Public bug reported:

Binary package hint: apparmor

Ubuntu 8.04.2
Package: apparmor-utils
Version: 2.1+1075-0ubuntu9.2

My first experience with AppArmor was finding a kernel log file that was
full of 800 MB of AppArmor warnings from Samba and CUPS. I'm not sure
what suddenly enabled AppArmor on this LTS system, but while fixing the
problem I noticed....

aa-logprof, while processing an 800 MB log file, drove the load average
up into the high 40's. I suspect it was trying to load the whole thing
into memory (on a system with 1 GB of RAM). I'd recommend revising the
architecture so that it processes the lines as it sees them.

I worked around the problem by splitting the file into a dozen 75MB
chunks.

** Affects: apparmor (Ubuntu)
     Importance: Undecided
         Status: New

-- 
aa-logprof: doesn't handle large logs
https://bugs.launchpad.net/bugs/387657
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