Could be gc, could be hotspot compiler, or could be library There was a massive improvement in the performance of the G1 GC in u60 when dealing with "humongous" objects; however I assume you wouldn't have been using G1 before u60 for anything real (that was when it first became usable.
If you attach visualvm and sample, you should get a better idea of were the performance wins are coming from. wrapping the app as a pseudo jmh benchmark and running using perfasm as the profiler (needs hsdis, Linux, and perf) may be more precise (e.g. better inlining, different instruction use, etc). Simon On Oct 9, 2017 5:21 PM, "Rob Tompkins" <chtom...@gmail.com> wrote: Hey all, At my day job we saw a 60% performance improvement (cpu utilization) between 1.8.0_40 and 1.8.0_121, and I was wondering if anyone else out there has seen anything like that before or if anyone might know what could cause that given that the release notes don’t directly point to anything. Cheers, -Rob --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
