From: Paolo Valente <paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> To: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org> Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Fabio Checconi <fchecconi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Arianna Avanzini <avanzini.arianna-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: Re: [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Date: Tue, 3 Jun 2014 18:54:53 +0200 [thread overview] Message-ID: <FCFE0106-A4DD-4DEF-AAAE-040F3823A447@unimore.it> (raw) In-Reply-To: <20140602130226.GA14654-tWAi6jLit6GreWDznjuHag@public.gmane.org> Il giorno 02/giu/2014, alle ore 15:02, Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org> ha scritto: > Hi! > >>> Well, it's all about how to actually route the changes and in general >>> whenever avoidable we try to avoid whole-sale code replacement >>> especially when most of the structural code is similar like in this >>> case. Gradually evolving cfq to bfq is likely to take more work but >>> I'm very positive that it'd definitely be a lot easier to merge the >>> changes that way and people involved, including the developers and >>> reviewers, would acquire a lot clearer picture of what's going on in >>> the process. For example, AFAICS, most of the heuristics added by >> >> Would it make sense to merge bfq first, _then_ turn cfq into bfq, then >> remove bfq? >> >> That way >> >> 1. Users like me would see improvements soon >> >> 2. BFQ would get more testing early. > > Like this: I applied patch over today's git... > > I only see last bits of panic... > > Call trace: > __bfq_bfqq_expire > bfq_bfqq_expire > bfq_dispatch_requests > sci_request_fn > ... > EIP: T.1839+0x26 > Kernel panic - not syncing: Fatal exception in interrupt > Shutting down cpus with NMI > > ... > > Will retry. > > Any ideas? > We have tried to think about ways to trigger this failure, but in vain. Unfortunately, so far no user has reported any failure with this last version of bfq either. Finally, we have gone through a new static analysis, but also in this case uselessly. So, if you are willing to retry, we have put online a version of the code filled with many BUG_ONs. I hope they can make it easier to track down the bug. The archive is here: http://algogroup.unimore.it/people/paolo/disk_sched/debugging-patches/3.15.0-rc8-v7rc5.tgz Should this attempt be useless as well, I will, if you do not mind, try by asking you more details about your system and reproducing your configuration as much as I can. Thanks, Paolo > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Valente <paolo.valente@unimore.it> To: Pavel Machek <pavel@ucw.cz> Cc: Tejun Heo <tj@kernel.org>, Jens Axboe <axboe@kernel.dk>, Li Zefan <lizefan@huawei.com>, Fabio Checconi <fchecconi@gmail.com>, Arianna Avanzini <avanzini.arianna@gmail.com>, linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org, cgroups@vger.kernel.org Subject: Re: [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Date: Tue, 3 Jun 2014 18:54:53 +0200 [thread overview] Message-ID: <FCFE0106-A4DD-4DEF-AAAE-040F3823A447@unimore.it> (raw) In-Reply-To: <20140602130226.GA14654@amd.pavel.ucw.cz> Il giorno 02/giu/2014, alle ore 15:02, Pavel Machek <pavel@ucw.cz> ha scritto: > Hi! > >>> Well, it's all about how to actually route the changes and in general >>> whenever avoidable we try to avoid whole-sale code replacement >>> especially when most of the structural code is similar like in this >>> case. Gradually evolving cfq to bfq is likely to take more work but >>> I'm very positive that it'd definitely be a lot easier to merge the >>> changes that way and people involved, including the developers and >>> reviewers, would acquire a lot clearer picture of what's going on in >>> the process. For example, AFAICS, most of the heuristics added by >> >> Would it make sense to merge bfq first, _then_ turn cfq into bfq, then >> remove bfq? >> >> That way >> >> 1. Users like me would see improvements soon >> >> 2. BFQ would get more testing early. > > Like this: I applied patch over today's git... > > I only see last bits of panic... > > Call trace: > __bfq_bfqq_expire > bfq_bfqq_expire > bfq_dispatch_requests > sci_request_fn > ... > EIP: T.1839+0x26 > Kernel panic - not syncing: Fatal exception in interrupt > Shutting down cpus with NMI > > ... > > Will retry. > > Any ideas? > We have tried to think about ways to trigger this failure, but in vain. Unfortunately, so far no user has reported any failure with this last version of bfq either. Finally, we have gone through a new static analysis, but also in this case uselessly. So, if you are willing to retry, we have put online a version of the code filled with many BUG_ONs. I hope they can make it easier to track down the bug. The archive is here: http://algogroup.unimore.it/people/paolo/disk_sched/debugging-patches/3.15.0-rc8-v7rc5.tgz Should this attempt be useless as well, I will, if you do not mind, try by asking you more details about your system and reproducing your configuration as much as I can. Thanks, Paolo > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2014-06-03 16:54 UTC|newest] Thread overview: 247+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-05-27 12:42 [PATCH RFC RESEND 00/14] New version of the BFQ I/O Scheduler paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 12/14] block, bfq: add Early Queue Merge (EQM) paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 14/14] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs paolo 2014-05-27 12:42 ` paolo [not found] ` <1401194558-5283-1-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-27 12:42 ` [PATCH RFC RESEND 01/14] block: kconfig update and build bits for BFQ paolo 2014-05-27 12:42 ` paolo 2014-05-28 22:19 ` Tejun Heo 2014-05-28 22:19 ` Tejun Heo [not found] ` <20140528221929.GG1419-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Paolo Valente 2014-05-29 9:05 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 05/12] block, bfq: add more fairness to boost throughput and reduce latency Paolo Valente 2014-05-29 9:05 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 06/12] block, bfq: improve responsiveness Paolo Valente [not found] ` <1401354343-5527-7-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 15:41 ` Tejun Heo 2014-05-30 15:41 ` Tejun Heo 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 08/12] block, bfq: preserve a low latency also with NCQ-capable drives Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-9-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-31 13:48 ` Tejun Heo 2014-05-31 13:48 ` Tejun Heo [not found] ` <20140531134823.GB24557-9pTldWuhBndy/B6EtB590w@public.gmane.org> 2014-06-02 9:58 ` Paolo Valente 2014-06-02 9:58 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 09/12] block, bfq: reduce latency during request-pool saturation Paolo Valente [not found] ` <1401354343-5527-10-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-31 13:54 ` Tejun Heo 2014-05-31 13:54 ` Tejun Heo 2014-06-02 9:54 ` Paolo Valente 2014-06-02 9:54 ` Paolo Valente [not found] ` <20140531135402.GC24557-9pTldWuhBndy/B6EtB590w@public.gmane.org> 2014-06-02 9:54 ` Paolo Valente [not found] ` <1401354343-5527-1-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 01/12] block: introduce the BFQ-v0 I/O scheduler Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-2-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 15:36 ` Tejun Heo 2014-05-30 15:36 ` Tejun Heo 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 02/12] block, bfq: add full hierarchical scheduling and cgroups support Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-3-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 15:37 ` Tejun Heo 2014-05-30 15:37 ` Tejun Heo 2014-05-30 15:37 ` Tejun Heo 2014-05-30 15:39 ` Tejun Heo 2014-05-30 15:39 ` Tejun Heo [not found] ` <20140530153943.GC24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 21:49 ` Paolo Valente 2014-05-30 21:49 ` Paolo Valente [not found] ` <20140530153718.GB24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 15:39 ` Tejun Heo 2014-05-30 21:49 ` Paolo Valente 2014-05-30 21:49 ` Paolo Valente 2014-05-30 21:49 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 03/12] block, bfq: improve throughput boosting Paolo Valente 2014-05-29 9:05 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 04/12] block, bfq: modify the peak-rate