From: jim owens <jowens@hp.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com>, Ingo Molnar <mingo@elte.hu>, Mike Galbraith <efault@gmx.de>, Vivek Goyal <vgoyal@redhat.com>, Ulrich Lukas <stellplatz-nr.13a@datenparkplatz.de>, linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org, dm-devel@redhat.com, nauman@google.com, dpshah@google.com, lizf@cn.fujitsu.com, mikew@google.com, fchecconi@gmail.com, paolo.valente@unimore.it, ryov@valinux.co.jp, fernando@oss.ntt.co.jp, jmoyer@redhat.com, dhaval@linux.vnet.ibm.com, balbir@linux.vnet.ibm.com, righi.andrea@gmail.com, m-ikeda@ds.jp.nec.com, agk@redhat.com, akpm@linux-foundation.org, peterz@infradead.org, jmarchan@redhat.com, riel@redhat.com Subject: Re: IO scheduler based IO controller V10 Date: Fri, 02 Oct 2009 12:01:08 -0400 [thread overview] Message-ID: <4AC623C4.5050003@hp.com> (raw) In-Reply-To: <alpine.LFD.2.01.0910020811490.6996@localhost.localdomain> Linus Torvalds wrote: > > I really think we should do latency first, and throughput second. Agree. > It's _easy_ to get throughput. The people who care just about throughput > can always just disable all the work we do for latency. But in my experience it is not that simple... The argument latency vs throughput or desktop vs server is wrong. I/O can never keep up with the ability of CPUs to dirty data. On desktops and servers (really many-user-desktops) we want minimum latency but the enemy is dirty VM. If we ignore the need for throughput to flush dirty pages, VM gets angry and forced VM page cleaning I/O is bad I/O. We want min latency with low dirty page percent but need to switch to max write throughput at some high dirty page percent. We can not prevent the cliff we fall off where the system chokes because the dirty page load is too high, but if we only worry about latency, we bring that choke point cliff in so it happens with a lower load. A 10% lower overload point might be fine to get 100% better latency, but would desktop users accept a 50% lower overload point where running one more application makes the system appear hung? Even desktop users commonly measure "how much work can I do before the system becomes unresponsive". jim
WARNING: multiple messages have this Message-ID (diff)
From: jim owens <jowens@hp.com> To: Linus Torvalds <torvalds@linux-foundation.org> Cc: dhaval@linux.vnet.ibm.com, peterz@infradead.org, dm-devel@redhat.com, dpshah@google.com, Jens Axboe <jens.axboe@oracle.com>, agk@redhat.com, balbir@linux.vnet.ibm.com, paolo.valente@unimore.it, jmarchan@redhat.com, fernando@oss.ntt.co.jp, Ulrich Lukas <stellplatz-nr.13a@datenparkplatz.de>, mikew@google.com, jmoyer@redhat.com, nauman@google.com, Ingo Molnar <mingo@elte.hu>, Vivek Goyal <vgoyal@redhat.com>, m-ikeda@ds.jp.nec.com, riel@redhat.com, lizf@cn.fujitsu.com, fchecconi@gmail.com, containers@lists.linux-foundation.org, Mike Galbraith <efault@gmx.de>, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, righi.andrea@gmail.com Subject: Re: IO scheduler based IO controller V10 Date: Fri, 02 Oct 2009 12:01:08 -0400 [thread overview] Message-ID: <4AC623C4.5050003@hp.com> (raw) In-Reply-To: <alpine.LFD.2.01.0910020811490.6996@localhost.localdomain> Linus Torvalds wrote: > > I really think we should do latency first, and throughput second. Agree. > It's _easy_ to get throughput. The people who care just about throughput > can always just disable all the work we do for latency. But in my experience it is not that simple... The argument latency vs throughput or desktop vs server is wrong. I/O can never keep up with the ability of CPUs to dirty data. On desktops and servers (really many-user-desktops) we want minimum latency but the enemy is dirty VM. If we ignore the need for throughput to flush dirty pages, VM gets angry and forced VM page cleaning I/O is bad I/O. We want min latency with low dirty page percent but need to switch to max write throughput at some high dirty page percent. We can not prevent the cliff we fall off where the system chokes because the dirty page load is too high, but if we only worry about latency, we bring that choke point cliff in so it happens with a lower load. A 10% lower overload point might be fine to get 100% better latency, but would desktop users accept a 50% lower overload point where running one more application makes the system appear hung? Even desktop users commonly measure "how much work can I do before the system becomes unresponsive". jim
