From: Vivek Goyal <vgoyal@redhat.com> To: Jerome Marchand <jmarchan@redhat.com> Cc: linux-kernel@vger.kernel.org, jens.axboe@oracle.com, 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, s-uchida@ap.jp.nec.com, taka@valinux.co.jp, guijianfeng@cn.fujitsu.com, 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, torvalds@linux-foundation.org, mingo@elte.hu, riel@redhat.com Subject: Re: [RFC] IO scheduler based IO controller V9 Date: Thu, 10 Sep 2009 16:56:57 -0400 [thread overview] Message-ID: <20090910205657.GD3617@redhat.com> (raw) In-Reply-To: <20090910205227.GB3617@redhat.com> On Thu, Sep 10, 2009 at 04:52:27PM -0400, Vivek Goyal wrote: > On Thu, Sep 10, 2009 at 05:18:25PM +0200, Jerome Marchand wrote: > > Vivek Goyal wrote: > > > Hi All, > > > > > > Here is the V9 of the IO controller patches generated on top of 2.6.31-rc7. > > > > Hi Vivek, > > > > I've run some postgresql benchmarks for io-controller. Tests have been > > made with 2.6.31-rc6 kernel, without io-controller patches (when > > relevant) and with io-controller v8 and v9 patches. > > I set up two instances of the TPC-H database, each running in their > > own io-cgroup. I ran two clients to these databases and tested on each > > that simple request: > > $ select count(*) from LINEITEM; > > where LINEITEM is the biggest table of TPC-H (6001215 entries, > > 720MB). That request generates a steady stream of IOs. > > > > Time is measure by psql (\timing switched on). Each test is run twice > > or more if there is any significant difference between the first two > > runs. Before each run, the cache is flush: > > $ echo 3 > /proc/sys/vm/drop_caches > > > > > > Results with 2 groups of same io policy (BE) and same io weight (1000): > > > > w/o io-scheduler io-scheduler v8 io-scheduler v9 > > first second first second first second > > DB DB DB DB DB DB > > > > CFQ 48.4s 48.4s 48.2s 48.2s 48.1s 48.5s > > Noop 138.0s 138.0s 48.3s 48.4s 48.5s 48.8s > > AS 46.3s 47.0s 48.5s 48.7s 48.3s 48.5s > > Deadl. 137.1s 137.1s 48.2s 48.3s 48.3s 48.5s > > > > As you can see, there is no significant difference for CFQ > > scheduler. > > Thanks Jerome. > > > There is big improvement for noop and deadline schedulers > > (why is that happening?). > > I think because now related IO is in a single queue and it gets to run > for 100ms or so (like CFQ). So previously, IO from both the instances > will go into a single queue which should lead to more seeks as requests > from two groups will kind of get interleaved. > > With io controller, both groups have separate queues so requests from > both the data based instances will not get interleaved (This almost > becomes like CFQ where ther are separate queues for each io context > and for sequential reader, one io context gets to run nicely for certain > ms based on its priority). > > > The performance with anticipatory scheduler > > is a bit lower (~4%). > > Hi Jerome, Can you also run the AS test with io controller patches and both the database in root group (basically don't put them in to separate group). I suspect that this regression might come from that fact that we now have to switch between queues and in AS we wait for request to finish from previous queue before next queue is scheduled in and probably that is slowing down things a bit.., just a wild guess.. Thanks Vivek > > I will run some tests with AS and see if I can reproduce this lower > performance and attribute it to a particular piece of code. > > > > > Results with 2 groups of same io policy (BE), different io weights and > > CFQ scheduler: > > io-scheduler v8 io-scheduler v9 > > weights = 1000, 500 35.6s 46.7s 35.6s 46.7s > > weigths = 1000, 250 29.2s 45.8s 29.2s 45.6s > > > > The result in term of fairness is close to what we can expect from the > > ideal theoric case: with io weights of 1000 and 500 (1000 and 250), > > the