[concurrency-interest] ForkJoinPool not designed for nested Java 8 streams.parallel().forEach( ... )

Paul Sandoz paul.sandoz at oracle.com
Fri May 16 04:43:47 EDT 2014


On May 15, 2014, at 11:55 PM, Christian Fries <email at christian-fries.de> wrote:
> (Can JMH monitore cpu time?

Not that i am aware off, but have not looked too closely. There are a bunch of profilers available, i dunno if it is possible to plug in additional ones separate from JMH itself:

$ java -jar target/microbenchmarks.jar -lprof
Supported profilers:
                  gc: GC profiling via standard MBeans
                comp: JIT compiler profiling via standard MBeans
                  cl: Classloader profiling via standard MBeans
               hs_rt: HotSpot (tm) runtime profiling via implementation-specific MBeans
               hs_cl: HotSpot (tm) classloader profiling via implementation-specific MBeans
             hs_comp: HotSpot (tm) JIT compiler profiling via implementation-specific MBeans
               hs_gc: HotSpot (tm) memory manager (GC) profiling via implementation-specific MBeans
              hs_thr: HotSpot (tm) threading subsystem via implementation-specific MBeans
               stack: Simple and naive Java stack profiler


> (I did not find that) - If not, this is maybe a nice feature request).
> 

Yes.

Paul.
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