Only 54 µs of that 68 ms collection was a pause
A gctrace line carries eleven numbers. Two are stop-the-world, one has a third of the GC subtracted out of it, and the biggest one is not a pause at all.
#profiling
Articles tagged “profiling”
2 articlesRuntime internals
Green Tea cut my GC time 63%, and raised it 39%
One heap shape lost 63% of its collector CPU and gained 14% throughput. Another gained 39% collector CPU and lost nothing. Same flag, same binary pair, same machine.