first request get 2/3 (4/5) of io time as long as it runs and thus > > finish in about 3/4 (5/8) of total time. > > > > Jerome, after 36.6 seconds, disk will be fully given to second group. > Hence these times might not reflect the accurate measure of who got how > much of disk time. > > Can you just capture the output of "io.disk_time" file in both the cgroups > at the time of completion of task in higher weight group. Alternatively, > you can just run this a script in a loop which prints the output of > "cat io.disk_time | grep major:minor" every 2 seconds. That way we can > see how disk times are being distributed between groups. > > > > > Results with 2 groups of different io policies, same io weight and > > CFQ scheduler: > > io-scheduler v8 io-scheduler v9 > > policy = RT, BE 22.5s 45.3s 22.4s 45.0s > > policy = BE, IDLE 22.6s 44.8s 22.4s 45.0s > > > > Here again, the result in term of fairness is very close from what we > > expect. > > Same as above in this case too. > > These seem to be good test for fairness measurement in case of streaming > readers. I think one more interesting test case will be do how are the > random read latencies in case of multiple streaming readers present. > > So if we can launch 4-5 dd processes in one group and then issue some > random small queueries on postgresql in second group, I am keen to see > how quickly the query can be completed with and without io controller. > Would be interesting to see at results for all 4 io schedulers. > > Thanks > Vivek
WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com> To: Jerome Marchand <jmarchan@redhat.com> Cc: dhaval@linux.vnet.ibm.com, peterz@infradead.org, dm-devel@redhat.com, dpshah@google.com, jens.axboe@oracle.com, agk@redhat.com, balbir@linux.vnet.ibm.com, paolo.valente@unimore.it, guijianfeng@cn.fujitsu.com, fernando@oss.ntt.co.jp, mikew@google.com, jmoyer@redhat.com, nauman@google.com, mingo@elte.hu, m-ikeda@ds.jp.nec.com, riel@redhat.com, lizf@cn.fujitsu.com, fchecconi@gmail.com, s-uchida@ap.jp.nec.com, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, righi.andrea@gmail.com, torvalds@linux-foundation.org Subject: Re: [RFC] IO scheduler based IO controller V9 Date: Thu, 10 Sep 2009 16:56:57 -0400 [thread overview] Message-ID: <20090910205657.GD3617@redhat.com> (raw) In-Reply-To: <20090910205227.GB3617@redhat.com> On Thu, Sep 10, 2009 at 04:52:27PM -0400, Vivek Goyal wrote: > On Thu, Sep 10, 2009 at 05:18:25PM +0200, Jerome Marchand wrote: > > Vivek Goyal wrote: > > > Hi All, > > > > > > Here is the V9 of the IO controller patches generated on top of 2.6.31-rc7. > > > > Hi Vivek, > > > > I've run some postgresql benchmarks for io-controller. Tests have been > > made with 2.6.31-rc6 kernel, without io-controller patches (when > > relevant) and with io-controller v8 and v9 patches. > > I set up two instances of the TPC-H database, each running in their > > own io-cgroup. I ran two clients to these databases and tested on each > > that simple request: > > $ select count(*) from LINEITEM; > > where LINEITEM is the biggest table of TPC-H (6001215 entries, > > 720MB). That request generates a steady stream of IOs. > > > > Time is measure by psql (\timing switched on). Each test is run twice > > or more if there is any significant difference between the first two > > runs. Before each run, the cache is flush: > > $ echo 3 > /proc/sys/vm/drop_caches > > > > > > Results with 2 groups of same io policy (BE) and same io weight (1000): > > > > w/o io-scheduler io-scheduler v8 io-scheduler v9 > > first second first second first second > > DB DB DB DB DB DB > > > > CFQ 48.4s 48.4s 48.2s 48.2s 48.1s 48.5s > > Noop 138.0s 138.0s 48.3s 48.4s 48.5s 48.8s > > AS 46.3s 47.0s 48.5s 48.7s 48.3s 48.5s > > Deadl. 