From: pavel <pavel@pavlinux.ru>
To: "Wolfgang M. Reimer" <linuxball@gmail.com>,
linux-rt-users@vger.kernel.org
Subject: Re: Where IOSCHED ?
Date: Sat, 25 Jul 2015 04:42:11 +0300 [thread overview]
Message-ID: <55B2E973.4060908@pavlinux.ru> (raw)
In-Reply-To: <55B206CF.3050000@gmail.com>
24.07.2015 12:35, Wolfgang M. Reimer пишет:
> 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=y
>> CONFIG_IOSCHED_DEADLINE=y
>> CONFIG_IOSCHED_CFQ=y
>> CONFIG_CFQ_GROUP_IOSCHED=y
>> CONFIG_DEFAULT_IOSCHED="cfq"
>>
> # cat /boot/config-3.18.17-rt14 | grep IOSCHED
> CONFIG_IOSCHED_NOOP=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_CFQ=y
> CONFIG_CFQ_GROUP_IOSCHED=y
> CONFIG_DEFAULT_IOSCHED="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 MSK 2015 x86_64 GNU/Linux
> # uname -a
> Linux t520-wolf 3.18.17-rt14 #1 SMP PREEMPT RT Tue Jul 7 14:23:12 CEST 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 GNU/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
--
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prev parent reply other threads:[~2015-07-25 1:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-22 20:05 Where IOSCHED ? Pavel Vasilyev
2015-07-23 12:39 ` Sebastian Andrzej Siewior
2015-07-25 1:44 ` pavel
2015-07-25 11:27 ` pavel
2015-07-24 9:35 ` Wolfgang M. Reimer
2015-07-25 1:42 ` pavel [this message]
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