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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - journald can be very slow (on btrfs ?)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78337">78337</a>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>journald can be very slow (on btrfs ?)
</td>
</tr>
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<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>mildred-bug.freedesktop@mildred.fr
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>general
</td>
</tr>
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<th>Product</th>
<td>systemd
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=98555" name="attach_98555" title="ls -l output">attachment 98555</a> <a href="attachment.cgi?id=98555&action=edit" title="ls -l output">[details]</a></span>
ls -l output
I used journald in both Fedora and ArchLinux, on a btrfs filesystem, and I
noticed on two occasions (once for each distribution) that journald can become
very slow, to the point where the boot proess is taking a very long time (more
than 10 minutes).
After getting a shell, I found that I couldn't access the log at all. Or it
took a very long time (a few minutes for `journalctl -fa`).
Removing (or moving away) all files in /var/log/journal fixed the problem and
the system was as fast as the first day.
I still have the old files for diagnosis if you want me to try something with
them.
Here is the output of --verify and --disk-usage
$ journalctl -D /var/log/journal/e92df66897d24a499a6b6ecf7e6a30c2- --disk-usage
Journals take up 4.0G on disk.
The output of --verify command (that was successful) and the list of files is
attached.</pre>
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