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From: Alexey Borisenkov <grizlik78@gmail.com>
To: sisyphus@lists.altlinux.org
Subject: Re: [sisyphus] io scheduler noop вместо cfq по-умолчанию
Date: Wed, 17 Nov 2010 13:00:30 +0300
Message-ID: <4CE3A7BE.5090304@gmail.com> (raw)
In-Reply-To: <AANLkTi=QZexgo72OxnrCE6KH04ynygrbo8WzOpMHiDJu@mail.gmail.com>

17.11.2010 11:49, Denis G. Samsonenko пишет:
> [    2.246495] ata3.00: 625142448 sectors, multi 1: LBA48 NCQ (depth 31/32)
> Это значит, что у меня NCQ включён?

Да

> А тогда какой io-scheduler лучше использовать? Сейчас у меня так:
> # cat /sys/block/sd*/queue/scheduler
> noop anticipatory [cfq]
> noop anticipatory [cfq]
> noop anticipatory [cfq]
> noop anticipatory [cfq]
> noop anticipatory [cfq]

Вот как раз при включённом NCQ можно выбрать noop, а CFQ получается 
одним из худших вариантов.

> $ uname -r
> 2.6.32-un-def-alt5

Правда как раз с ядром .35 я, кажется, NCQ+CFQ не проверял.


  reply	other threads:[~2010-11-17 10:00 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-17  6:50 Aeliya Grevnyov
2010-11-17  6:55 ` Konstantin Pavlov
2010-11-17  7:46   ` Aeliya Grevnyov
2010-11-17  8:06     ` Aeliya Grevnyov
2010-11-17  8:20       ` Anton A. Vinogradov
2010-11-17 10:18         ` Aeliya Grevnyov
2010-11-17  8:49       ` Denis G. Samsonenko
2010-11-17 10:00         ` Alexey Borisenkov [this message]
2010-11-17 10:45           ` Denis G. Samsonenko
2010-11-17 10:49             ` Anton A. Vinogradov
2010-11-17 10:57               ` Denis G. Samsonenko
2010-11-17 11:03                 ` Anton A. Vinogradov
2010-11-17 11:17                   ` Alexey Borisenkov
2010-11-17 11:45                     ` Anton A. Vinogradov
2010-11-17 12:12                       ` Alexey Borisenkov
2010-11-17 11:14             ` Alexey Borisenkov
2010-11-17 11:57               ` Denis G. Samsonenko
2010-11-17 11:21             ` Lenar Shakirov
2010-11-17 11:49               ` Denis G. Samsonenko
2010-11-17  7:02 ` Anton Gorlov
2010-11-17 14:52 ` Michail Yakushin
2010-11-18  4:38   ` REAL

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