Weblogic GC Problem - Please assist
Hi,
I am working on WebLogic(for the first time) with a sun JVM on a 8 CPU solaris machine, we have set the GC algorithm as,
"-Xms2048m -Xmx2048m -XX:NewSize=576m -XX:MaxNewSize=576m -XX:PermSize=256m -XX:MaxPermSize=256m -XX:SurvivorRatio=8 -Xverify:none -verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -XX:+PrintTenuringDistribution -XX:+UseParallelGC "
The problem is The FULL GC takes consistently between 15 - 20 sec, firstly is that a concern?
We see that the heap is used up to 1.9 GB before it GC's
The CPU Utilzation on box is not high below 40% on an average.
Is using the "Concurrent Low Pause Collector" a good option in this case?
Please assist.
Thanks in advance.
Following GC trace,
4028.217: [GC 1425000K->1003932K(2012352K), 0.4191734 secs]
4028.637: [Full GC[Unloading class sun.reflect.GeneratedMethodAccessor655]
[Unloading class jsp_servlet._web_45_inf._apcwp._ptrck._jsp.__ptstatementpdf]
[Unloading class sun.reflect.GeneratedMethodAccessor1726]
[Unloading class jsp_servlet._web_45_inf._apfa._opnac._jsp.__ocainput]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._hkcareer._jsp.__main]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._hkcareer._jsp.__job]
[Unloading class jsp_servlet._web_45_inf._apcwp._ptrck._jsp.__ptstatement]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor290]
[Unloading class sun.reflect.GeneratedMethodAccessor1725]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor356]
[Unloading class sun.reflect.GeneratedMethodAccessor2253]
[Unloading class sun.reflect.GeneratedMethodAccessor653]
[Unloading class jsp_servlet._web_45_inf._jba._common._jsp.__cantdo]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor357]
[Unloading class jsp_servlet._web_45_inf._apeba._ebrk_reg._rsp._jsp.__screen100]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor355]
[Unloading class jsp_servlet._web_45_inf._apcwp._myprf._jsp.__profilesummary]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor323]
[Unloading class jsp_servlet._web_45_inf._jba._ada._jsp.__adaprintfriendly]
[Unloading class sun.reflect.GeneratedMethodAccessor654]
[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor335]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._itvisa._jsp.__itvisaempdet]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._hkcareer._jsp.__generic]
[Unloading class sun.reflect.GeneratedMethodAccessor652]
[Unloading class sun.reflect.GeneratedMethodAccessor1966]
[Unloading class jsp_servlet._web_45_inf._aptc._fxrates._jsp.__fxrateview]
[Unloading class sun.reflect.GeneratedMethodAccessor2252]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._itvisa._jsp.__dummy]
[Unloading class jsp_servlet._web_45_inf._jso._uidn._jsp.__successcinpin]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._hkcareer._jsp.__service]
[Unloading class jsp_servlet._web_45_inf._apfa._hkgcb._hkcareer._jsp.__job_list_category_unit]
[Unloading class jsp_servlet._web_45_inf._aptc._fxrates._jsp.__calculate]
[Unloading class jsp_servlet._web_45_inf._jba._scdp._jsp.__displaynopayeeinlistscreen]
1003932K->862215K(2015232K), 15.3721435 secs]
