The library browser is a memory hog as it renders many problems in a single Apache worker. Gateway quizes also have similar issues.
You can reduce the memory it will use somewhat by:
- lowering MaxSpareServers (don't waste too much space on idle workers)
- lowering MaxRequestWorkers (do not allow to many to run, to avoid swapping and performance degredation)
- lowering MaxConnectionsPerChild (meant to kill workers before they get very large)
Adding in /etc/apache2/conf-enabled/webwork.conf (or wherever the real webwork.conf is on your system)
# size limiter for Apache2
use Apache2::SizeLimit;
$Apache2::SizeLimit::MAX_PROCESS_SIZE = 340000;
$Apache2::SizeLimit::MAX_UNSHARED_SIZE = 340000;
$Apache2::SizeLimit::CHECK_EVERY_N_REQUESTS = 5;
near the top of the <Perl> section. Search the forums for more about this.