137.1s 137.1s 48.2s 48.3s 48.3s 48.5s > > > > As you can see, there is no significant difference for CFQ > > scheduler. > > Thanks Jerome. > > > There is big improvement for noop and deadline schedulers > > (why is that happening?). > > I think because now related IO is in a single queue and it gets to run > for 100ms or so (like CFQ). So previously, IO from both the instances > will go into a single queue which should lead to more seeks as requests > from two groups will kind of get interleaved. > > With io controller, both groups have separate queues so requests from > both the data based instances will not get interleaved (This almost > becomes like CFQ where ther are separate queues for each io context > and for sequential reader, one io context gets to run nicely for certain > ms based on its priority). > > > The performance with anticipatory scheduler > > is a bit lower (~4%). > > Hi Jerome, Can you also run the AS test with io controller patches and both the database in root group (basically don't put them in to separate group). I suspect that this regression might come from that fact that we now have to switch between queues and in AS we wait for request to finish from previous queue before next queue is scheduled in and probably that is slowing down things a bit.., just a wild guess.. Thanks Vivek > > I will run some tests with AS and see if I can reproduce this lower > performance and attribute it to a particular piece of code. > > > > > Results with 2 groups of same io policy (BE), different io weights and > > CFQ scheduler: > > io-scheduler v8 io-scheduler v9 > > weights = 1000, 500 35.6s 46.7s 35.6s 46.7s > > weigths = 1000, 250 29.2s 45.8s 29.2s 45.6s > > > > The result in term of fairness is close to what we can expect from the > > ideal theoric case: with io weights of 1000 and 500 (1000 and 250), > > the first request get 2/3 (4/5) of io time as long as it runs and thus > > finish in about 3/4 (5/8) of total time. > > > > Jerome, after 36.6 seconds, disk will be fully given to second group. > Hence these times might not reflect the accurate measure of who got how > much of disk time. > > Can you just capture the output of "io.disk_time" file in both the cgroups > at the time of completion of task in higher weight group. Alternatively, > you can just run this a script in a loop which prints the output of > "cat io.disk_time | grep major:minor" every 2 seconds. That way we can > see how disk times are being distributed between groups. > > > > > Results with 2 groups of different io policies, same io weight and > > CFQ scheduler: > > io-scheduler v8 io-scheduler v9 > > policy = RT, BE 22.5s 45.3s 22.4s 45.0s > > policy = BE, IDLE 22.6s 44.8s 22.4s 45.0s > > > > Here again, the result in term of fairness is very close from what we > > expect. > > Same as above in this case too. > > These seem to be good test for fairness measurement in case of streaming > readers. I think one more interesting test case will be do how are the > random read latencies in case of multiple streaming readers present. > > So if we can launch 4-5 dd processes in one group and then issue some > random small queueries on postgresql in second group, I am keen to see > how quickly the query can be completed with and without io controller. > Would be interesting to see at results for all 4 io schedulers. > > Thanks > Vivek