estimator Paolo Valente 2014-05-29 9:05 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 05/12] block, bfq: add more fairness to boost throughput and reduce latency Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 06/12] block, bfq: improve responsiveness Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 07/12] block, bfq: reduce I/O latency for soft real-time applications Paolo Valente 2014-05-29 9:05 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 08/12] block, bfq: preserve a low latency also with NCQ-capable drives Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 09/12] block, bfq: reduce latency during request-pool saturation Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 10/12] block, bfq: add Early Queue Merge (EQM) Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-11-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-01 0:03 ` Tejun Heo 2014-06-01 0:03 ` Tejun Heo 2014-06-01 0:03 ` Tejun Heo 2014-06-02 9:46 ` Paolo Valente 2014-06-02 9:46 ` Paolo Valente [not found] ` <3B7B1A46-46EB-4C52-A52C-4F79C71D14C2-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-03 16:28 ` Tejun Heo 2014-06-03 16:28 ` Tejun Heo [not found] ` <20140603162844.GD26210-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-04 11:47 ` Paolo Valente 2014-06-04 11:47 ` Paolo Valente [not found] ` <91383F1F-69C3-4B88-B51E-30204818F1AB-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-04 13:04 ` Tejun Heo 2014-06-04 13:04 ` Tejun Heo [not found] ` <20140604130446.GA5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-16 11:23 ` Paolo Valente 2014-06-16 11:23 ` Paolo Valente 2014-06-16 11:23 ` Paolo Valente [not found] ` <20140601000331.GA29085-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-02 9:46 ` Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 11/12] block, bfq: boost the throughput on NCQ-capable flash-based devices Paolo Valente 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 12/12] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs Paolo Valente 2014-05-30 16:07 ` [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Tejun Heo 2014-05-30 16:07 ` Tejun Heo [not found] ` <20140530160712.GG24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 22:23 ` Paolo Valente 2014-05-30 22:23 ` Paolo Valente [not found] ` <464F6CBE-A63E-46EF-A90D-BF8450430444-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 23:28 ` Tejun Heo 2014-05-30 23:28 ` Tejun Heo 2014-05-30 23:28 ` Tejun Heo [not found] ` <20140530232804.GA5057-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 23:54 ` Paolo Valente 2014-05-30 23:54 ` Paolo Valente 2014-06-02 11:14 ` Pavel Machek 2014-06-02 11:14 ` Pavel Machek 2014-06-02 11:14 ` Pavel Machek [not found] ` <20140602111432.GA3737-tWAi6jLit6GreWDznjuHag@public.gmane.org> 2014-06-02 13:02 ` Pavel Machek 2014-06-02 13:02 ` Pavel Machek [not found] ` <20140602130226.GA14654-tWAi6jLit6GreWDznjuHag@public.gmane.org> 2014-06-03 16:54 ` Paolo Valente [this message] 2014-06-03 16:54 ` Paolo Valente 2014-06-04 8:39 ` Pavel Machek 2014-06-04 8:39 ` Pavel Machek [not found] ` <FCFE0106-A4DD-4DEF-AAAE-040F3823A447-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-03 20:40 ` Pavel Machek 2014-06-03 20:40 ` Pavel Machek 2014-06-04 8:39 ` Pavel Machek 2014-06-04 9:08 ` Pavel Machek 2014-06-04 9:08 ` Pavel Machek 2014-06-04 10:03 ` BFQ speed tests [was Re: [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler] Pavel Machek 2014-06-04 10:03 ` Pavel Machek 2014-06-04 10:03 ` Pavel Machek [not found] ` <20140604100358.GA4799-tWAi6jLit6GreWDznjuHag@public.gmane.org> 2014-06-04 10:24 ` Paolo Valente 2014-06-04 10:24 ` Paolo Valente [not found] ` <4888F93F-D58D-48DD-81A6-A6D61C452D92-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-04 11:59 ` Takashi Iwai 2014-06-04 11:59 ` Takashi Iwai 2014-06-04 11:59 ` Takashi Iwai 2014-06-04 12:12 ` Paolo Valente 2014-06-04 12:12 ` Paolo Valente [not found] ` <s5hsink3mxk.wl%tiwai-l3A5Bk7waGM@public.gmane.org> 2014-06-04 12:12 ` Paolo Valente 2014-06-11 20:45 ` Paolo Valente 2014-06-11 20:45 ` Paolo Valente 2014-06-13 16:21 ` Takashi Iwai 2014-06-13 16:21 ` Takashi Iwai [not found] ` <6A4905B2-ACAA-419D-9C83-659BE9A5B20B-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-13 