From: Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: menage-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
virtualization-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Jeff Moyer <jmoyer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
jens.axboe-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
balbir-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org,
ngupta-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
fernando-gVGce1chcLdL9jVzuh4AOg@public.gmane.org,
Andrea Righi
<righi.andrea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [patch 0/4] [RFC] Another proportional weight IO controller
Date: Thu, 06 Nov 2008 11:47:47 -0500 [thread overview]
Message-ID: <49131FB3.4060807@redhat.com> (raw)
In-Reply-To: <1225988173.7803.4723.camel@twins>
Peter Zijlstra wrote:
> Nice, although I would think only doing the higher level devices makes
> more sense than only doing the leafs.
I'm not convinced.
Say that you have two resource groups on a bunch of LVM
volumes across two disks.
If one of the resource groups only sends requests to one
of the disks, the other resource group should be able to
get all of its requests through immediateley at the other
disk.
Holding up the second resource group's requests could
result in a disk being idle. Worse, once that cgroup's
requests finally make it through, the other cgroup might
also want to use the disk and they both get slowed down.
When a resource is uncontended, should a potential user
be made to wait?
--
All rights reversed.
next prev parent reply other threads:[~2008-11-06 16:47 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20081106153022.215696930@redhat.com>
2008-11-06 15:30 ` [patch 1/4] io controller: documentation vgoyal-H+wXaHxf7aLQT0dZR+AlfA
2008-11-06 15:30 ` [patch 2/4] io controller: biocgroup implementation vgoyal-H+wXaHxf7aLQT0dZR+AlfA
2008-11-06 15:30 ` [patch 3/4] io controller: Core IO controller implementation logic vgoyal-H+wXaHxf7aLQT0dZR+AlfA
2008-11-06 15:30 ` [patch 4/4] io controller: Put IO controller to use in device mapper and standard make_request() function vgoyal-H+wXaHxf7aLQT0dZR+AlfA
[not found] ` <1225986593.7803.4688.camel@twins>
2008-11-06 16:01 ` [patch 0/4] [RFC] Another proportional weight IO controller Vivek Goyal
[not found] ` <20081106160154.GA7461@redhat.com>
[not found] ` <20081106160154.GA7461-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 16:16 ` Peter Zijlstra
[not found] ` <1225988173.7803.4723.camel@twins>
2008-11-06 16:39 ` Vivek Goyal
2008-11-06 16:47 ` Rik van Riel [this message]
[not found] ` <20081106163957.GB7461@redhat.com>
[not found] ` <20081106163957.GB7461-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 16:52 ` Peter Zijlstra
[not found] ` <1225990327.7803.4776.camel@twins>
2008-11-06 16:57 ` Rik van Riel
2008-11-06 17:08 ` Vivek Goyal
[not found] ` <20081106170830.GD7461@redhat.com>
[not found] ` <20081106170830.GD7461-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 23:07 ` Nauman Rafique
[not found] ` <e98e18940811061507t3e19183byf2b8b291458ba81b@mail.gmail.com>
[not found] ` <e98e18940811061507t3e19183byf2b8b291458ba81b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-07 14:19 ` Vivek Goyal
[not found] ` <20081107141943.GC21884-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-07 21:36 ` Nauman Rafique
[not found] ` <e98e18940811071336n58a073d8w2cbaeddd5657d1e9@mail.gmail.com>
[not found] ` <e98e18940811071336n58a073d8w2cbaeddd5657d1e9-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-10 14:11 ` Vivek Goyal
[not found] ` <20081110141143.GC26956@redhat.com>
[not found] ` <20081110141143.GC26956-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-11 19:55 ` Nauman Rafique
[not found] ` <e98e18940811111155q4bd73480pebe088fa1adbe2e4@mail.gmail.com>
