From: bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org
To: linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [Bug 54271] readahead() docs incorrectly say it blocks
Date: Tue, 26 Feb 2013 14:37:12 +0000 (UTC) [thread overview]
Message-ID: <20130226143712.EEB3911FC6E@bugzilla.kernel.org> (raw)
In-Reply-To: <bug-54271-11311-3bo0kxnWaOQUvHkbgXJLS5sdmw4N0Rt+2LY78lusg7I@public.gmane.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=54271
--- Comment #6 from Michael Kerrisk <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2013-02-26 14:37:12 ---
I'd be interested to see a (simple) script or log file so I can follow your
steps.
I tried repeating the same measurements (read() an entire file, readahead() the
entire file) for a variety of other file systems: XFS, JFS, Reiserfs. In each
case, the time taken for the read loop to complete and the readahead() system
call to complete were similar (10 to 15 seconds for a 1GB file).
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next prev parent reply other threads:[~2013-02-26 14:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-23 4:25 [Bug 54271] New: readahead() docs incorrectly say it blocks bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
[not found] ` <bug-54271-11311-3bo0kxnWaOQUvHkbgXJLS5sdmw4N0Rt+2LY78lusg7I@public.gmane.org/>
2013-02-25 9:36 ` [Bug 54271] " bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-02-25 15:47 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-02-25 20:55 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-02-26 0:56 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-02-26 3:15 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-02-26 14:37 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r [this message]
2013-02-26 15:57 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2013-04-08 15:09 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2014-03-15 9:11 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
2014-03-15 9:11 ` bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r
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