next prev parent reply other threads:[~2009-10-02 16:12 UTC|newest] Thread overview: 466+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-09-24 19:25 IO scheduler based IO controller V10 Vivek Goyal 2009-09-24 19:25 ` [PATCH 01/28] io-controller: Documentation Vivek Goyal 2009-09-24 19:25 ` [PATCH 02/28] io-controller: Core of the elevator fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 03/28] io-controller: Keep a cache of recently expired queues Vivek Goyal 2009-09-24 19:25 ` [PATCH 04/28] io-controller: Common flat fair queuing code in elevaotor layer Vivek Goyal 2009-09-24 19:25 ` [PATCH 05/28] io-controller: Modify cfq to make use of flat elevator fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 06/28] io-controller: Core scheduler changes to support hierarhical scheduling Vivek Goyal 2009-09-24 19:25 ` [PATCH 07/28] io-controller: cgroup related changes for hierarchical group support Vivek Goyal 2009-09-24 19:25 ` [PATCH 08/28] io-controller: Common hierarchical fair queuing code in elevaotor layer Vivek Goyal 2009-09-24 19:25 ` [PATCH 09/28] io-controller: cfq changes to use " Vivek Goyal 2009-09-24 19:25 ` [PATCH 10/28] io-controller: Export disk time used and nr sectors dipatched through cgroups Vivek Goyal 2009-09-24 19:25 ` [PATCH 11/28] io-controller: Debug hierarchical IO scheduling Vivek Goyal 2009-09-24 19:25 ` [PATCH 12/28] io-controller: Introduce group idling Vivek Goyal 2009-09-24 19:25 ` [PATCH 13/28] io-controller: Implement wait busy for io queues Vivek Goyal 2009-09-24 19:25 ` [PATCH 14/28] io-controller: Keep track of late preemptions Vivek Goyal 2009-09-24 19:25 ` [PATCH 15/28] io-controller: Allow CFQ specific extra preemptions Vivek Goyal 2009-09-25 6:24 ` Gui Jianfeng 2009-09-25 6:24 ` Gui Jianfeng [not found] ` <1253820332-10246-16-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-25 6:24 ` Gui Jianfeng 2009-09-24 19:25 ` [PATCH 16/28] io-controller: Wait for requests to complete from last queue before new queue is scheduled Vivek Goyal 2009-09-24 19:25 ` [PATCH 17/28] io-controller: Separate out queue and data Vivek Goyal 2009-09-24 19:25 ` [PATCH 18/28] io-conroller: Prepare elevator layer for single queue schedulers Vivek Goyal 2009-09-24 19:25 ` [PATCH 20/28] io-controller: noop changes for hierarchical fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 21/28] io-controller: deadline " Vivek Goyal 2009-09-24 19:25 ` [PATCH 22/28] io-controller: anticipatory " Vivek Goyal 2009-09-24 19:25 ` [PATCH 23/28] io-controller: blkio_cgroup patches from Ryo to track async bios Vivek Goyal 2009-09-24 19:25 ` [PATCH 24/28] io-controller: map async requests to appropriate cgroup Vivek Goyal [not found] ` <1253820332-10246-1-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-24 19:25 ` [PATCH 01/28] io-controller: Documentation Vivek Goyal 2009-09-24 19:25 ` [PATCH 02/28] io-controller: Core of the elevator fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 03/28] io-controller: Keep a cache of recently expired queues Vivek Goyal 2009-09-24 19:25 ` [PATCH 04/28] io-controller: Common flat fair queuing code in elevaotor layer Vivek Goyal 2009-09-24 19:25 ` [PATCH 05/28] io-controller: Modify cfq to make use of flat elevator fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 06/28] io-controller: Core scheduler changes to support hierarhical scheduling Vivek Goyal 2009-09-24 19:25 ` [PATCH 07/28] io-controller: cgroup related changes for hierarchical group support Vivek Goyal 2009-09-24 19:25 ` [PATCH 08/28] io-controller: Common hierarchical fair queuing code in elevaotor layer Vivek Goyal 2009-09-24 19:25 ` [PATCH 09/28] io-controller: cfq changes to use " Vivek Goyal 2009-09-24 19:25 ` [PATCH 10/28] io-controller: Export disk time used and nr sectors dipatched through cgroups Vivek Goyal 2009-09-24 19:25 ` [PATCH 11/28] io-controller: Debug hierarchical IO scheduling Vivek Goyal 2009-09-24 19:25 ` [PATCH 12/28] io-controller: Introduce group idling Vivek Goyal 