From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Luigi Semenzato <semenzato@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: extremely long blockages when doing random writes to SSD
Date: Fri, 26 Jun 2015 10:42:48 +0900 [thread overview]
Message-ID: <20150626014248.GA26543@swordfish> (raw)
In-Reply-To: <CAA25o9TCj0YSw1JhuPVsu9PzEMwnC2pLHNvNdMa+0OpJd1X64Q@mail.gmail.com>
On (06/25/15 18:31), Luigi Semenzato wrote:
> We're using CFQ.
>
> CONFIG_DEFAULT_IOSCHED="cfq"
> ...
> CONFIG_IOSCHED_CFQ=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_NOOP=y
>
any chance to try out DEADLINE?
CFQ, as far as I understand, doesn't make too much sense for SSDs.
-ss
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next prev parent reply other threads:[~2015-06-26 1:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-24 21:54 extremely long blockages when doing random writes to SSD Luigi Semenzato
2015-06-24 22:25 ` Andrew Morton
2015-06-24 23:43 ` Luigi Semenzato
2015-06-25 18:24 ` Luigi Semenzato
2015-06-26 0:58 ` Sergey Senozhatsky
2015-06-26 1:31 ` Luigi Semenzato
2015-06-26 1:42 ` Sergey Senozhatsky [this message]
2015-06-26 1:43 ` Luigi Semenzato
2015-06-26 18:24 ` Luigi Semenzato
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