From: Gui Jianfeng <guijianfeng@cn.fujitsu.com> To: Vivek Goyal <vgoyal@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, 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, torvalds@linux-foundation.org, mingo@elte.hu, riel@redhat.com, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Subject: [PATCH] io-controller: Fix another bug that causing system hanging Date: Fri, 18 Sep 2009 11:56:56 +0800 [thread overview] Message-ID: <4AB30508.6010206@cn.fujitsu.com> (raw) In-Reply-To: <1251495072-7780-12-git-send-email-vgoyal@redhat.com> Vivek Goyal wrote: ... > * If io scheduler has functionality of keeping track of close cooperator, check > * with it if it has got a closely co-operating queue. > @@ -2057,6 +2171,7 @@ void *elv_select_ioq(struct request_queue *q, int force) > { > struct elv_fq_data *efqd = q->elevator->efqd; > struct io_queue *new_ioq = NULL, *ioq = elv_active_ioq(q->elevator); > + struct io_group *iog; > > if (!elv_nr_busy_ioq(q->elevator)) > return NULL; > @@ -2064,6 +2179,8 @@ void *elv_select_ioq(struct request_queue *q, int force) > if (ioq == NULL) > goto new_queue; > > + iog = ioq_to_io_group(ioq); > + > /* > * Force dispatch. Continue to dispatch from current queue as long > * as it has requests. > @@ -2075,11 +2192,47 @@ void *elv_select_ioq(struct request_queue *q, int force) > goto expire; > } > > + /* We are waiting for this group to become busy before it expires.*/ > + if (elv_iog_wait_busy(iog)) { > + ioq = NULL; > + goto keep_queue; > + } > + > /* > * The active queue has run out of time, expire it and select new. > */ > - if (elv_ioq_slice_used(ioq) && !elv_ioq_must_dispatch(ioq)) > - goto expire; > + if ((elv_ioq_slice_used(ioq) || elv_ioq_class_idle(ioq)) > + && !elv_ioq_must_dispatch(ioq)) { > + /* > + * Queue has used up its slice. Wait busy is not on otherwise > + * we wouldn't have been here. If this group will be deleted > + * after the queue expiry, then make sure we have onece > + * done wait busy on the group in an attempt to make it > + * backlogged. > + * > + * Following check helps in two conditions. > + * - If there are requests dispatched from the queue and > + * select_ioq() comes before a request completed from the > + * queue and got a chance to arm any of the idle timers. > + * > + * - If at request completion time slice had not expired and > + * we armed either a ioq timer or group timer but when > + * select_ioq() hits, slice has expired and it will expire > + * the queue without doing busy wait on group. > + * > + * In similar situations cfq lets delte the queue even if > + * idle timer is armed. That does not impact fairness in non > + * hierarhical setup due to weighted slice lengths. But in > + * hierarchical setup where group slice lengths are derived > + * from queue and is not proportional to group's weight, it > + * harms the fairness of the group. > + */ > + if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog)) { Hi Vivek, Here is another bug which will cause task hanging when accessing into a certain disk. For the moment, last ioq(corresponding CGroup has been removed) is optimized not to expire unitl another ioq get backlogged. Here just checking "iog_wait_busy_done" flag is not sufficient, because idle timer can be inactive at that moment. This will cause the ioq keeping service all the time and won't stop, causing the whole system hanging. This patch adds extra check for "iog_wait_busy" to make sure that the idle timer is pending, and this ioq will be expired after timer is up. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> --- block/elevator-fq.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/block/elevator-fq.c b/block/elevator-fq.c index 40d0eb5..c039ba2 100644 --- a/block/elevator-fq.c +++ b/block/elevator-fq.c @@ -3364,7 +3364,8 @@ void *elv_select_ioq(struct request_queue *q, int force) * harms the fairness of the group. */ slice_expired = 1; - if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog)) { + if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog) && + elv_iog_wait_busy(iog)) { ioq = NULL; goto keep_queue; } else -- 1.5.4.rc3
WARNING: multiple messages have this Message-ID (diff)
