linux-ext4 - [Bug 76821] jbd2 write on disk each 2/3 seconds

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Message-ID: <bug-76821-13602-3KewHtNpGH@https.bugzilla.kernel.org/>
Date:	Sun, 25 May 2014 09:06:35 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 76821] jbd2 write on disk each 2/3 seconds

https://bugzilla.kernel.org/show_bug.cgi?id=76821

--- Comment #3 from Abdelhak Bougouffa <abdelhak@...ptolab.net> ---
Hi, 
Thank you Mr. Theodore

So, I tried this commands, and I get a big number of process! 

I observed that the kworker is not really the cause! the systemd-journal is
writing all times to the disk!, When I traced one of his used inodes, I found
it writing to /var/log/journal/****.journal, each time a file of 8MB.

http://pastebin.com/W3yu3SVH

It's notable that the debugging options:
    CONFIG_FUNCTION_TRACER
    CONFIG_FUNCTION_GRAPH_TRACER
    CONFIG_STACK_TRACER
    CONFIG_DYNAMIC_FTRACE

Are enabled in my working kernel (I installed it using the Arch repository)

Thanks!

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