Script to look for system call errors

[Eugene Teo]

Hi all,

Last night I was working on a script to look for system call errors.
This is particularly useful for identifying misbehaving userspace
applications. The script prints out useful information about the top 20
errors every 5 secs.

With the script, I found out that mixer_applet2 wakes up very
frequently[1], gnome-panel tries to add a collection of watches every
second for files that do not exist, hald tries to open some
battery-related sysfs files over and over again even though I am running
the script in a virtual machine. mjw has a couple of interesting
observations with the script as well.

Take a look at the example output in errsnoop.txt.

Any feedback on this script would be appreciated.

[1] http://bugzilla.gnome.org/show_bug.cgi?id=370937

Thanks, Eugene
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