16:21 ` Takashi Iwai 2014-06-11 20:39 ` Paolo Valente 2014-06-11 20:39 ` Paolo Valente 2014-06-02 17:33 ` [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Tejun Heo 2014-06-02 17:33 ` Tejun Heo [not found] ` <20140602173332.GB8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-03 4:12 ` Mike Galbraith 2014-06-03 4:12 ` Mike Galbraith 2014-06-04 22:31 ` Pavel Machek 2014-06-04 22:31 ` Pavel Machek [not found] ` <20140604223152.GA7881-tWAi6jLit6GreWDznjuHag@public.gmane.org> 2014-06-05 2:14 ` Jens Axboe 2014-06-05 2:14 ` Jens Axboe 2014-05-31 0:48 ` Jens Axboe 2014-05-31 0:48 ` Jens Axboe 2014-05-31 0:48 ` Jens Axboe [not found] ` <538926F6.7080409-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-05-31 5:16 ` Tejun Heo 2014-05-31 5:16 ` Tejun Heo 2014-05-31 5:16 ` Tejun Heo [not found] ` <20140531051635.GA19925-9pTldWuhBndy/B6EtB590w@public.gmane.org> 2014-06-02 14:29 ` Jens Axboe 2014-06-02 14:29 ` Jens Axboe [not found] ` <538C8A47.1050502-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-06-02 17:24 ` Tejun Heo 2014-06-17 15:55 ` Paolo Valente 2014-06-17 15:55 ` Paolo Valente [not found] ` <0A5218F8-0215-4B4F-959B-EE5AAEFC164A-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-19 1:46 ` Tejun Heo 2014-06-19 1:46 ` Tejun Heo 2014-06-19 1:46 ` Tejun Heo [not found] ` <20140619014600.GA20100-9pTldWuhBndy/B6EtB590w@public.gmane.org> 2014-06-19 1:49 ` Tejun Heo 2014-06-19 2:29 ` Jens Axboe 2014-06-19 2:29 ` Jens Axboe [not found] ` <53A24B1C.1070004-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-06-23 13:53 ` Paolo Valente 2014-06-23 13:53 ` Paolo Valente 2014-06-23 19:20 ` Tejun Heo 2014-06-23 19:20 ` Tejun Heo [not found] ` <20140623192022.GA19660-9pTldWuhBndy/B6EtB590w@public.gmane.org> 2014-07-09 20:54 ` Paolo Valente 2014-07-09 20:54 ` Paolo Valente [not found] ` <8F719638-0CD7-4BD2-8F4F-088913A0EE2D-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-23 19:20 ` Tejun Heo 2014-06-19 1:49 ` Tejun Heo 2014-06-19 1:49 ` Tejun Heo 2014-06-02 17:24 ` Tejun Heo 2014-06-02 17:24 ` Tejun Heo 2014-06-02 17:32 ` Jens Axboe 2014-06-02 17:32 ` Jens Axboe [not found] ` <538CB515.3090700-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-06-02 17:42 ` Tejun Heo 2014-06-02 17:42 ` Tejun Heo [not found] ` <20140602174250.GC8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-02 17:46 ` Jens Axboe 2014-06-02 17:46 ` Jens Axboe 2014-06-02 18:51 ` Tejun Heo 2014-06-02 18:51 ` Tejun Heo [not found] ` <20140602185138.GD8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-02 20:57 ` Jens Axboe 2014-06-02 20:57 ` Jens Axboe [not found] ` <20140602205713.GB8357-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-06-04 14:31 ` Christoph Hellwig 2014-06-04 14:31 ` Christoph Hellwig 2014-06-04 14:31 ` Christoph Hellwig [not found] ` <20140604143136.GA1920-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> 2014-06-04 14:50 ` Tejun Heo 2014-06-04 14:50 ` Tejun Heo [not found] ` <20140604145053.GE5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-04 14:53 ` Christoph Hellwig 2014-06-04 14:53 ` Christoph Hellwig [not found] ` <20140604145330.GA2955-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> 2014-06-04 14:58 ` Tejun Heo 2014-06-04 14:58 ` Tejun Heo [not found] ` <20140604145829.GF5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-04 17:51 ` Christoph Hellwig 2014-06-04 17:51 ` Christoph Hellwig [not found] ` <538CB87C.7030600-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org> 2014-06-02 18:51 ` Tejun Heo [not found] ` <20140602172454.GA8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-02 17:32 ` Jens Axboe 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 11/12] block, bfq: boost the throughput on NCQ-capable flash-based devices Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-12-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 15:46 ` Tejun Heo 2014-05-30 15:46 ` Tejun Heo [not found] ` <20140530154654.GE24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 22:01 ` Paolo Valente 2014-05-30 22:01 ` Paolo Valente 2014-05-31 11:52 ` Tejun Heo 2014-05-31 11:52 ` Tejun Heo [not found] ` <20140531115216.GB5057-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-02 