[not found] ` <e98e18940811111155q4bd73480pebe088fa1adbe2e4-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-11 22:30 ` Vivek Goyal
[not found] ` <20081111223024.GA31527@redhat.com>
[not found] ` <20081111223024.GA31527-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-12 21:20 ` Nauman Rafique
[not found] ` <e98e18940811121320w5f321302n13b526887cbb4012@mail.gmail.com>
[not found] ` <e98e18940811121320w5f321302n13b526887cbb4012-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-13 13:49 ` Fabio Checconi
[not found] ` <491321ED.5010103@redhat.com>
[not found] ` <491321ED.5010103-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 17:11 ` Peter Zijlstra
[not found] ` <1225991487.7803.4801.camel@twins>
2008-11-07 0:41 ` Dave Chinner
[not found] ` <20081107004131.GD2373@disturbed>
2008-11-07 10:31 ` Peter Zijlstra
[not found] ` <1226053904.7803.5856.camel@twins>
2008-11-09 9:40 ` Dave Chinner
[not found] ` <20081106153022.215696930-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 15:49 ` Peter Zijlstra
2008-11-07 2:36 ` Gui Jianfeng
2008-11-13 9:05 ` Ryo Tsuruta
[not found] ` <20081106153135.790621895@redhat.com>
[not found] ` <20081106153135.790621895-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-07 2:50 ` [patch 2/4] io controller: biocgroup implementation KAMEZAWA Hiroyuki
[not found] ` <20081107115030.7ccf3f07.kamezawa.hiroyu@jp.fujitsu.com>
[not found] ` <20081107115030.7ccf3f07.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2008-11-07 4:19 ` Hirokazu Takahashi
2008-11-07 14:44 ` Vivek Goyal
[not found] ` <4913A9C2.8060904@cn.fujitsu.com>
[not found] ` <4913A9C2.8060904-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2008-11-07 13:38 ` [patch 0/4] [RFC] Another proportional weight IO controller Vivek Goyal
[not found] ` <20081106153135.743458085@redhat.com>
[not found] ` <20081107113209.a6011c67.kamezawa.hiroyu@jp.fujitsu.com>
[not found] ` <20081107113209.a6011c67.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2008-11-07 14:27 ` [patch 1/4] io controller: documentation Vivek Goyal
[not found] ` <20081106153135.743458085-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-07 2:32 ` KAMEZAWA Hiroyuki
2008-11-07 3:46 ` KAMEZAWA Hiroyuki
2008-11-10 2:48 ` Li Zefan
[not found] ` <4917A116.7040603@cn.fujitsu.com>
[not found] ` <4917A116.7040603-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2008-11-10 13:44 ` Vivek Goyal
[not found] ` <20081106153135.869625751@redhat.com>
[not found] ` <20081107122145.69500cd3.kamezawa.hiroyu@jp.fujitsu.com>
[not found] ` <20081107122145.69500cd3.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2008-11-07 14:50 ` [patch 3/4] io controller: Core IO controller implementation logic Vivek Goyal
[not found] ` <20081107145036.GF21884@redhat.com>
[not found] ` <20081107145036.GF21884-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-08 2:35 ` [patch 3/4] io controller: Core IO controller implementationlogic KAMEZAWA Hiroyuki
[not found] ` <20081106153135.869625751-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-07 3:21 ` [patch 3/4] io controller: Core IO controller implementation logic KAMEZAWA Hiroyuki
2008-11-11 8:50 ` Gui Jianfeng
[not found] ` <20081113.180558.519459540419535699.ryov@valinux.co.jp>
[not found] ` <20081113155834.GE7542@redhat.com>
[not found] ` <af41c7c40811131041t1b8491b6la5574ebe75f89000@mail.gmail.com>
[not found] ` <20081113214642.GG7542@redhat.com>
[not found] ` <af41c7c40811131457w472e4a86tb5344cc1d3d366fb@mail.gmail.com>
[not found] ` <af41c7c40811131457w472e4a86tb5344cc1d3d366fb-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-14 16:05 ` [patch 0/4] [RFC] Another proportional weight IO controller Vivek Goyal
[not found] ` <20081114160525.GE24624@redhat.com>
[not found] ` <20081114160525.GE24624-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-14 22:44 ` Nauman Rafique
