From: jingguo yao <yaojingguo@gmail.com>
To: linux-ext4@vger.kernel.org
Subject: Why does journal mode outperforms all other modes when reading and writing data at the same time?
Date: Tue, 28 May 2013 22:39:18 +0800 [thread overview]
Message-ID: <CANPB7a4A+CbRcNoDc2=G=u8zy+q7ky=pGQxAMJrbxPC3sfytjw@mail.gmail.com> (raw)
Documentation/filesystems/ext4.txt has the following sentence:
This mode is the slowest except when data needs to be read from and
written to disk at the same time where it outperforms all others
modes.
And the following link talks about it in more details. Can anybody give
the reason?
http://www.ibm.com/developerworks/library/l-fs8/index.html#4
--
Jingguo
next reply other threads:[~2013-05-28 14:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-28 14:39 jingguo yao [this message]
2013-05-28 16:14 ` Why does journal mode outperforms all other modes when reading and writing data at the same time? Jan Kara
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