9:26 ` Paolo Valente 2014-06-02 9:26 ` Paolo Valente 2014-06-03 17:11 ` Tejun Heo 2014-06-03 17:11 ` Tejun Heo [not found] ` <20140603171124.GE26210-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-04 7:29 ` Paolo Valente 2014-06-04 7:29 ` Paolo Valente [not found] ` <03CDD106-DB18-4E8F-B3D6-2AAD45782A06-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-04 13:56 ` Tejun Heo 2014-06-04 13:56 ` Tejun Heo 2014-06-04 13:56 ` Tejun Heo [not found] ` <20140604135627.GB5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-06-16 10:46 ` Paolo Valente 2014-06-16 10:46 ` Paolo Valente [not found] ` <D163E069-ED77-4BF5-A488-9A90C41C60C1-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-19 1:14 ` Tejun Heo 2014-06-19 1:14 ` Tejun Heo [not found] ` <36BFDB73-AEC2-4B87-9FD6-205E9431E722-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-06-03 17:11 ` Tejun Heo 2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 12/12] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs Paolo Valente 2014-05-29 9:05 ` Paolo Valente [not found] ` <1401354343-5527-13-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-30 15:51 ` Tejun Heo 2014-05-30 15:51 ` Tejun Heo 2014-05-31 13:34 ` Tejun Heo 2014-05-31 13:34 ` Tejun Heo [not found] ` <1401194558-5283-2-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org> 2014-05-28 22:19 ` [PATCH RFC RESEND 01/14] block: kconfig update and build bits for BFQ Tejun Heo 2014-05-27 12:42 ` [PATCH RFC RESEND 02/14] block: introduce the BFQ-v0 I/O scheduler paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 03/14] block: add hierarchical-support option to kconfig paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 04/14] block, bfq: add full hierarchical scheduling and cgroups support paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 05/14] block, bfq: improve throughput boosting paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 06/14] block, bfq: modify the peak-rate estimator paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 07/14] block, bfq: add more fairness to boost throughput and reduce latency paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 08/14] block, bfq: improve responsiveness paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 09/14] block, bfq: reduce I/O latency for soft real-time applications paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 10/14] block, bfq: preserve a low latency also with NCQ-capable drives paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 11/14] block, bfq: reduce latency during request-pool saturation paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 12/14] block, bfq: add Early Queue Merge (EQM) paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 13/14] block, bfq: boost the throughput on NCQ-capable flash-based devices paolo 2014-05-27 12:42 ` paolo 2014-05-27 12:42 ` [PATCH RFC RESEND 14/14] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs paolo 2014-05-30 15:32 ` [PATCH RFC RESEND 00/14] New version of the BFQ I/O Scheduler Vivek Goyal 2014-05-30 15:32 ` Vivek Goyal 2014-05-30 16:16 ` Tejun Heo 2014-05-30 16:16 ` Tejun Heo [not found] ` <20140530161650.GH24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 17:09 ` Vivek Goyal 2014-05-30 17:09 ` Vivek Goyal [not found] ` <20140530170958.GF16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2014-05-30 17:26 ` Tejun Heo 2014-05-30 17:26 ` Tejun Heo [not found] ` <20140530172609.GI24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org> 2014-05-30 17:55 ` Vivek Goyal 2014-05-30 17:55 ` Vivek Goyal [not found] ` <20140530175527.GH16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2014-05-30 17:59 ` Tejun Heo 2014-05-30 17:59 ` Tejun Heo 2014-05-30 17:59 ` Tejun Heo 2014-05-30 23:33 ` Paolo Valente 2014-05-30 23:33 ` Paolo Valente [not found] ` <20140530153228.GE16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2014-05-30 16:16 ` Tejun Heo 2014-05-30 17:31 ` Vivek Goyal 2014-05-30 17:31 ` Vivek Goyal [not found] ` <20140530173146.GG16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> 2014-05-30 17:39 ` Tejun Heo 2014-05-30 17:39 ` Tejun Heo
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