On 05/06/2020 14:08, Martin Grigorov wrote: > For load testing it I use wrk: wrk -c96 -t8 -d60s https://host:port/test > The GC JVM arguments are: -Xloggc:./gc.log -XX:+PrintGCDetails -verbose:gc > JDK 1.8.0 b252 > > The GC logs are: > - Tomcat 9.0.x (uses > SynchronizedQueue/Stack): > https://gist.github.com/martin-g/d2570e7a6896e4d094ce548ceea3adb6 > - Tomcat 9.0.x with my > changes: https://gist.github.com/martin-g/52c7d3a883b37e9bcd11ad6430800852 > I've uploaded them to https://gceasy.io/ and the charts are similar.
lock-free has marginally higher throughput. It has a longer GC pause but that might be a result of running longer (~x2 longer). Average creation rate and average promotion rate are lower. Given this was with Java 8 I'm +1 to switching Tomcat 10 and also +1 to switching Tomcat 9 if we can do it without impacting the API. I'm neutral on making the change in Tomcat 8.5 and -0.5 on Tomcat 7. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