From: Gui Jianfeng <guijianfeng@cn.fujitsu.com> To: Vivek Goyal <vgoyal@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, jmarchan@redhat.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, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, righi.andrea@gmail.com, torvalds@linux-foundation.org Subject: [PATCH] io-controller: Fix another bug that causing system hanging Date: Fri, 18 Sep 2009 11:56:56 +0800 [thread overview] Message-ID: <4AB30508.6010206@cn.fujitsu.com> (raw) In-Reply-To: <1251495072-7780-12-git-send-email-vgoyal@redhat.com> Vivek Goyal wrote: ... > * If io scheduler has functionality of keeping track of close cooperator, check > * with it if it has got a closely co-operating queue. > @@ -2057,6 +2171,7 @@ void *elv_select_ioq(struct request_queue *q, int force) > { > struct elv_fq_data *efqd = q->elevator->efqd; > struct io_queue *new_ioq = NULL, *ioq = elv_active_ioq(q->elevator); > + struct io_group *iog; > > if (!elv_nr_busy_ioq(q->elevator)) > return NULL; > @@ -2064,6 +2179,8 @@ void *elv_select_ioq(struct request_queue *q, int force) > if (ioq == NULL) > goto new_queue; > > + iog = ioq_to_io_group(ioq); > + > /* > * Force dispatch. Continue to dispatch from current queue as long > * as it has requests. > @@ -2075,11 +2192,47 @@ void *elv_select_ioq(struct request_queue *q, int force) > goto expire; > } > > + /* We are waiting for this group to become busy before it expires.*/ > + if (elv_iog_wait_busy(iog)) { > + ioq = NULL; > + goto keep_queue; > + } > + > /* > * The active queue has run out of time, expire it and select new. > */ > - if (elv_ioq_slice_used(ioq) && !elv_ioq_must_dispatch(ioq)) > - goto expire; > + if ((elv_ioq_slice_used(ioq) || elv_ioq_class_idle(ioq)) > + && !elv_ioq_must_dispatch(ioq)) { > + /* > + * Queue has used up its slice. Wait busy is not on otherwise > + * we wouldn't have been here. If this group will be deleted > + * after the queue expiry, then make sure we have onece > + * done wait busy on the group in an attempt to make it > + * backlogged. > + * > + * Following check helps in two conditions. > + * - If there are requests dispatched from the queue and > + * select_ioq() comes before a request completed from the > + * queue and got a chance to arm any of the idle timers. > + * > + * - If at request completion time slice had not expired and > + * we armed either a ioq timer or group timer but when > + * select_ioq() hits, slice has expired and it will expire > + * the queue without doing busy wait on group. > + * > + * In similar situations cfq lets delte the queue even if > + * idle timer is armed. That does not impact fairness in non > + * hierarhical setup due to weighted slice lengths. But in > + * hierarchical setup where group slice lengths are derived > + * from queue and is not proportional to group's weight, it > + * harms the fairness of the group. > + */ > + if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog)) { Hi Vivek, Here is another bug which will cause task hanging when accessing into a certain disk. For the moment, last ioq(corresponding CGroup has been removed) is optimized not to expire unitl another ioq get backlogged. Here just checking "iog_wait_busy_done" flag is not sufficient, because idle timer can be inactive at that moment. This will cause the ioq keeping service all the time and won't stop, causing the whole system hanging. This patch adds extra check for "iog_wait_busy" to make sure that the idle timer is pending, and this ioq will be expired after timer is up. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> --- block/elevator-fq.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/block/elevator-fq.c b/block/elevator-fq.c index 40d0eb5..c039ba2 100644 --- a/block/elevator-fq.c +++ b/block/elevator-fq.c @@ -3364,7 +3364,8 @@ void *elv_select_ioq(struct request_queue *q, int force) * harms the fairness of the group. */ slice_expired = 1; - if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog)) { + if (elv_iog_should_idle(ioq) && !elv_iog_wait_busy_done(iog) && + elv_iog_wait_busy(iog)) { ioq = NULL; goto keep_queue; } else -- 1.5.4.rc3
next prev parent reply other threads:[~2009-09-18 3:58 UTC|newest] Thread overview: 321+ 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 [this message] 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 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=4AB30508.6010206@cn.fujitsu.com \ --to=guijianfeng@cn.fujitsu.com \ --cc=agk@redhat.com \ --cc=akpm@linux-foundation.org \ --cc=balbir@linux.vnet.ibm.com \ --cc=containers@lists.linux-foundation.org \ --cc=dhaval@linux.vnet.ibm.com \ --cc=dm-devel@redhat.com \ --cc=dpshah@google.com \ --cc=fchecconi@gmail.com \ --cc=fernando@oss.ntt.co.jp \ --cc=jens.axboe@oracle.com \ --cc=jmarchan@redhat.com \ --cc=jmoyer@redhat.com \ --cc=kamezawa.hiroyu@jp.fujitsu.com \ --cc=linux-kernel@vger.kernel.org \ --cc=lizf@cn.fujitsu.com \ --cc=m-ikeda@ds.jp.nec.com \ --cc=mikew@google.com \ --cc=mingo@elte.hu \ --cc=nauman@google.com \ --cc=paolo.valente@unimore.it \ --cc=peterz@infradead.org \ --cc=riel@redhat.com \ --cc=righi.andrea@gmail.com \ --cc=ryov@valinux.co.jp \ --cc=s-uchida@ap.jp.nec.com \ --cc=taka@valinux.co.jp \ --cc=torvalds@linux-foundation.org \ --cc=vgoyal@redhat.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.