linux-ext4 - [Bug 62751] INFO: rcu_sched detected stalls on CPUs/tasks: { 3} (detected by 2, t=15107 jiffies, g=270766, c=270765, q=0)

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Message-ID: <bug-62751-13602-Z4tbHAqgYG@https.bugzilla.kernel.org/>
Date:	Fri, 20 Dec 2013 16:16:22 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 62751] INFO: rcu_sched detected stalls on CPUs/tasks: { 3}
 (detected by 2, t=15107 jiffies, g=270766, c=270765, q=0)

https://bugzilla.kernel.org/show_bug.cgi?id=62751

Theodore Tso <tytso@....edu> changed:

           What    |Removed                     |Added
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                 CC|                            |tytso@....edu

--- Comment #12 from Theodore Tso <tytso@....edu> ---
Hi Louis,

Can you talk a bit about your workload?   What sort of applications are you
running on the file system which is having the problems?   A database?  Squid
cache, something else?   Is it a lot of random writes?    What sort of files
does it create?  Does it create and delete a lot of files?   Etc.

It looks like your system has 8GB of memory --- is that right?   How much free
memory does your machine normally has?   Also, if you still have your ext4 file
system image, could you run "e2freefrag -v /dev/mapper/XXX"?

Many thanks!!

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