Hi, On Wed, 2017-02-08 at 21:15 +0530, Amit Balode wrote: > Thanks Thomas, do you know if there is overhead of those flags? I > think trace would be expensive but what about others? Will they add > anything to pause time?
the bottleneck is 99% writing out the data. The internal per-line calculation overhead is negligible. However the amount of information printed may cause I/O issues. I think since at least G1PrintRegionLivenessInfo is a diagnostic option, you can turn it completely on and off at runtime. (In JDK9, everything is completely based on the unified logging, you can do that as well). Thanks, Thomas _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
