From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>,
Paolo Valente
<paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Fabio Checconi
<fchecconi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Arianna Avanzini
<avanzini.arianna-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Paolo Valente <posta_paolo-whZMOeQn8C0@public.gmane.org>
Subject: Re: [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler
Date: Wed, 4 Jun 2014 10:51:31 -0700 [thread overview]
Message-ID: <20140604175131.GA25388@infradead.org> (raw)
In-Reply-To: <20140604145829.GF5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
On Wed, Jun 04, 2014 at 10:58:29AM -0400, Tejun Heo wrote:
> I think what Jens is planning is something really minimal. Things
> like [cb]fq heavily depend on the old block infrastructure. I don't
> know. Maybe they can be merged in time but I'm not quite sure we'd
> have enough pressure to actually do that. Host-granular switching
> should be good enough, I guess.
Jens told me he wanted to do a deadline scheduler, which actually is
the most sensible for disks unless you want all the cgroup magic.
Given that people in this thread are interested in more complex
schedulers I'd suggest they implement BFQ for blk-mq.
next prev parent reply other threads:[~2014-06-04 17:51 UTC|newest]
Thread overview: 107+ 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
[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
[not found] ` <1401194558-5283-2-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
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 ` [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
[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
[not found] ` <1401354343-5527-2-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
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
[not found] ` <1401354343-5527-3-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:37 ` Tejun Heo
[not found] ` <20140530153718.GB24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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
2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 03/12] block, bfq: improve throughput boosting 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 ` [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 - 07/12] block, bfq: reduce I/O latency for soft real-time applications 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
[not found] ` <1401354343-5527-9-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-31 13:48 ` Tejun Heo
[not found] ` <20140531134823.GB24557-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-02 9:58 ` Paolo Valente
2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 10/12] block, bfq: add Early Queue Merge (EQM) Paolo Valente
[not found] ` <1401354343-5527-11-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-06-01 0:03 ` Tejun Heo
[not found] ` <20140601000331.GA29085-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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
[not found] ` <20140603162844.GD26210-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-04 11:47 ` Paolo Valente
2014-06-04 13:04 ` Tejun Heo
[not found] ` <20140604130446.GA5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-16 11:23 ` Paolo Valente
2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 11/12] block, bfq: boost the throughput on NCQ-capable flash-based devices Paolo Valente
[not found] ` <1401354343-5527-12-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:46 ` Tejun Heo
[not found] ` <20140530154654.GE24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-05-30 22:01 ` Paolo Valente
2014-05-31 11:52 ` Tejun Heo
[not found] ` <20140531115216.GB5057-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 9:26 ` Paolo Valente
[not found] ` <36BFDB73-AEC2-4B87-9FD6-205E9431E722-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-06-03 17:11 ` Tejun Heo
[not found] ` <20140603171124.GE26210-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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
[not found] ` <20140604135627.GB5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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
2014-05-29 9:05 ` [PATCH RFC - TAKE TWO - 12/12] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs Paolo Valente
[not found] ` <1401354343-5527-13-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:51 ` Tejun Heo
2014-05-31 13:34 ` Tejun Heo
2014-05-30 16:07 ` [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Tejun Heo
[not found] ` <20140530160712.GG24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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
[not found] ` <20140530232804.GA5057-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-05-30 23:54 ` Paolo Valente
2014-06-02 11:14 ` Pavel Machek
