On 9/29/13 7:35 PM, Daniel Wu wrote: > Without the pool, it's lightning fast. JProfiler shows most of the time is > consumed on locking, thread dump also shows the pool always waits. > I tried to timing the pool operations, the results proved the JProfiler > reports > > e,g. with 50 threads, the log shows > Average Response Time:0.06 > Average Borrow Time:0.04 > Average Return Time:0.02 > > So, the time are consumed with StringBuilder and GC is negligible, most of > the time are wasted in pool locking. > > With 100 threads, the log shows > Average Response Time:1.24 > Average Borrow Time:0.90 > Average Return Time:0.34 > > The more threads try to content with the pool, the slower the pool is. > > I kind of believe CP is just slow. > What happens when you replace the append with a no-op?
Phil --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org