2009-09-24 19:25 ` [PATCH 13/28] io-controller: Implement wait busy for io queues Vivek Goyal 2009-09-24 19:25 ` [PATCH 14/28] io-controller: Keep track of late preemptions Vivek Goyal 2009-09-24 19:25 ` [PATCH 15/28] io-controller: Allow CFQ specific extra preemptions Vivek Goyal 2009-09-24 19:25 ` [PATCH 16/28] io-controller: Wait for requests to complete from last queue before new queue is scheduled Vivek Goyal 2009-09-24 19:25 ` [PATCH 17/28] io-controller: Separate out queue and data Vivek Goyal 2009-09-24 19:25 ` [PATCH 18/28] io-conroller: Prepare elevator layer for single queue schedulers Vivek Goyal 2009-09-24 19:25 ` [PATCH 19/28] io-controller: Avoid expiring ioq for single ioq scheduler if only root group Vivek Goyal 2009-09-24 19:25 ` Vivek Goyal 2009-09-24 19:25 ` [PATCH 20/28] io-controller: noop changes for hierarchical fair queuing Vivek Goyal 2009-09-24 19:25 ` [PATCH 21/28] io-controller: deadline " Vivek Goyal 2009-09-24 19:25 ` [PATCH 22/28] io-controller: anticipatory " Vivek Goyal 2009-09-24 19:25 ` [PATCH 23/28] io-controller: blkio_cgroup patches from Ryo to track async bios Vivek Goyal 2009-09-24 19:25 ` [PATCH 24/28] io-controller: map async requests to appropriate cgroup Vivek Goyal 2009-09-24 19:25 ` [PATCH 25/28] io-controller: Per cgroup request descriptor support Vivek Goyal 2009-09-24 19:25 ` [PATCH 26/28] io-controller: Per io group bdi congestion interface Vivek Goyal 2009-09-24 19:25 ` [PATCH 27/28] io-controller: Support per cgroup per device weights and io class Vivek Goyal 2009-09-24 19:25 ` [PATCH 28/28] io-controller: debug elevator fair queuing support Vivek Goyal 2009-09-24 21:33 ` IO scheduler based IO controller V10 Andrew Morton 2009-09-25 2:20 ` Ulrich Lukas 2009-09-29 0:37 ` Nauman Rafique 2009-09-24 19:25 ` [PATCH 25/28] io-controller: Per cgroup request descriptor support Vivek Goyal 2009-09-24 19:25 ` [PATCH 26/28] io-controller: Per io group bdi congestion interface Vivek Goyal 2009-09-24 19:25 ` [PATCH 27/28] io-controller: Support per cgroup per device weights and io class Vivek Goyal 2009-09-24 19:25 ` [PATCH 28/28] io-controller: debug elevator fair queuing support Vivek Goyal 2009-09-24 21:33 ` IO scheduler based IO controller V10 Andrew Morton 2009-09-24 21:33 ` Andrew Morton 2009-09-25 1:09 ` KAMEZAWA Hiroyuki [not found] ` <20090925100952.55c2dd7a.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> 2009-09-25 1:18 ` KAMEZAWA Hiroyuki 2009-09-25 4:14 ` Vivek Goyal 2009-09-25 1:18 ` KAMEZAWA Hiroyuki 2009-09-25 1:18 ` KAMEZAWA Hiroyuki 2009-09-25 5:29 ` Balbir Singh 2009-09-25 7:09 ` Ryo Tsuruta 2009-09-25 7:09 ` Ryo Tsuruta [not found] ` <20090925052911.GK4590-SINUvgVNF2CyUtPGxGje5AC/G2K4zDHf@public.gmane.org> 2009-09-25 7:09 ` Ryo Tsuruta [not found] ` <20090925101821.1de8091a.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> 2009-09-25 5:29 ` Balbir Singh 2009-09-25 4:14 ` Vivek Goyal 2009-09-25 4:14 ` Vivek Goyal 2009-09-25 5:04 ` Vivek Goyal 2009-09-25 5:04 ` Vivek Goyal [not found] ` <20090925050429.GB12555-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-25 9:07 ` Ryo Tsuruta 2009-09-25 9:07 ` Ryo Tsuruta 2009-09-25 9:07 ` Ryo Tsuruta 2009-09-25 14:33 ` Vivek Goyal 2009-09-25 14:33 ` Vivek Goyal [not found] ` <20090925143337.GA15007-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-28 7:30 ` Ryo Tsuruta 2009-09-28 7:30 ` Ryo Tsuruta [not found] ` <20090925.180724.104041942.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-25 14:33 ` Vivek Goyal 2009-09-25 15:04 ` Rik van Riel 2009-09-25 15:04 ` Rik van Riel 2009-09-25 15:04 ` Rik van Riel 2009-09-28 7:38 ` Ryo Tsuruta 2009-09-28 7:38 ` Ryo Tsuruta [not found] ` <4ABCDBFF.1020203-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-28 7:38 ` Ryo Tsuruta 2009-10-08 4:42 ` More performance numbers (Was: Re: IO scheduler based IO controller V10) Vivek Goyal 2009-10-08 4:42 ` Vivek Goyal 2009-10-08 8:34 ` Andrea Righi 2009-10-08 8:34 ` Andrea Righi [not found] ` <20091008044251.GA3490-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-08 8:34 ` Andrea Righi [not found] ` <20090924143315.781cd0ac.