[not found] ` <20140602111432.GA3737-tWAi6jLit6GreWDznjuHag@public.gmane.org>
2014-06-02 13:02 ` Pavel Machek
[not found] ` <20140602130226.GA14654-tWAi6jLit6GreWDznjuHag@public.gmane.org>
2014-06-03 16:54 ` Paolo Valente
[not found] ` <FCFE0106-A4DD-4DEF-AAAE-040F3823A447-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-06-03 20:40 ` Pavel Machek
2014-06-04 8:39 ` 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
[not found] ` <20140604100358.GA4799-tWAi6jLit6GreWDznjuHag@public.gmane.org>
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
[not found] ` <s5hsink3mxk.wl%tiwai-l3A5Bk7waGM@public.gmane.org>
2014-06-04 12:12 ` Paolo Valente
2014-06-11 20:45 ` Paolo Valente
[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
2014-06-02 17:33 ` [PATCH RFC - TAKE TWO - 00/12] New version of the BFQ I/O Scheduler Tejun Heo
[not found] ` <20140602173332.GB8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-03 4:12 ` Mike Galbraith
2014-06-04 22:31 ` Pavel Machek
[not found] ` <20140604223152.GA7881-tWAi6jLit6GreWDznjuHag@public.gmane.org>
2014-06-05 2:14 ` 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
[not found] ` <20140531051635.GA19925-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-02 14:29 ` Jens Axboe
[not found] ` <538C8A47.1050502-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-06-02 17:24 ` Tejun Heo
[not found] ` <20140602172454.GA8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 17:32 ` Jens Axboe
[not found] ` <538CB515.3090700-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-06-02 17:42 ` Tejun Heo
[not found] ` <20140602174250.GC8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 17:46 ` Jens Axboe
[not found] ` <538CB87C.7030600-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-06-02 18:51 ` Tejun Heo
[not found] ` <20140602185138.GD8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 20:57 ` Jens Axboe
[not found] ` <20140602205713.GB8357-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-06-04 14:31 ` Christoph Hellwig
[not found] ` <20140604143136.GA1920-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2014-06-04 14:50 ` Tejun Heo
[not found] ` <20140604145053.GE5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-04 14:53 ` Christoph Hellwig
[not found] ` <20140604145330.GA2955-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2014-06-04 14:58 ` Tejun Heo
[not found] ` <20140604145829.GF5004-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-04 17:51 ` Christoph Hellwig [this message]
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
[not found] ` <20140619014600.GA20100-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-19 1:49 ` Tejun Heo
2014-06-19 2:29 ` Jens Axboe
[not found] ` <53A24B1C.1070004-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-06-23 13:53 ` Paolo Valente
[not found] ` <8F719638-0CD7-4BD2-8F4F-088913A0EE2D-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-06-23 19:20 ` Tejun Heo
[not found] ` <20140623192022.GA19660-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-07-09 20:54 ` 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
[not found] ` <20140531135402.GC24557-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-02 9:54 ` Paolo Valente
2014-05-27 12:42 ` [PATCH RFC RESEND 02/14] block: introduce the BFQ-v0 I/O scheduler paolo
2014-05-27 12:42 ` [PATCH RFC RESEND 03/14] block: add hierarchical-support option to kconfig 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 ` [PATCH RFC RESEND 05/14] block, bfq: improve throughput boosting paolo
2014-05-27 12:42 ` [PATCH RFC RESEND 06/14] block, bfq: modify the peak-rate estimator 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 ` [PATCH RFC RESEND 08/14] block, bfq: improve responsiveness 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 ` [PATCH RFC RESEND 10/14] block, bfq: preserve a low latency also with NCQ-capable drives 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 ` [PATCH RFC RESEND 13/14] block, bfq: boost the throughput on NCQ-capable flash-based devices 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
[not found] ` <20140530153228.GE16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-30 16:16 ` Tejun Heo
[not found] ` <20140530161650.GH24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-05-30 17:09 ` Vivek Goyal
[not found] ` <20140530170958.GF16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-30 17:26 ` Tejun Heo
[not found] ` <20140530172609.GI24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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 23:33 ` Paolo Valente
2014-05-30 17:31 ` Vivek Goyal
[not found] ` <20140530173146.GG16605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-05-30 17:39 ` Tejun Heo
2014-05-27 12:42 ` [PATCH RFC RESEND 12/14] block, bfq: add Early Queue Merge (EQM) paolo
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