View source for Monitoring and Tuning Garbage Collection

==== Monitoring and Tuning Garbage Collection ====
To monitor the frequency of Garbage Collection inside the JVM:
:{|
<pre>
$java_home/bin/jstat  -gcutil pid <intervalmillis> 
[root@web1]# /usr/local/java/bin/jstat -gcutil 12929 5000
     S0    S1      E      O      P      YGC   YGCT   FGC   FGCT    GCT   
    0.00  42.66  37.32  12.82  26.96   4845  145.414  26  1.745  147.159
    0.00  42.66  37.78  12.82  26.96   4845  145.414  26  1.745  147.159
    0.00  42.66  57.70  12.82  26.96   4845  145.414  26  1.745  147.159
</pre>
|}

Tuning parameters are set in <tt>catalina.sh</tt> under <tt>CATALINA_OPTS</tt>

Learn More:'' http://java.sun.com/javase/technologies/hotspot/gc/gc_tuning_6.html

[[Category:Installation]]