From: Dave Hansen <dave@sr71.net>
To: Dave Hansen <dave.hansen@intel.com>,
linux-ext4@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
"Theodore Ts'o" <tytso@mit.edu>, Jan kara <jack@suse.cz>,
gnehzuil.liu@gmail.com
Subject: Re: ext4 extent status tree LRU locking
Date: Wed, 12 Jun 2013 10:52:13 -0700 [thread overview]
Message-ID: <51B8B54D.2040200@sr71.net> (raw)
In-Reply-To: <20130612160320.GA29156@gmail.com>
FWIW, I'm also seeing this contention to a much smaller extent on much
more "normal" hardware. I've got a 6-core (as opposed to 80) desktop
machine where I'm doing the same test on a real disk (instead of a
loopback-mounted ramfs file).
I'm seeing _about_ 10% CPU time being used on just spinning on the same
ext4 LRU lock.
next prev parent reply other threads:[~2013-06-12 17:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-11 23:22 ext4 extent status tree LRU locking Dave Hansen
2013-06-12 7:17 ` Zheng Liu
2013-06-12 15:09 ` Dave Hansen
2013-06-12 16:03 ` Zheng Liu
2013-06-12 17:52 ` Dave Hansen [this message]
2013-06-12 20:48 ` Theodore Ts'o
2013-06-13 13:27 ` Zheng Liu
2013-06-13 13:35 ` Theodore Ts'o
2013-06-14 3:27 ` Zheng Liu
2013-06-14 14:09 ` Zheng Liu
2013-06-14 14:02 ` Theodore Ts'o
2013-06-14 17:00 ` Zheng Liu
2013-06-14 18:00 ` Theodore Ts'o
2013-06-17 10:10 ` Zheng Liu
2013-06-17 21:12 ` Dave Hansen
2013-06-18 2:25 ` Zheng Liu
2013-06-18 2:51 ` Theodore Ts'o
2013-06-18 3:49 ` Zheng Liu
2013-06-18 2:47 ` Theodore Ts'o
2013-06-14 15:57 ` Dave Hansen
2013-06-14 17:11 ` Zheng Liu
2013-06-14 16:55 ` Dave Hansen
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