next prev parent reply other threads:[~2009-09-10 20:58 UTC|newest] Thread overview: 322+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-08-28 21:30 [RFC] IO scheduler based IO controller V9 Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-28 21:30 ` [PATCH 01/23] io-controller: Documentation Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-28 21:30 ` [PATCH 02/23] io-controller: Core of the elevator fair queuing Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-28 22:26 ` Rik van Riel 2009-08-28 22:26 ` Rik van Riel [not found] ` <1251495072-7780-3-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-28 22:26 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 03/23] io-controller: Common flat fair queuing code in elevaotor layer Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-29 1:29 ` Rik van Riel 2009-08-29 1:29 ` Rik van Riel [not found] ` <1251495072-7780-4-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 1:29 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 04/23] io-controller: Modify cfq to make use of flat elevator fair queuing Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-29 1:44 ` Rik van Riel 2009-08-29 1:44 ` Rik van Riel [not found] ` <1251495072-7780-5-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 1:44 ` Rik van Riel [not found] ` <1251495072-7780-1-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-28 21:30 ` [PATCH 01/23] io-controller: Documentation Vivek Goyal 2009-08-28 21:30 ` [PATCH 02/23] io-controller: Core of the elevator fair queuing Vivek Goyal 2009-08-28 21:30 ` [PATCH 03/23] io-controller: Common flat fair queuing code in elevaotor layer Vivek Goyal 2009-08-28 21:30 ` [PATCH 04/23] io-controller: Modify cfq to make use of flat elevator fair queuing Vivek Goyal 2009-08-28 21:30 ` [PATCH 05/23] io-controller: Core scheduler changes to support hierarhical scheduling Vivek Goyal 2009-08-28 21:30 ` [PATCH 06/23] io-controller: cgroup related changes for hierarchical group support Vivek Goyal 2009-08-28 21:30 ` [PATCH 07/23] io-controller: Common hierarchical fair queuing code in elevaotor layer Vivek Goyal 2009-08-28 21:30 ` [PATCH 08/23] io-controller: cfq changes to use " Vivek Goyal 2009-08-28 21:30 ` [PATCH 09/23] io-controller: Export disk time used and nr sectors dipatched through cgroups Vivek Goyal 2009-08-28 21:30 ` [PATCH 10/23] io-controller: Debug hierarchical IO scheduling Vivek Goyal 2009-08-28 21:31 ` [PATCH 11/23] io-controller: Introduce group idling Vivek Goyal 2009-08-28 21:31 ` [PATCH 12/23] io-controller: Wait for requests to complete from last queue before new queue is scheduled Vivek Goyal 2009-08-28 21:31 ` [PATCH 13/23] io-controller: Separate out queue and data Vivek Goyal 2009-08-28 21:31 ` [PATCH 14/23] io-conroller: Prepare elevator layer for single queue schedulers Vivek Goyal 2009-08-28 21:31 ` [PATCH 15/23] io-controller: noop changes for hierarchical fair queuing Vivek Goyal 2009-08-28 21:31 ` [PATCH 16/23] io-controller: deadline " Vivek Goyal 2009-08-28 21:31 ` [PATCH 17/23] io-controller: anticipatory " Vivek Goyal 2009-08-28 21:31 ` [PATCH 18/23] io-controller: blkio_cgroup patches from Ryo to track async bios Vivek Goyal 2009-08-28 21:31 ` [PATCH 19/23] io-controller: map async requests to appropriate cgroup Vivek Goyal 2009-08-28 21:31 ` [PATCH 20/23] io-controller: Per cgroup request descriptor support Vivek Goyal 2009-08-28 21:31 ` [PATCH 21/23] io-controller: Per io group bdi congestion interface Vivek Goyal 2009-08-28 21:31 ` [PATCH 22/23] io-controller: Support per cgroup per device weights and io class Vivek Goyal 2009-08-28 21:31 ` [PATCH 23/23] io-controller: debug elevator fair queuing support Vivek Goyal 2009-08-31 1:09 ` [RFC] IO scheduler based IO controller V9 Gui Jianfeng 2009-09-02 0:58 ` Gui Jianfeng 2009-09-07 7:40 ` Gui Jianfeng 2009-09-08 22:28 ` Vivek Goyal 2009-09-08 22:28 ` [PATCH 24/23] io-controller: Don't leave a queue active when a disk is idle Vivek Goyal 2009-09-08 22:28 ` [PATCH 25/23] io-controller: fix queue vs group fairness Vivek Goyal 2009-09-08 22:28 ` [PATCH 26/23] io-controller: fix writer preemption with in a group Vivek Goyal 2009-09-10 15:18 ` [RFC] IO scheduler based IO controller V9 Jerome Marchand 2009-08-28 21:30 ` [PATCH 05/23] io-controller: Core scheduler changes to support hierarhical scheduling Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-29 3:31 ` Rik