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> 2009-09-25 1:09 ` IO scheduler based IO controller V10 KAMEZAWA Hiroyuki 2009-09-25 5:04 ` Vivek Goyal 2009-10-08 4:42 ` More performance numbers (Was: Re: IO scheduler based IO controller V10) Vivek Goyal 2009-10-10 19:53 ` Performance numbers with IO throttling patches " Vivek Goyal 2009-10-10 19:53 ` Vivek Goyal 2009-10-10 19:53 ` Vivek Goyal [not found] ` <20091010195316.GB16510-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-10 22:27 ` Andrea Righi 2009-10-10 22:27 ` Andrea Righi 2009-10-10 22:27 ` Andrea Righi 2009-10-11 12:32 ` Vivek Goyal 2009-10-11 12:32 ` Vivek Goyal 2009-10-12 21:11 ` Vivek Goyal 2009-10-12 21:11 ` Vivek Goyal 2009-10-17 15:18 ` Andrea Righi [not found] ` <20091012211120.GE7152-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-17 15:18 ` Andrea Righi 2009-10-12 21:11 ` Vivek Goyal 2009-09-25 2:20 ` IO scheduler based IO controller V10 Ulrich Lukas [not found] ` <4ABC28DE.7050809-7vBoImwI/YtIVYojq0lqJrNAH6kLmebB@public.gmane.org> 2009-09-25 20:26 ` Vivek Goyal 2009-09-25 20:26 ` Vivek Goyal 2009-09-25 20:26 ` Vivek Goyal 2009-09-26 14:51 ` Mike Galbraith [not found] ` <1253976676.7005.40.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-27 6:55 ` Mike Galbraith 2009-09-27 6:55 ` Mike Galbraith [not found] ` <1254034500.7933.6.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-27 16:42 ` Jens Axboe 2009-09-27 16:42 ` Jens Axboe [not found] ` <20090927164235.GA23126-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-09-27 18:15 ` Mike Galbraith 2009-09-30 19:58 ` Mike Galbraith 2009-09-27 18:15 ` Mike Galbraith 2009-09-28 4:04 ` Mike Galbraith 2009-09-28 5:55 ` Mike Galbraith 2009-09-28 17:48 ` Vivek Goyal 2009-09-28 17:48 ` Vivek Goyal 2009-09-28 18:24 ` Mike Galbraith [not found] ` <20090928174809.GB3643-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-28 18:24 ` Mike Galbraith [not found] ` <1254110648.7683.3.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-28 5:55 ` Mike Galbraith 2009-09-28 17:48 ` Vivek Goyal [not found] ` <1254075359.7354.66.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-28 4:04 ` Mike Galbraith 2009-09-30 19:58 ` Mike Galbraith [not found] ` <1254340730.7695.32.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-30 20:05 ` Mike Galbraith 2009-09-30 20:05 ` Mike Galbraith 2009-09-30 20:24 ` Vivek Goyal 2009-09-30 20:24 ` Vivek Goyal [not found] ` <20090930202447.GA28236-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-01 7:33 ` Mike Galbraith 2009-10-01 7:33 ` Mike Galbraith [not found] ` <1254382405.7595.9.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-01 18:58 ` Jens Axboe 2009-10-01 18:58 ` Jens Axboe 2009-10-02 6:23 ` Mike Galbraith [not found] ` <1254464628.7158.101.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 8:04 ` Jens Axboe 2009-10-02 8:04 ` Jens Axboe 2009-10-02 8:04 ` Jens Axboe 2009-10-02 8:53 ` Mike Galbraith [not found] ` <1254473609.6378.24.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 9:00 ` Mike Galbraith 2009-10-02 9:55 ` Jens Axboe 2009-10-02 9:00 ` Mike Galbraith 2009-10-02 9:55 ` Jens Axboe 2009-10-02 12:22 ` Mike Galbraith [not found] ` <20091002095555.GB26962-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 12:22 ` Mike Galbraith [not found] ` <20091002080417.GG14918-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 8:53 ` Mike Galbraith 2009-10-02 9:24 ` Ingo Molnar 2009-10-02 9:24 ` Ingo Molnar 2009-10-02 9:24 ` Ingo Molnar 2009-10-02 9:28 ` Jens Axboe 2009-10-02 9:28 ` Jens Axboe [not found] ` <20091002092839.GA26962-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 14:24 ` Linus Torvalds 2009-10-02 14:24 ` Linus Torvalds 2009-10-02 14:45 ` Mike Galbraith 2009-10-02 14:57 ` Jens Axboe [not found] ` <1254494742.7307.37.