[not found] ` <e98e18940811141444u5947b806v27fac453ed1e8a5@mail.gmail.com>
[not found] ` <e98e18940811141444u5947b806v27fac453ed1e8a5-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-17 14:23 ` Vivek Goyal
[not found] ` <20081117142309.GA15564@redhat.com>
[not found] ` <20081117142309.GA15564-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-18 2:02 ` Li Zefan
[not found] ` <4922224A.5030502@cn.fujitsu.com>
[not found] ` <4922224A.5030502-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2008-11-18 5:01 ` Nauman Rafique
[not found] ` <e98e18940811172101na345b6bh5c73f9e657aac5a7@mail.gmail.com>
[not found] ` <e98e18940811172101na345b6bh5c73f9e657aac5a7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-18 7:42 ` Li Zefan
2008-11-18 12:05 ` Fabio Checconi
[not found] ` <20081118120508.GD15268@gandalf.sssup.it>
[not found] ` <20081118120508.GD15268-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-18 14:07 ` Vivek Goyal
2008-11-18 22:33 ` Nauman Rafique
[not found] ` <20081118140751.GA4283@redhat.com>
[not found] ` <20081118140751.GA4283-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-18 14:41 ` Fabio Checconi
[not found] ` <20081118144139.GE15268@gandalf.sssup.it>
[not found] ` <20081118144139.GE15268-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-18 19:12 ` Jens Axboe
2008-11-20 21:31 ` Vivek Goyal
[not found] ` <20081118191208.GJ26308@kernel.dk>
[not found] ` <20081118191208.GJ26308-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2008-11-18 19:47 ` Vivek Goyal
2008-11-18 21:14 ` Fabio Checconi
2008-11-18 23:07 ` Nauman Rafique
[not found] ` <e98e18940811181507t6b1473act2efa23df21dab270@mail.gmail.com>
[not found] ` <e98e18940811181507t6b1473act2efa23df21dab270-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-19 14:24 ` Jens Axboe
[not found] ` <20081119142446.GH26308@kernel.dk>
[not found] ` <20081119142446.GH26308-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2008-11-20 0:12 ` Divyesh Shah
[not found] ` <af41c7c40811191612v5db13ae7n3cfe537beb6a157c@mail.gmail.com>
[not found] ` <af41c7c40811191612v5db13ae7n3cfe537beb6a157c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-20 8:16 ` Jens Axboe
[not found] ` <20081120081640.GE26308@kernel.dk>
[not found] ` <20081120081640.GE26308-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2008-11-20 13:40 ` Vivek Goyal
[not found] ` <20081120134058.GA29306@redhat.com>
[not found] ` <20081120134058.GA29306-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-20 19:54 ` Nauman Rafique
2008-11-26 6:40 ` Fernando Luis Vázquez Cao
[not found] ` <e98e18940811201154l6fb0499x24da39812fb2aa7e@mail.gmail.com>
[not found] ` <e98e18940811201154l6fb0499x24da39812fb2aa7e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-20 21:15 ` Vivek Goyal
[not found] ` <20081120211536.GG29306@redhat.com>
[not found] ` <20081120211536.GG29306-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-20 22:42 ` Nauman Rafique
[not found] ` <e98e18940811201442s787a346em4ada30bcb1badfe6@mail.gmail.com>
[not found] ` <e98e18940811201442s787a346em4ada30bcb1badfe6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-21 15:22 ` Vivek Goyal
[not found] ` <1227681618.12997.163.camel@sebastian.kern.oss.ntt.co.jp>
[not found] ` <1227681618.12997.163.camel-xpvPi5bcW5X5OjGIXfuPlhrrLbDL3r4M6qtp775pBPw@public.gmane.org>
2008-11-26 15:18 ` Vivek Goyal
[not found] ` <20081118211442.GG15268@gandalf.sssup.it>
[not found] ` <4923716A.5090104@gelato.unsw.edu.au>
[not found] ` <4923716A.5090104-M3ycANVxPotyL3EAZA59ERCuuivNXqWP@public.gmane.org>
2008-11-19 10:17 ` Fabio Checconi
[not found] ` <20081119101701.GA20915@gandalf.sssup.it>
[not found] ` <20081119101701.GA20915-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-19 11:06 ` Fabio Checconi
