From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel Subject: Re: Where IOSCHED ? Date: Sat, 25 Jul 2015 04:42:11 +0300 Message-ID: <55B2E973.4060908@pavlinux.ru> References: <55AFF784.7040900@pavlinux.ru> <55B206CF.3050000@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE To: "Wolfgang M. Reimer" , linux-rt-users@vger.kernel.org Return-path: Received: from forward13p.cmail.yandex.net ([87.250.241.140]:34101 "EHLO forward13p.cmail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753083AbbGYBvs (ORCPT ); Fri, 24 Jul 2015 21:51:48 -0400 In-Reply-To: <55B206CF.3050000@gmail.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: 24.07.2015 12:35, Wolfgang M. Reimer =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > On 22.07.2015 22:05, Pavel Vasilyev wrote: > >> # dmesg | grep sched >> [ 0.387902] io scheduler noop registered >> [ 0.387989] io scheduler deadline registered >> [ 0.388079] io scheduler cfq registered (default) >> > # dmesg | grep sched > [ 0.516085] io scheduler noop registered > [ 0.516089] io scheduler deadline registered (default) > [ 0.516096] io scheduler cfq registered > >> # cat /boot/config-3.18.17-rt14 | grep IOSCHED >> CONFIG_IOSCHED_NOOP=3Dy >> CONFIG_IOSCHED_DEADLINE=3Dy >> CONFIG_IOSCHED_CFQ=3Dy >> CONFIG_CFQ_GROUP_IOSCHED=3Dy >> CONFIG_DEFAULT_IOSCHED=3D"cfq" >> > # cat /boot/config-3.18.17-rt14 | grep IOSCHED > CONFIG_IOSCHED_NOOP=3Dy > CONFIG_IOSCHED_DEADLINE=3Dy > CONFIG_IOSCHED_CFQ=3Dy > CONFIG_CFQ_GROUP_IOSCHED=3Dy > CONFIG_DEFAULT_IOSCHED=3D"deadline" > > >> # cat /sys/block/sda/queue/scheduler >> none >> > # cat /sys/block/sda/queue/scheduler > noop [deadline] cfq > >> # uname -a >> Linux localhost 3.18.17-rt14 #1 SMP PREEMPT RT Wed Jul 22 18:49:51 M= SK 2015 x86_64 GNU/Linux > # uname -a > Linux t520-wolf 3.18.17-rt14 #1 SMP PREEMPT RT Tue Jul 7 14:23:12 CES= T 2015 x86_64 x86_64 x86_64 GNU/Linux > > > Hi Pavel, > > so in my case /sys/block/sda/queue/scheduler shows the correct I/O > schedulers for the *same* kernel (3.18.17-rt14). The only difference = is > that my default I/O scheduler is "deadline". > > Wolfgang > Maybe my mistake, but I use a Soft RAID1 $ cat /sys/block/{sd,md}*/queue/scheduler none none none none none none -- Other server (Debian 6.0.10): non RT, but with soft RAID1 too. $ uname -a Linux mail 2.6.32-5-amd64 #1 SMP Wed Jun 17 16:09:06 UTC 2015 x86_64 GN= U/Linux $ cat /sys/block/{sd,md}*/queue/scheduler noop anticipatory deadline [cfq] noop anticipatory deadline [cfq] none none none here: sda,sdb,md0,md1,md2,md3 -- -- To unsubscribe from this list: send the line "unsubscribe linux-rt-user= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html