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 14:57 ` Jens Axboe 2009-10-02 14:56 ` Jens Axboe 2009-10-02 14:56 ` Jens Axboe 2009-10-02 15:14 ` Linus Torvalds 2009-10-02 15:14 ` Linus Torvalds 2009-10-02 16:01 ` jim owens [this message] 2009-10-02 16:01 ` jim owens 2009-10-02 17:11 ` Jens Axboe 2009-10-02 17:11 ` Jens Axboe 2009-10-02 17:20 ` Ingo Molnar 2009-10-02 17:20 ` Ingo Molnar 2009-10-02 17:25 ` Jens Axboe 2009-10-02 17:25 ` Jens Axboe 2009-10-02 17:28 ` Ingo Molnar 2009-10-02 17:28 ` Ingo Molnar [not found] ` <20091002172842.GA4884-X9Un+BFzKDI@public.gmane.org> 2009-10-02 17:37 ` Jens Axboe 2009-10-02 17:37 ` Jens Axboe [not found] ` <20091002173732.GK31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 17:56 ` Ingo Molnar 2009-10-02 18:13 ` Mike Galbraith 2009-10-02 17:56 ` Ingo Molnar 2009-10-02 17:56 ` Ingo Molnar [not found] ` <20091002175629.GA14860-X9Un+BFzKDI@public.gmane.org> 2009-10-02 18:04 ` Jens Axboe 2009-10-02 18:04 ` Jens Axboe [not found] ` <20091002180437.GL31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 18:22 ` Mike Galbraith 2009-10-02 18:36 ` Theodore Tso 2009-10-02 18:22 ` Mike Galbraith 2009-10-02 18:26 ` Jens Axboe 2009-10-02 18:33 ` Mike Galbraith [not found] ` <20091002182608.GO31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 18:33 ` Mike Galbraith [not found] ` <1254507754.8667.15.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 18:26 ` Jens Axboe 2009-10-02 18:36 ` Theodore Tso 2009-10-02 18:45 ` Jens Axboe 2009-10-02 18:45 ` Jens Axboe 2009-10-02 19:01 ` Ingo Molnar 2009-10-02 19:09 ` Jens Axboe 2009-10-02 19:09 ` Jens Axboe [not found] ` <20091002190110.GA25297-X9Un+BFzKDI@public.gmane.org> 2009-10-02 19:09 ` Jens Axboe [not found] ` <20091002184549.GS31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 19:01 ` Ingo Molnar [not found] ` <20091002183649.GE8161-3s7WtUTddSA@public.gmane.org> 2009-10-02 18:45 ` Jens Axboe 2009-10-02 18:13 ` Mike Galbraith 2009-10-02 18:19 ` Jens Axboe 2009-10-02 18:57 ` Mike Galbraith 2009-10-02 20:47 ` Mike Galbraith [not found] ` <1254509838.8667.30.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 20:47 ` Mike Galbraith 2009-10-03 5:48 ` Mike Galbraith 2009-10-03 5:56 ` Mike Galbraith 2009-10-03 6:31 ` tweaking IO latency [was Re: IO scheduler based IO controller V10] Mike Galbraith 2009-10-03 7:24 ` IO scheduler based IO controller V10 Jens Axboe 2009-10-03 9:00 ` Mike Galbraith 2009-10-03 9:12 ` Corrado Zoccolo 2009-10-03 9:12 ` Corrado Zoccolo [not found] ` <4e5e476b0910030212y50f97d97nc2e17c35d855cc63-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-10-03 13:18 ` Jens Axboe 2009-10-03 13:18 ` Jens Axboe 2009-10-03 13:18 ` Jens Axboe [not found] ` <1254560434.17052.14.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 9:12 ` Corrado Zoccolo 2009-10-03 13:17 ` Jens Axboe 2009-10-03 13:17 ` Jens Axboe 2009-10-03 13:17 ` Jens Axboe [not found] ` <20091003072401.GV31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 9:00 ` Mike Galbraith 2009-10-03 11:29 ` Vivek Goyal 2009-10-03 11:29 ` Vivek Goyal [not found] ` <20091003112915.GA12925-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-03 12:40 ` Do not overload dispatch queue (Was: Re: IO scheduler based IO controller V10) Vivek Goyal 2009-10-03 12:40 ` Vivek Goyal 2009-10-03 12:40 ` Vivek Goyal 2009-10-03 13:21 ` Jens Axboe [not found] ` <20091003132115.GB31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 13:56 ` Vivek Goyal 2009-10-03 13:56 ` Vivek Goyal 2009-10-03 13:56 ` Vivek Goyal 2009-10-03 14:02 ` Mike Galbraith [not found] ` <1254578553.7499.5.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 14:28 ` Jens Axboe 2009-10-03 14:28 ` Jens Axboe 2009-10-03 14:33 ` Mike Galbraith 2009-10-03 14:33 ` Mike Galbraith 2009-10-03 14:51 ` Mike Galbraith 2009-10-03 14:51 ` Mike Galbraith [not found] ` <1254581496.8293.8.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 15:14 ` Jens Axboe 2009-10-03 15:14 ` Jens Axboe 2009-10-03 15:14 ` Jens Axboe [not found] ` <20091003151445.GF31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 15:57 ` Mike Galbraith 2009-10-03 15:57 ` Mike Galbraith 2009-10-03 17:35 ` Jens Axboe 2009-10-03 17:35 ` Jens Axboe [not found] ` <20091003173532.GG31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 17:45 ` Linus Torvalds 2009-10-03 17:45 ` Linus Torvalds [not found] ` <alpine.LFD.2.01.0910031042560.6996-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org> 2009-10-03 17:51 ` Jens Axboe 2009-10-03 17:51 ` Jens Axboe 2009-10-03 19:07 ` Mike Galbraith 2009-10-03 19:07 ` Mike Galbraith 2009-10-03 19:07 ` Mike Galbraith 2009-10-03 19:11 ` Mike Galbraith 2009-10-03 19:11 ` Mike Galbraith 2009-10-03 19:23 ` Jens Axboe 2009-10-03 19:23 ` Jens Axboe 2009-10-03 19:49 ` Mike Galbraith 2009-10-03 19:49 ` Mike Galbraith 2009-10-04 10:50 ` Mike Galbraith 2009-10-04 11:33 ` Mike Galbraith [not found] ` <1254653434.7237.18.