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: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20140528221929.GG1419@htj.dyndns.org>
[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
[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@htj.dyndns.org>
[not found] ` <20140530153718.GB24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-05-30 15:39 ` Tejun Heo
2014-05-30 21:49 ` Paolo Valente
[not found] ` <20140530153943.GC24871@htj.dyndns.org>
[not found] ` <20140530153943.GC24871-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
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 - 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 ` [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
[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@htj.dyndns.org>
[not found] ` <20140601000331.GA29085-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 9:46 ` Paolo Valente
[not found] ` <3B7B1A46-46EB-4C52-A52C-4F79C71D14C2@unimore.it>
[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
[not found] ` <91383F1F-69C3-4B88-B51E-30204818F1AB-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-06-04 13:04 ` Tejun Heo
[not found] ` <20140604130446.GA5004@htj.dyndns.org>
[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
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
[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@htj.dyndns.org>
[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@amd.pavel.ucw.cz>
[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@amd.pavel.ucw.cz>
[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@kernel.dk>
[not found] ` <538926F6.7080409-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2014-05-31 5:16 ` Tejun Heo
[not found] ` <20140531051635.GA19925@mtj.dyndns.org>
[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
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@mtj.dyndns.org>
[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@mtj.dyndns.org>
[not found] ` <20140623192022.GA19660-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-07-09 20:54 ` Paolo Valente
[not found] ` <20140602172454.GA8912@htj.dyndns.org>
[not found] ` <20140602172454.GA8912-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2014-06-02 17:32 ` Jens Axboe
[not found] ` <538CB515.3090700@kernel.dk>
[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@htj.dyndns.org>
[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@infradead.org>
[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]
[not found] ` <1401354343-5527-7-git-send-email-paolo.valente@unimore.it>
[not found] ` <1401354343-5527-7-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:41 ` [PATCH RFC - TAKE TWO - 06/12] block, bfq: improve responsiveness Tejun Heo
[not found] ` <1401354343-5527-12-git-send-email-paolo.valente@unimore.it>
[not found] ` <1401354343-5527-12-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:46 ` [PATCH RFC - TAKE TWO - 11/12] block, bfq: boost the throughput on NCQ-capable flash-based devices 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@htj.dyndns.org>
[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@htj.dyndns.org>
[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
[not found] ` <1401354343-5527-13-git-send-email-paolo.valente@unimore.it>
[not found] ` <1401354343-5527-13-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-30 15:51 ` [PATCH RFC - TAKE TWO - 12/12] block, bfq: boost the throughput with random I/O on NCQ-capable HDDs Tejun Heo
2014-05-31 13:34 ` Tejun Heo
[not found] ` <1401354343-5527-9-git-send-email-paolo.valente@unimore.it>
[not found] ` <1401354343-5527-9-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-31 13:48 ` [PATCH RFC - TAKE TWO - 08/12] block, bfq: preserve a low latency also with NCQ-capable drives Tejun Heo
[not found] ` <20140531134823.GB24557-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-02 9:58 ` Paolo Valente
[not found] ` <1401354343-5527-10-git-send-email-paolo.valente@unimore.it>
[not found] ` <1401354343-5527-10-git-send-email-paolo.valente-rcYM44yAMweonA0d6jMUrA@public.gmane.org>
2014-05-31 13:54 ` [PATCH RFC - TAKE TWO - 09/12] block, bfq: reduce latency during request-pool saturation Tejun Heo
[not found] ` <20140531135402.GC24557-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2014-06-02 9:54 ` Paolo Valente
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