Public bug reported:
Binary package hint: quassel
Quassel writes to the hard drive *very* often, seemingly after each log
entry. It is very obvious when it's displaying the MOTD upon connecting,
which takes several seconds as it waits for the hard drive to commit the
log to disk after each single line.
Attaching copy/pasted log file. Note the timestamps; roughly 10 seconds
just to *display* the MOTD. Admittedly, to make it more obvious I had a
file being copied in the background, so the numbers are exaggerated to
show the worst possible case.
This is a netbook - Advent 4211 (rebranded MSI Wind) - which as such has
limited (and noisy) hdd performance, making the write activity very
obvious. The machine is running the Jaunty beta, and the logfile
(~/.config/quassel-irc.org/quassel-storage.sqllite) is on an ext4
partition (with noatime, to boot).
$ apt-cache policy quassel
quassel:
Installed: 0.4.1-0ubuntu3
Candidate: 0.4.1-0ubuntu3
Version table:
*** 0.4.1-0ubuntu3 0
500 http://archive.ubuntu.com jaunty/main Packages
100 /var/lib/dpkg/status
Largely irrelevant, but for posterity:
$ uname -a
Linux lethe 2.6.29-02062901-generic #02062901 SMP Fri Apr 3
14:17:44 UTC 2009 i686 GNU/Linux
... from http://kernel.ubuntu.com/~kernel-ppa/mainline.
** Affects: quassel (Ubuntu)
Importance: Undecided
Status: New
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Quassel very I/O intensive, fsync()ing to disk after each log entry
https://bugs.launchpad.net/bugs/355552
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