van Riel 2009-08-29 3:31 ` Rik van Riel [not found] ` <1251495072-7780-6-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 3:31 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 06/23] io-controller: cgroup related changes for hierarchical group support Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal [not found] ` <1251495072-7780-7-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 3:37 ` Rik van Riel 2009-08-29 3:37 ` Rik van Riel 2009-08-29 3:37 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 07/23] io-controller: Common hierarchical fair queuing code in elevaotor layer Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-29 23:04 ` Rik van Riel 2009-08-29 23:04 ` Rik van Riel 2009-09-03 3:08 ` Munehiro Ikeda 2009-09-03 3:08 ` Munehiro Ikeda [not found] ` <4A9F3319.8040509-MDRzhb/z0dd8UrSeD/g0lQ@public.gmane.org> 2009-09-10 20:11 ` Vivek Goyal 2009-09-10 20:11 ` Vivek Goyal 2009-09-10 20:11 ` Vivek Goyal [not found] ` <1251495072-7780-8-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 23:04 ` Rik van Riel 2009-09-03 3:08 ` Munehiro Ikeda 2009-08-28 21:30 ` [PATCH 08/23] io-controller: cfq changes to use " Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal 2009-08-29 23:11 ` Rik van Riel 2009-08-29 23:11 ` Rik van Riel [not found] ` <1251495072-7780-9-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 23:11 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 09/23] io-controller: Export disk time used and nr sectors dipatched through cgroups Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal [not found] ` <1251495072-7780-10-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-29 23:12 ` Rik van Riel 2009-08-29 23:12 ` Rik van Riel 2009-08-29 23:12 ` Rik van Riel 2009-08-28 21:30 ` [PATCH 10/23] io-controller: Debug hierarchical IO scheduling Vivek Goyal 2009-08-28 21:30 ` Vivek Goyal [not found] ` <1251495072-7780-11-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-30 0:10 ` Rik van Riel 2009-08-30 0:10 ` Rik van Riel 2009-08-30 0:10 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 11/23] io-controller: Introduce group idling Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-30 0:38 ` Rik van Riel 2009-08-30 0:38 ` Rik van Riel [not found] ` <1251495072-7780-12-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-30 0:38 ` Rik van Riel 2009-09-18 3:56 ` [PATCH] io-controller: Fix another bug that causing system hanging Gui Jianfeng 2009-09-18 3:56 ` Gui Jianfeng 2009-09-18 3:56 ` Gui Jianfeng 2009-09-18 14:47 ` Vivek Goyal 2009-09-18 14:47 ` Vivek Goyal [not found] ` <4AB30508.6010206-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-18 14:47 ` Vivek Goyal 2009-08-28 21:31 ` [PATCH 12/23] io-controller: Wait for requests to complete from last queue before new queue is scheduled Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal [not found] ` <1251495072-7780-13-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-30 0:40 ` Rik van Riel 2009-08-30 0:40 ` Rik van Riel 2009-08-30 0:40 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 13/23] io-controller: Separate out queue and data Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 15:27 ` Rik van Riel 2009-08-31 15:27 ` Rik van Riel [not found] ` <1251495072-7780-14-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 15:27 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 14/23] io-conroller: Prepare elevator layer for single queue schedulers Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 2:49 ` Rik van Riel 2009-08-31 2:49 ` Rik van Riel [not found] ` <1251495072-7780-15-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 2:49 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 15/23] io-controller: noop changes for hierarchical fair queuing Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 2:52 ` Rik van Riel 2009-08-31 2:52 ` Rik