Hi all, I don't know if this is useful but apart from utilities/commands already mentioned, I use the following to monitor the GC of the particular generations in JVM:
/usr/jdk/jdk1.5.0_12/bin/jstat -gc $TOMCAT_PID 5000 10 Of course you need to substitute the appropriate JDK installed on your system and the time interval the stats should be printed. Cheers, Igor On Fri, May 27, 2011 at 6:07 PM, Mikolaj Rydzewski <m...@ceti.pl> wrote: > On Fri, 27 May 2011 09:50:06 +0200, André Warnier wrote: > > Searching the WWW, I am finding (too) many interpretations of the >> output of "-verbose:gc" (or "-verbosegc", none of them starting from >> exactly the format above. >> I can kind of guess what the above means, but where can I find an >> "authoritative" interpretation for Sun/Oracle Java 1.6 ? >> >> Also, does anyone know if there is a way to specify that instead of >> the unreadable leading timestamp above, one can get a nicely-formatted >> one ? >> (-XX:+PrintGCTimeStamps ?) >> > > I use the following options: > > -Xloggc:gc.log -XX:+PrintGCDetails -XX:+PrintGCTimeStamps > > We use nice tool from HP (HPJmeter) at work. It parses GC logfile and > produces various graphs. I guess you can download it for free from > www.hp.com/go/java > > -- > Mikolaj Rydzewski <m...@ceti.pl> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
