id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	appname	phpversion	exts	sapi	probability	blockedby	blocking
252	Potential memory leak	mxxcon	moo	"Ubuntu server 10.04LTS, Apache 2.2.14-5ubuntu8.2, XCache 1.3.0-5ubuntu1.
{{{
xcache.shm_scheme =        ""mmap""
xcache.size  =                64M
xcache.count =                 2
xcache.slots =                8K
xcache.ttl   =                 0
xcache.gc_interval =           0
xcache.var_size  =            0M
xcache.var_count =             1
xcache.var_slots =            8K
xcache.var_ttl   =             0
xcache.var_maxttl   =          0
xcache.var_gc_interval =     300
xcache.test =                Off
xcache.readonly_protection = Off
xcache.mmap_path =    ""/dev/zero""
xcache.coverager =          Off
}}}
After a while the server starts to use up all available memory and then all available swap and then becomes unresponsive. Tried adjusting xcache.ini settings without change in behavior. Switching XCache for APC makes the server stable again.
attached in a screenshot of cacti's monitoring memory usage. toward the end of the graph is when we switched to apc."	defect	closed	major	1.3.2	cacher	1.3.0	duplicate				5.3.2-1ubuntu4.5		Irrelevant	Always