van Riel 2009-09-10 17:32 ` Vivek Goyal 2009-09-10 17:32 ` Vivek Goyal [not found] ` <4A9B3B0B.9090009-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-10 17:32 ` Vivek Goyal [not found] ` <1251495072-7780-16-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 2:52 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 16/23] io-controller: deadline " Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 3:13 ` Rik van Riel 2009-08-31 3:13 ` Rik van Riel 2009-08-31 13:46 ` Vivek Goyal 2009-08-31 13:46 ` Vivek Goyal [not found] ` <4A9B3FD3.6000407-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 13:46 ` Vivek Goyal [not found] ` <1251495072-7780-17-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 3:13 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 17/23] io-controller: anticipatory " Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal [not found] ` <1251495072-7780-18-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 17:21 ` Rik van Riel 2009-08-31 17:21 ` Rik van Riel 2009-08-31 17:21 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 18/23] io-controller: blkio_cgroup patches from Ryo to track async bios Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal [not found] ` <1251495072-7780-19-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 17:34 ` Rik van Riel 2009-08-31 17:34 ` Rik van Riel 2009-08-31 17:34 ` Rik van Riel 2009-08-31 18:56 ` Vivek Goyal 2009-08-31 18:56 ` Vivek Goyal 2009-08-31 23:51 ` Nauman Rafique 2009-08-31 23:51 ` Nauman Rafique 2009-09-01 7:00 ` Ryo Tsuruta 2009-09-01 7:00 ` Ryo Tsuruta [not found] ` <20090901.160004.226800357.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-01 14:11 ` Vivek Goyal 2009-09-01 14:11 ` Vivek Goyal 2009-09-01 14:11 ` Vivek Goyal 2009-09-01 14:53 ` Rik van Riel 2009-09-01 14:53 ` Rik van Riel 2009-09-01 18:02 ` Nauman Rafique 2009-09-01 18:02 ` Nauman Rafique [not found] ` <20090901141142.GA13709-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-01 14:53 ` Rik van Riel 2009-09-01 18:02 ` Nauman Rafique 2009-09-02 0:59 ` KAMEZAWA Hiroyuki 2009-09-02 9:52 ` Ryo Tsuruta 2009-09-02 0:59 ` KAMEZAWA Hiroyuki 2009-09-02 0:59 ` KAMEZAWA Hiroyuki 2009-09-02 3:12 ` Balbir Singh 2009-09-02 3:12 ` Balbir Singh [not found] ` <20090902095912.cdf8a55e.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> 2009-09-02 3:12 ` Balbir Singh 2009-09-02 9:52 ` Ryo Tsuruta [not found] ` <20090902.185251.193693849.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-02 13:58 ` Vivek Goyal 2009-09-02 13:58 ` Vivek Goyal 2009-09-02 13:58 ` Vivek Goyal 2009-09-03 2:24 ` Ryo Tsuruta 2009-09-03 2:40 ` Vivek Goyal 2009-09-03 2:40 ` Vivek Goyal [not found] ` <20090903024014.GA8644-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-03 3:41 ` Ryo Tsuruta 2009-09-03 3:41 ` Ryo Tsuruta 2009-09-03 3:41 ` Ryo Tsuruta [not found] ` <20090903.112423.226782505.ryov-jCdQPDEk3idL9jVzuh4AOg@public.gmane.org> 2009-09-03 2:40 ` Vivek Goyal [not found] ` <20090902135821.GB5012-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-03 2:24 ` Ryo Tsuruta [not found] ` <e98e18940908311651s26de5b70ye6f4a82402956309-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-09-01 7:00 ` Ryo Tsuruta [not found] ` <20090831185640.GF3758-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 23:51 ` Nauman Rafique [not found] ` <4A9C09BE.4060404-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 18:56 ` Vivek Goyal 2009-08-28 21:31 ` [PATCH 19/23] io-controller: map async requests to appropriate cgroup Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal [not found] ` <1251495072-7780-20-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 17:39 ` Rik van Riel 2009-08-31 17:39 ` Rik van Riel 2009-08-31 17:39 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 20/23] io-controller: Per cgroup request descriptor support Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 17:54 ` Rik van Riel 2009-08-31 17:54 ` Rik van Riel 2009-09-14 18:33 ` Nauman Rafique 2009-09-14 18:33 ` Nauman Rafique [not found] ` <e98e18940909141133m5186b780r3215ce15141e4f87-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2009-09-16 18:47 ` Vivek Goyal 2009-09-16 18:47 ` Vivek Goyal 2009-09-16 18:47 ` Vivek Goyal [not found] ` <1251495072-7780-21-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 17:54 ` Rik van Riel 2009-09-14 18:33 ` Nauman Rafique 2009-08-28 21:31 ` [PATCH 21/23] io-controller: Per io group bdi congestion interface Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 19:49 ` Rik van Riel 2009-08-31 19:49 ` Rik van Riel [not found] ` <1251495072-7780-22-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 19:49 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 22/23] io-controller: Support per cgroup per device weights and io class Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal [not found] ` <1251495072-7780-23-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 20:56 ` Rik van Riel 2009-08-31 20:56 ` Rik van Riel 2009-08-31 20:56 ` Rik van Riel 2009-08-28 21:31 ` [PATCH 23/23] io-controller: debug elevator fair queuing support Vivek Goyal 2009-08-28 21:31 ` Vivek Goyal 2009-08-31 20:57 ` Rik van Riel 2009-08-31 20:57 ` Rik van Riel 2009-08-31 21:01 ` Vivek Goyal 2009-08-31 21:01 ` Vivek Goyal 2009-08-31 21:12 ` Rik van Riel 2009-08-31 21:12 ` Rik van Riel [not found] ` <20090831210154.GA8229-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 21:12 ` Rik van Riel [not found] ` <4A9C3951.8020302-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 21:01 ` Vivek Goyal [not found] ` <1251495072-7780-24-git-send-email-vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-08-31 20:57 ` Rik van Riel 2009-08-31 1:09 ` [RFC] IO scheduler based IO controller V9 Gui Jianfeng 2009-08-31 1:09 ` Gui Jianfeng 2009-09-02 0:58 ` Gui Jianfeng 2009-09-02 0:58 ` Gui Jianfeng 2009-09-02 13:45 ` Vivek Goyal 2009-09-02 13:45 ` Vivek Goyal [not found] ` <4A9DC33E.6000408-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-02 13:45 ` Vivek Goyal 2009-09-07 2:14 ` Gui Jianfeng 2009-09-07 2:14 ` Gui Jianfeng 2009-09-07 2:14 ` Gui Jianfeng [not found] ` <4AA46C6E.4010109-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-08 13:55 ` Vivek Goyal 2009-09-08 13:55 ` Vivek Goyal 2009-09-08 13:55 ` Vivek Goyal 2009-09-07 7:40 ` Gui Jianfeng 2009-09-07 7:40 ` Gui Jianfeng 2009-09-08 13:53 ` Vivek Goyal 2009-09-08 13:53 ` Vivek Goyal [not found] ` <4AA4B905.8010801-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-08 13:53 ` Vivek Goyal 2009-09-08 19:19 ` Vivek Goyal 2009-09-08 19:19 ` Vivek Goyal 2009-09-08 19:19 ` Vivek Goyal 2009-09-09 7:38 ` Gui Jianfeng 2009-09-09 7:38 ` Gui Jianfeng [not found] ` <4AA75B71.5060109-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-09 15:05 ` Vivek Goyal 2009-09-09 15:05 ` Vivek Goyal 2009-09-09 15:05 ` Vivek Goyal 2009-09-10 3:20 ` Gui Jianfeng [not found] ` <20090909150537.GD8256-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-10 3:20 ` Gui Jianfeng 2009-09-11 1:15 ` [PATCH] io-controller: Fix task hanging when there are more than one groups Gui Jianfeng 2009-09-11 1:15 ` Gui Jianfeng 2009-09-14 2:44 ` Vivek Goyal 2009-09-14 2:44 ` Vivek Goyal [not found] ` <4AA9A4BE.30005-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-14 2:44 ` Vivek Goyal 2009-09-15 3:37 ` Vivek Goyal 2009-09-15 3:37 ` Vivek Goyal 2009-09-15 3:37 ` Vivek Goyal 2009-09-16 0:05 ` Gui Jianfeng 2009-09-16 0:05 ` Gui Jianfeng [not found] ` <20090915033739.GA4054-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-16 0:05 ` Gui Jianfeng 2009-09-16 2:58 ` Gui Jianfeng 2009-09-24 1:10 ` Gui Jianfeng 2009-09-16 2:58 ` Gui Jianfeng 2009-09-16 18:09 ` Vivek Goyal 2009-09-16 18:09 ` Vivek Goyal 2009-09-17 6:08 ` Gui Jianfeng 2009-09-17 6:08 ` Gui Jianfeng [not found] ` <20090916180915.GE5221-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-17 6:08 ` Gui Jianfeng [not found] ` <4AB05442.6080004-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> 2009-09-16 18:09 ` Vivek Goyal 2009-09-24 1:10 ` Gui Jianfeng 2009-09-09 9:41 ` [RFC] IO scheduler based IO controller V9 Jens Axboe 2009-09-09 9:41 ` Jens Axboe [not found] ` <20090908191941.GF15974-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-09 7:38 ` Gui Jianfeng 2009-09-09 9:41 ` Jens Axboe 2009-09-08 22:28 ` Vivek Goyal 2009-09-08 22:28 ` Vivek Goyal 2009-09-08 22:28 ` [PATCH 24/23] io-controller: Don't leave a queue active when a disk is idle Vivek Goyal [not found] ` <20090908222821.GB3558-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-09 3:39 ` Rik van Riel 2009-09-09 3:39 ` Rik van Riel 2009-09-08 22:28 ` [PATCH 25/23] io-controller: fix queue vs group fairness Vivek Goyal 2009-09-08 22:28 ` Vivek Goyal [not found] ` <20090908222827.GC3558-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-08 22:37 ` Daniel Walker 2009-09-08 23:13 ` Fabio Checconi 2009-09-09 4:44 ` Rik van Riel 2009-09-08 22:37 ` Daniel Walker 2009-09-09 1:09 ` Vivek Goyal 2009-09-09 1:09 ` Vivek Goyal 2009-09-09 1:09 ` Vivek Goyal 2009-09-08 23:13 ` Fabio Checconi 2009-09-09 1:32 ` Vivek Goyal 2009-09-09 1:32 ` Vivek Goyal [not found] ` <20090909013205.GB3594-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-09 2:03 ` Fabio Checconi 2009-09-09 2:03 ` Fabio Checconi [not found] ` <20090908231334.GJ17468-f9ZlEuEWxVeACYmtYXMKmw@public.gmane.org> 2009-09-09 1:32 ` Vivek Goyal 2009-09-09 4:44 ` Rik van Riel 2009-09-09 4:44 ` Rik van Riel 2009-09-08 22:28 ` [PATCH 26/23] io-controller: fix writer preemption with in a group Vivek Goyal 2009-09-08 22:28 ` Vivek Goyal [not found] ` <20090908222835.GD3558-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-09 4:59 ` Rik van Riel 2009-09-09 4:59 ` Rik van Riel 2009-09-09 4:59 ` Rik van Riel 2009-09-10 15:18 ` [RFC] IO scheduler based IO controller V9 Jerome Marchand 2009-09-10 20:52 ` Vivek Goyal 2009-09-10 20:52 ` Vivek Goyal 2009-09-10 20:56 ` Vivek Goyal [this message] 2009-09-10 20:56 ` Vivek Goyal [not found] ` <20090910205657.GD3617-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-11 13:16 ` Jerome Marchand 2009-09-11 13:16 ` Jerome Marchand 2009-09-11 14:30 ` Vivek Goyal 2009-09-11 14:30 ` Vivek Goyal [not found] ` <20090911143040.GB6758-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-11 14:43 ` Vivek Goyal 2009-09-11 14:44 ` Jerome Marchand 2009-09-11 14:43 ` Vivek Goyal 2009-09-11 14:43 ` Vivek Goyal [not found] ` <20090911144341.GC6758-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-11 14:55 ` Jerome Marchand 2009-09-11 14:55 ` Jerome Marchand [not found] ` <4AAA64F6.2050800-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-11 15:01 ` Vivek Goyal 2009-09-11 15:01 ` Vivek Goyal 2009-09-11 15:01 ` Vivek Goyal 2009-09-11 14:44 ` Jerome Marchand [not found] ` <4AAA4DA7.8010909-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-11 14:30 ` Vivek Goyal [not found] ` <20090910205227.GB3617-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-10 20:56 ` Vivek Goyal 2009-09-14 14:26 ` Jerome Marchand 2009-09-14 14:26 ` Jerome Marchand 2009-09-13 18:54 ` Vivek Goyal 2009-09-13 18:54 ` Vivek Goyal [not found] ` <20090913185447.GA11003-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-14 14:31 ` Jerome Marchand 2009-09-14 14:31 ` Jerome Marchand [not found] ` <4AA918C1.6070907-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2009-09-10 20:52 ` Vivek Goyal 2009-09-13 18:54 ` Vivek Goyal -- strict thread matches above, loose matches on Subject: below -- 2009-08-28 21:30 Vivek Goyal
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