
2012-04-22 14:26 ` Fengguang Wu
[not found] ` <20120420213301.GA29134-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-22 14:26 ` Fengguang Wu
2012-04-23 12:30 ` Vivek Goyal
2012-04-23 12:30 ` Vivek Goyal
2012-04-23 12:30 ` Vivek Goyal
2012-04-23 16:04 ` Tejun Heo
2012-04-23 16:04 ` Tejun Heo
[not found] ` <20120423123011.GA8103-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-23 16:04 ` Tejun Heo
[not found] ` <20120420192930.GR22419-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-20 21:33 ` Tejun Heo
2012-04-20 19:29 ` Vivek Goyal
2012-04-19 18:31 ` Vivek Goyal
2012-04-19 20:26 ` Jan Kara
2012-04-19 20:26 ` Jan Kara
2012-04-19 20:26 ` Jan Kara
2012-04-20 13:34 ` Fengguang Wu
2012-04-20 13:34 ` Fengguang Wu
2012-04-20 19:08 ` Tejun Heo
2012-04-20 19:08 ` Tejun Heo
2012-04-20 19:08 ` Tejun Heo
[not found] ` <20120420190844.GH32324-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-22 14:46 ` Fengguang Wu
2012-04-22 14:46 ` Fengguang Wu
2012-04-22 14:46 ` Fengguang Wu
2012-04-22 14:46 ` Fengguang Wu
2012-04-23 16:56 ` Tejun Heo
2012-04-23 16:56 ` Tejun Heo
2012-04-23 16:56 ` Tejun Heo
[not found] ` <20120423165626.GB5406-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-24 7:58 ` Fengguang Wu
2012-04-24 7:58 ` Fengguang Wu
2012-04-24 7:58 ` Fengguang Wu
2012-04-25 15:47 ` Tejun Heo
2012-04-25 15:47 ` Tejun Heo
2012-04-25 15:47 ` Tejun Heo
2012-04-23 9:14 ` Jan Kara
2012-04-23 9:14 ` Jan Kara
2012-04-23 9:14 ` Jan Kara
2012-04-23 10:24 ` Fengguang Wu
2012-04-23 10:24 ` Fengguang Wu
2012-04-23 12:42 ` Jan Kara
2012-04-23 12:42 ` Jan Kara
2012-04-23 14:31 ` Fengguang Wu
2012-04-23 14:31 ` Fengguang Wu
[not found] ` <20120423124240.GE6512-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-23 14:31 ` Fengguang Wu
2012-04-23 12:42 ` Jan Kara
[not found] ` <20120423091432.GC6512-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-23 10:24 ` Fengguang Wu
[not found] ` <20120419202635.GA4795-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-20 13:34 ` Fengguang Wu
[not found] ` <20120417223854.GG19975-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-19 14:23 ` Fengguang Wu
2012-04-18 6:57 ` Jan Kara
2012-04-18 6:57 ` Jan Kara
2012-04-18 7:58 ` Fengguang Wu
2012-04-18 7:58 ` Fengguang Wu
2012-04-18 7:58 ` Fengguang Wu
[not found] ` <20120418065720.GA21485-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
2012-04-18 7:58 ` Fengguang Wu
2012-04-18 6:57 ` Jan Kara
[not found] ` <20120404193355.GD29686-RcKxWJ4Cfj1J2suj2OqeGauc2jM2gXBXkQQo+JxHRPFibQn6LdNjmg@public.gmane.org>
2012-04-04 20:18 ` Vivek Goyal
2012-04-04 20:18 ` Vivek Goyal
2012-04-04 20:18 ` Vivek Goyal
2012-04-05 16:31 ` Tejun Heo
2012-04-05 16:31 ` Tejun Heo
2012-04-05 17:09 ` Vivek Goyal
2012-04-05 17:09 ` Vivek Goyal
[not found] ` <20120405163113.GD12854-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-04-05 17:09 ` Vivek Goyal
[not found] ` <20120404201816.GL12676-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-05 16:31 ` Tejun Heo
2012-04-06 9:59 ` Fengguang Wu
2012-04-03 18:36 Tejun Heo
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