From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 42895] jbd2 makes all system unresponsive
Date: Wed, 2 May 2012 16:08:49 GMT
Message-ID: <201205021608.q42G8nHM019903@bugzilla.kernel.org>
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Theodore Tso changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tytso@mit.edu
--- Comment #3 from Theodore Tso 2012-05-02 16:08:48 ---
It sounds like something in userspace is simply calling fsync() very
frequently. Can you try the following:
echo 1 > /sys/kernel/debug/tracing/events/ext4/ext4_sync_file_enter/enable
... then wait for a minute or so, and then capture the output of:
cat /sys/kernel/debug/tracing/trace
That should allow us to see what is causing the excess commits.
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