[not found] ` <20081119110655.GC20915-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-20 4:45 ` Aaron Carroll
[not found] ` <4924EB4E.7050600@gelato.unsw.edu.au>
[not found] ` <4924EB4E.7050600-M3ycANVxPotyL3EAZA59ERCuuivNXqWP@public.gmane.org>
2008-11-20 6:56 ` Fabio Checconi
[not found] ` <20081118211442.GG15268-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-19 1:52 ` Aaron Carroll
2008-11-19 14:30 ` Jens Axboe
[not found] ` <20081119143006.GI26308@kernel.dk>
[not found] ` <20081119143006.GI26308-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2008-11-19 15:52 ` Fabio Checconi
[not found] ` <20081120213155.GI29306@redhat.com>
[not found] ` <20081120213155.GI29306-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-21 3:05 ` Fabio Checconi
[not found] ` <20081121030533.GA30883@gandalf.sssup.it>
[not found] ` <20081121030533.GA30883-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org>
2008-11-21 14:58 ` Vivek Goyal
[not found] ` <20081121145823.GD3111@redhat.com>
[not found] ` <20081121145823.GD3111-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-21 15:21 ` Fabio Checconi
[not found] ` <e98e18940811181433o4bb5a147i1e0b9c1baf495ae2@mail.gmail.com>
[not found] ` <e98e18940811181433o4bb5a147i1e0b9c1baf495ae2-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-18 23:44 ` Fabio Checconi
2008-11-19 7:09 ` Paolo Valente
[not found] ` <492271EF.4050002@cn.fujitsu.com>
[not found] ` <492271EF.4050002-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2008-11-18 22:23 ` Nauman Rafique
[not found] ` <20081113221304.GH7542@redhat.com>
[not found] ` <20081113221304.GH7542-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-20 9:20 ` Ryo Tsuruta
[not found] ` <20081120.182053.220301508585579959.ryov@valinux.co.jp>
[not found] ` <20081120.182053.220301508585579959.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org>
2008-11-20 13:47 ` Vivek Goyal
[not found] ` <20081120134701.GB29306@redhat.com>
[not found] ` <20081120134701.GB29306-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-25 2:33 ` Ryo Tsuruta
[not found] ` <20081125.113359.623571555980951312.ryov@valinux.co.jp>
[not found] ` <20081125.113359.623571555980951312.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org>
2008-11-25 16:27 ` Vivek Goyal
[not found] ` <20081125162720.GH341@redhat.com>
[not found] ` <20081125162720.GH341-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-25 22:38 ` Nauman Rafique
2008-11-26 11:55 ` Fernando Luis Vázquez Cao
2008-11-26 12:47 ` Ryo Tsuruta
[not found] ` <e98e18940811251438v245f79aegfdc92bee737af64c@mail.gmail.com>
[not found] ` <e98e18940811251438v245f79aegfdc92bee737af64c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-26 14:06 ` Paolo Valente
[not found] ` <492D57E1.5090608@unimore.it>
[not found] ` <492D57E1.5090608-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2008-11-26 19:41 ` Nauman Rafique
[not found] ` <e98e18940811261141x307cf06fldd5e481e85da5c2d@mail.gmail.com>
[not found] ` <e98e18940811261141x307cf06fldd5e481e85da5c2d-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-26 22:21 ` Fabio Checconi
[not found] ` <20081126.214707.653026525707335397.ryov@valinux.co.jp>
[not found] ` <20081126.214707.653026525707335397.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org>
2008-11-26 16:08 ` Vivek Goyal
[not found] ` <20081126160805.GE27826@redhat.com>
[not found] ` <1227775382.7443.43.camel@sebastian.kern.oss.ntt.co.jp>
[not found] ` <1227775382.7443.43.camel-xpvPi5bcW5X5OjGIXfuPlhrrLbDL3r4M6qtp775pBPw@public.gmane.org>
2008-11-28 3:09 ` Ryo Tsuruta
[not found] ` <20081126160805.GE27826-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-27 8:43 ` Fernando Luis Vázquez Cao
2008-11-28 13:33 ` Ryo Tsuruta
2008-11-06 15:30 vgoyal-H+wXaHxf7aLQT0dZR+AlfA
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