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-04 17:39 ` Jens Axboe 2009-10-04 17:39 ` Jens Axboe [not found] ` <20091004173901.GD26573-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-04 18:23 ` Mike Galbraith 2009-10-04 18:23 ` Mike Galbraith 2009-10-04 18:23 ` Mike Galbraith [not found] ` <1254680622.27889.2.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-04 18:38 ` Jens Axboe 2009-10-04 18:38 ` Jens Axboe 2009-10-04 18:38 ` Jens Axboe [not found] ` <20091004183822.GF26573-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-04 19:47 ` Mike Galbraith 2009-10-04 19:47 ` Mike Galbraith 2009-10-04 19:47 ` Mike Galbraith 2009-10-04 20:17 ` Jens Axboe 2009-10-04 20:17 ` Jens Axboe [not found] ` <20091004201708.GJ26573-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-04 22:15 ` Mike Galbraith 2009-10-04 22:15 ` Mike Galbraith 2009-10-04 22:15 ` Mike Galbraith [not found] ` <1254685638.7637.6.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-04 20:17 ` Jens Axboe [not found] ` <20091003192321.GA26573-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 19:49 ` Mike Galbraith [not found] ` <1254596864.7153.9.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 19:11 ` Mike Galbraith 2009-10-03 19:23 ` Jens Axboe [not found] ` <1254585420.7539.2.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 17:35 ` Jens Axboe [not found] ` <20091003142840.GE31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 14:33 ` Mike Galbraith 2009-10-03 14:51 ` Mike Galbraith [not found] ` <20091003135623.GD12925-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-03 14:02 ` Mike Galbraith [not found] ` <20091003124049.GB12925-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-03 13:21 ` Jens Axboe 2009-10-03 13:57 ` Mike Galbraith 2009-10-03 13:57 ` Mike Galbraith [not found] ` <1254549378.8299.21.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 6:31 ` tweaking IO latency [was Re: IO scheduler based IO controller V10] Mike Galbraith 2009-10-03 7:24 ` IO scheduler based IO controller V10 Jens Axboe 2009-10-03 11:29 ` Vivek Goyal [not found] ` <1254548931.8299.18.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-03 5:56 ` Mike Galbraith 2009-10-03 7:20 ` Ingo Molnar 2009-10-03 7:20 ` Ingo Molnar 2009-10-03 7:20 ` Ingo Molnar [not found] ` <20091003072021.GB21407-X9Un+BFzKDI@public.gmane.org> 2009-10-03 7:25 ` Jens Axboe 2009-10-03 7:25 ` Jens Axboe 2009-10-03 7:25 ` Jens Axboe 2009-10-03 8:53 ` Mike Galbraith [not found] ` <20091003072540.GW31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-03 8:53 ` Mike Galbraith 2009-10-03 9:01 ` Corrado Zoccolo 2009-10-03 9:01 ` Corrado Zoccolo [not found] ` <20091002181903.GN31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 18:57 ` Mike Galbraith 2009-10-03 5:48 ` Mike Galbraith [not found] ` <1254507215.8667.7.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 18:19 ` Jens Axboe [not found] ` <20091002172554.GJ31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 17:28 ` Ingo Molnar [not found] ` <20091002172046.GA2376-X9Un+BFzKDI@public.gmane.org> 2009-10-02 17:25 ` Jens Axboe [not found] ` <20091002171129.GG31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 17:20 ` Ingo Molnar [not found] ` <alpine.LFD.2.01.0910020811490.6996-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org> 2009-10-02 16:01 ` jim owens 2009-10-02 17:11 ` Jens Axboe 2009-10-02 16:33 ` Ray Lee 2009-10-02 17:13 ` Jens Axboe 2009-10-02 17:13 ` Jens Axboe [not found] ` <2c0942db0910020933l6d312c6ahae0e00619f598b39-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-10-02 17:13 ` Jens Axboe [not found] ` <20091002145610.GD31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 15:14 ` Linus Torvalds 2009-10-02 16:33 ` Ray Lee [not found] ` <alpine.LFD.2.01.0910020715160.6996-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org> 2009-10-02 14:45 ` Mike Galbraith 2009-10-02 14:56 ` Jens Axboe 2009-10-02 16:22 ` Ingo Molnar 2009-10-02 16:22 ` Ingo Molnar 2009-10-02 16:22 ` Ingo Molnar [not found] ` <20091002092409.GA19529-X9Un+BFzKDI@public.gmane.org> 2009-10-02 9:28 ` Jens Axboe 2009-10-02 9:36 ` Mike Galbraith 2009-10-02 9:36 ` Mike Galbraith 2009-10-02 16:37 ` Ingo Molnar 2009-10-02 16:37 ` Ingo Molnar [not found] ` <1254476214.11022.8.