From: Dmitriy Kruglikov <dmitriy.kruglikov@gmail.com>
To: shigorin@gmail.com,
ALT Linux Community general discussions
<community@lists.altlinux.org>
Subject: Re: [Comm] Производительность
Date: Mon, 30 Jul 2012 09:41:11 +0300
Message-ID: <CAC4WpAxmud7mZ5sWsJB4eq_DZ2+8Xwa_QQ=-intqpwqVM5Nc2w@mail.gmail.com> (raw)
In-Reply-To: <20120730060657.GC31323@osdn.org.ua>
30 июля 2012 г., 9:06 пользователь Michael Shigorin <mike@osdn.org.ua> написал:
> Всё же /sys/block/sd?/queue/scheduler
Взгрустнулось... Поигрался...
Имеем raid1 ...
/dev/md5 on /opt type ext4
(rw,nosuid,nodev,relatime,barrier=0,nodelalloc,data=writeback)
# cat /sys/block/sda/queue/scheduler
noop anticipatory deadline [cfq]
# cat /sys/block/sdb/queue/scheduler
noop anticipatory deadline [cfq]
Тестовое задание:
# dd if=/dev/zero bs=1M count=5000 of=./zero.dd
Для cfq
LA ~ 3,2
5242880000 bytes (5.2 GB) copied, 55.0603 s, 95.2 MB/s
Для noop
LA ~ 6,02
5242880000 bytes (5.2 GB) copied, 62.1367 s, 84.4 MB/s
Для deadline
LA ~ 3,7
5242880000 bytes (5.2 GB) copied, 46.8136 s, 112 MB/s
Для anticipatory
LA ~ 2,2
5242880000 bytes (5.2 GB) copied, 47.8624 s, 110 MB/s
До отрывания bimap и при data=ordered
тестовое задание выполнялось со скоростью ~ 43 MB/s при LA ~ 10-12 ...
Может быть кто-то где-то как-то почерпнет для себя "О пользе
правильных defaults"...
;)
--
Best regards,
Dmitriy Kruglikov.
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next prev parent reply other threads:[~2012-07-30 6:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-28 10:40 Vladimir Karpinsky
2012-07-28 10:57 ` vx8400
2012-07-28 11:08 ` Dmitriy Kruglikov
2012-07-28 11:32 ` Vladimir Karpinsky
2012-07-28 11:37 ` Dmitriy Kruglikov
2012-07-28 11:47 ` Vladimir Karpinsky
2012-07-28 13:02 ` Dmitriy Kruglikov
2012-07-28 13:41 ` Vladimir Karpinsky
2012-07-28 17:20 ` Vladimir Karpinsky
2012-07-30 6:49 ` Michael Shigorin
2012-07-30 6:53 ` Dmitriy Kruglikov
2012-07-30 8:06 ` Vladimir Karpinsky
2012-07-30 13:18 ` Michael Shigorin
2012-07-30 14:39 ` Vladimir Karpinsky
2012-07-28 13:04 ` Vladimir Karpinsky
2012-07-29 0:36 ` Alexei Takaseev
2012-07-30 5:40 ` Anton Gorlov
2012-07-30 6:06 ` Michael Shigorin
2012-07-30 6:41 ` Dmitriy Kruglikov [this message]
2012-07-30 11:24 ` adobrovolskii
2012-07-30 11:32 ` Michael Shigorin
2012-07-30 12:14 ` adobrovolskii
2012-07-30 16:27 ` Dmitry Chistikov
2012-07-31 7:38 ` adobrovolskii
2012-07-30 11:34 ` Dmitriy Kruglikov
2012-07-30 6:41 ` Michael Shigorin
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