On Tue, Dec 22, 2009 at 9:10 AM, DOrlov <dor...@redaril.com> wrote: > > > > Leon Rosenberg-3 wrote: >> >> Hello, >> >> you should switch on GC logs and check whether the delays happen at >> the Full GC Time. >> You should also start with Xms = Xmx -> both 6144 (why exactly 6144? :-) >> ). >> >> -verbose:gc >> -XX:+PrintGCTimeStamps >> -XX:+PrintGCDetails >> > > Thank you for comment I will change Xmx, Xms (about 6144, it was set by our > admin :))) > About GC logging, I'm afraid that logging will reduce performance (I've > written, that this is production server). Do you have any figures of > performance lacks whith 'on' GC logging?
Hello, I have a lot of high performance sites (2000 requests per second and more) under my 'umbrella' but have never encountered any performance problems because of the gc logging (yet). btw add -Xloggc: logfilename to move gc logs into separate file. regards Leon > > We tried to reproduce issue by collecting production logs and reproducing > them via tcpreplay to test server, but we weren't able to reproduce issue > :(( > > Thanks, > Denis. > > -- > View this message in context: > http://old.nabble.com/TomCat-6-performance-issues-tp26884227p26885080.html > Sent from the Tomcat - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