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 16:37 ` Ingo Molnar [not found] ` <20091001185816.GU14918-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 6:23 ` Mike Galbraith 2009-10-02 18:08 ` Jens Axboe 2009-10-02 18:08 ` Jens Axboe 2009-10-02 18:29 ` Mike Galbraith 2009-10-02 18:36 ` Jens Axboe [not found] ` <1254508197.8667.22.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 18:36 ` Jens Axboe [not found] ` <20091002180857.GM31616-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2009-10-02 18:29 ` Mike Galbraith [not found] ` <1254341139.7695.36.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-30 20:24 ` Vivek Goyal 2009-09-27 17:00 ` Corrado Zoccolo 2009-09-28 14:56 ` Vivek Goyal 2009-09-28 14:56 ` Vivek Goyal [not found] ` <20090928145655.GB8192-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-28 15:35 ` Corrado Zoccolo 2009-09-28 15:35 ` Corrado Zoccolo 2009-09-28 17:14 ` Vivek Goyal 2009-09-28 17:14 ` Vivek Goyal 2009-09-29 7:10 ` Corrado Zoccolo [not found] ` <20090928171420.GA3643-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-29 7:10 ` Corrado Zoccolo 2009-09-28 17:51 ` Mike Galbraith 2009-09-28 18:18 ` Vivek Goyal 2009-09-28 18:18 ` Vivek Goyal 2009-09-28 18:53 ` Mike Galbraith 2009-09-29 7:14 ` Corrado Zoccolo [not found] ` <1254164034.9820.81.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-29 7:14 ` Corrado Zoccolo [not found] ` <20090928181846.GC3643-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-28 18:53 ` Mike Galbraith 2009-09-29 5:55 ` Mike Galbraith [not found] ` <1254160274.9820.25.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-09-28 18:18 ` Vivek Goyal 2009-09-29 5:55 ` Mike Galbraith [not found] ` <4e5e476b0909280835w3410d58aod93a29d1dcda8909-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-09-28 17:14 ` Vivek Goyal 2009-09-28 17:51 ` Mike Galbraith [not found] ` <4e5e476b0909271000u69d79346s27cccad219e49902-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-09-28 14:56 ` Vivek Goyal [not found] ` <20090925202636.GC15007-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-26 14:51 ` Mike Galbraith 2009-09-27 17:00 ` Corrado Zoccolo 2009-09-29 0:37 ` Nauman Rafique 2009-09-29 0:37 ` Nauman Rafique 2009-09-29 3:22 ` Vivek Goyal 2009-09-29 3:22 ` Vivek Goyal [not found] ` <20090929032255.GA10664-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-29 9:56 ` Ryo Tsuruta 2009-09-29 9:56 ` Ryo Tsuruta 2009-09-29 10:49 ` Takuya Yoshikawa 2009-09-29 14:10 ` Vivek Goyal 2009-09-29 14:10 ` Vivek Goyal 2009-09-29 19:53 ` Nauman Rafique [not found] ` <20090929141049.GA12141-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-29 19:53 ` Nauman Rafique 2009-09-30 8:43 ` Ryo Tsuruta 2009-09-30 8:43 ` Ryo Tsuruta 2009-09-30 11:05 ` Vivek Goyal 2009-09-30 11:05 ` Vivek Goyal 2009-10-01 6:41 ` Ryo Tsuruta 2009-10-01 6:41 ` Ryo Tsuruta [not found] ` <20091001.154125.104044685.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-10-01 13:31 ` Vivek Goyal 2009-10-01 13:31 ` Vivek Goyal 2009-10-01 13:31 ` Vivek Goyal 2009-10-02 2:57 ` Vivek Goyal 2009-10-02 2:57 ` Vivek Goyal 2009-10-02 20:27 ` Munehiro Ikeda 2009-10-02 20:27 ` Munehiro Ikeda [not found] ` <4AC6623F.70600-MDRzhb/z0dd8UrSeD/g0lQ@public.gmane.org> 2009-10-05 10:38 ` Ryo Tsuruta 2009-10-05 10:38 ` Ryo Tsuruta 2009-10-05 10:38 ` Ryo Tsuruta [not found] ` <20091005.193808.104033719.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-10-05 12:31 ` Vivek Goyal 2009-10-05 12:31 ` Vivek Goyal 2009-10-05 12:31 ` Vivek Goyal 2009-10-05 14:55 ` Ryo Tsuruta 2009-10-05 14:55 ` Ryo Tsuruta 2009-10-05 17:10 ` Vivek Goyal 2009-10-05 17:10 ` Vivek Goyal 2009-10-05 18:11 ` Nauman Rafique 2009-10-05 18:11 ` Nauman Rafique [not found] ` <e98e18940910051111r110dc776l5105bf931761b842-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-10-06 7:17 ` Ryo Tsuruta 2009-10-06 7:17 ` Ryo Tsuruta 2009-10-06 7:17 ` Ryo Tsuruta 2009-10-06 11:22 ` Vivek Goyal 2009-10-06 11:22 ` Vivek Goyal 2009-10-07 14:38 ` Ryo Tsuruta 2009-10-07 14:38 ` Ryo Tsuruta 2009-10-07 15:09 ` Vivek Goyal 2009-10-07 15:09 ` Vivek Goyal 2009-10-08 2:18 ` Ryo Tsuruta 2009-10-08 2:18 ` Ryo Tsuruta [not found] ` <20091007150929.GB3674-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-08 2:18 ` Ryo Tsuruta 2009-10-07 16:41 ` Rik van Riel 2009-10-07 16:41 ` Rik van Riel 2009-10-07 20:23 ` Andy [not found] ` <4ACCC4B7.4050805-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-08 10:22 ` Ryo Tsuruta 2009-10-08 10:22 ` Ryo Tsuruta 2009-10-08 10:22 ` Ryo Tsuruta [not found] ` <20091007.233805.183040347.