If you read the javadoc for java.util.concurrent ThreadPoolExecutor you'll see that the number of threads will only increase when the queue has reached its capacity. Crazy / stupid behaviour if you ask me... But expected.
I've been caught out by this before when I set core pool size to 1, expecting the thread size to increase under load. On 1 Jul 2014 02:53, "D Tim Cummings" <t...@triptera.com.au> wrote: > Hi > > I am using Tapestry 5.3.7 and the ParallelExecutor. When I increase the > max-pool-size I am not able to use any more threads. However when I > increase the core-pool-size I am able to use more threads. It looks like > the max-pool-size is not doing anything (or I am not understanding what it > is supposed to do). > > When I use the defaults I get a maximum of 3 threads and other threads > seem to wait in a queue and execute later. > > When I use the following settings in web.xml I still get only 3 threads > > <context-param> > <param-name>tapestry.thread-pool.core-pool-size </param-name> > <param-value>3</param-value> > </context-param> > <context-param> > <param-name>tapestry.thread-pool.max-pool-size</param-name> > <param-value>20</param-value> > </context-param> > > When I use the following settings in web.xml I get 3 threads > > <context-param> > <param-name>tapestry.thread-pool.core-pool-size </param-name> > <param-value>3</param-value> > </context-param> > <context-param> > <param-name>tapestry.thread-pool.max-pool-size</param-name> > <param-value>200</param-value> > </context-param> > > When I use the following settings in web.xml I get 20 threads > > <context-param> > <param-name>tapestry.thread-pool.core-pool-size </param-name> > <param-value>20</param-value> > </context-param> > <context-param> > <param-name>tapestry.thread-pool.max-pool-size</param-name> > <param-value>20</param-value> > </context-param> > > I noticed that the documentation says the default max-pool-size is 20 ( > http://tapestry.apache.org/parallel-execution.html ) while the API docs > say the default is 10 ( > http://tapestry.apache.org/current/apidocs/org/apache/tapestry5/ioc/IOCSymbols.html > ). > > I am invoking my threads from a service which contains > > @Inject > private ParallelExecutor executor; > > @Override > public void doStartThread() { > if ( myFuture == null || myFuture.isDone() ) { > myFuture = executor.invoke(new MyInvokable()); > } > } > > I have tried in Jetty 8.1.2 (Run Jetty Run in Eclipse) and Tomcat 7.0.52. > > Cheers > > Tim >