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-10-07 15:09 ` Vivek Goyal 2009-10-07 16:41 ` Rik van Riel [not found] ` <20091006112201.GA27866-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-07 14:38 ` Ryo Tsuruta [not found] ` <20091006.161744.189719641.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-10-06 11:22 ` Vivek Goyal [not found] ` <20091005171023.GG22143-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-05 18:11 ` Nauman Rafique [not found] ` <20091005.235535.193690928.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-10-05 17:10 ` Vivek Goyal [not found] ` <20091005123148.GB22143-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-05 14:55 ` Ryo Tsuruta [not found] ` <20091002025731.GA2738-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-02 20:27 ` Munehiro Ikeda [not found] ` <20091001133109.GA4058-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-02 2:57 ` Vivek Goyal [not found] ` <20090930110500.GA26631-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-01 6:41 ` Ryo Tsuruta [not found] ` <20090930.174319.183036386.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-30 11:05 ` Vivek Goyal [not found] ` <20090929.185653.183056711.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-29 10:49 ` Takuya Yoshikawa 2009-09-29 14:10 ` Vivek Goyal 2009-09-30 3:11 ` Vivek Goyal 2009-09-30 3:11 ` Vivek Goyal 2009-09-30 3:11 ` Vivek Goyal [not found] ` <e98e18940909281737q142c788dpd20b8bdc05dd0eff-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-09-29 3:22 ` Vivek Goyal -- strict thread matches above, loose matches on Subject: below -- 2009-10-02 10:55 Corrado Zoccolo 2009-10-02 10:55 Corrado Zoccolo 2009-10-02 11:04 ` Jens Axboe [not found] ` <200910021255.27689.czoccolo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2009-10-02 11:04 ` Jens Axboe 2009-10-02 12:49 ` Vivek Goyal 2009-10-02 12:49 ` Vivek Goyal 2009-10-02 12:49 ` Vivek Goyal [not found] ` <20091002124921.GA4494-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-02 15:27 ` Corrado Zoccolo 2009-10-02 15:27 ` Corrado Zoccolo 2009-10-02 15:31 ` Vivek Goyal 2009-10-02 15:31 ` Vivek Goyal [not found] ` <4e5e476b0910020827s23e827b1n847c64e355999d4a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-10-02 15:31 ` Vivek Goyal 2009-10-02 15:32 ` Mike Galbraith 2009-10-02 15:32 ` Mike Galbraith 2009-10-02 15:32 ` Mike Galbraith 2009-10-02 15:40 ` Vivek Goyal 2009-10-02 15:40 ` Vivek Goyal [not found] ` <20091002154020.GC4494-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-02 16:03 ` Mike Galbraith 2009-10-02 16:50 ` Valdis.Kletnieks-PjAqaU27lzQ 2009-10-02 16:03 ` Mike Galbraith 2009-10-02 16:50 ` Valdis.Kletnieks 2009-10-02 16:50 ` Valdis.Kletnieks [not found] ` <12774.1254502217-+bZmOdGhbsPr6rcHtW+onFJE71vCis6O@public.gmane.org> 2009-10-02 19:58 ` Vivek Goyal 2009-10-02 19:58 ` Vivek Goyal 2009-10-02 19:58 ` Vivek Goyal 2009-10-02 22:14 ` Corrado Zoccolo 2009-10-02 22:14 ` Corrado Zoccolo [not found] ` <4e5e476b0910021514i1b461229t667bed94fd67f140-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-10-02 22:27 ` Vivek Goyal 2009-10-02 22:27 ` Vivek Goyal 2009-10-02 22:27 ` Vivek Goyal 2009-10-03 12:43 ` Corrado Zoccolo [not found] ` <20091002222756.GG4494-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-03 12:43 ` Corrado Zoccolo [not found] ` <20091002195815.GE4494-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-10-02 22:14 ` Corrado Zoccolo [not found] ` <1254497520.10392.11.camel-YqMYhexLQo1vAv1Ojkdn7Q@public.gmane.org> 2009-10-02 15:40 ` Vivek Goyal 2009-09-24 19:25 Vivek Goyal
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