Threadpooltaskexecutor multithreaded use

1. Configuring the Threadpooltaskexecutor Bean

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "http://www.springframework.org/schema/beans"Xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "http://www.springframework.org/schema/context"xsi:schemalocation= "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd " >        <!--Scan Annotations -    <Context:component-scanBase-package= "com.qi.quartz">        <Context:exclude-filtertype= "annotation"expression= "org.springframework.stereotype.Controller" />    </Context:component-scan>        <BeanID= "taskexecutor"name= "taskexecutor"class= "org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">          <!--number of core threads thread pool maintains minimum number of threads -        < propertyname= "corepoolsize"value= "ten" />          <!--the thread pool maintains idle time allowed by threads -        < propertyname= "keepaliveseconds"value= "$" />          <!--maximum number of threads maintained by the thread pool -        < propertyname= "maxpoolsize"value= " the" />          <!--buffer queue used by the thread pool -        < propertyname= "queuecapacity"value= "+" />         <!--The thread pool handles the policy of rejecting a task (a wireless thread is available), the Threadpoolexecutor.callerrunspolicy policy, the Caller's threads perform the task, and if the executor is closed, it is discarded.  -        < propertyname= "rejectedexecutionhandler">            <Beanclass= "java.util.concurrent.threadpoolexecutor$callerrunspolicy" />        </ property>     </Bean>      </Beans>

2.controller use

 packagecom.qi.quartz.web;Importjavax.annotation.Resource;Importorg.slf4j.Logger;Importorg.slf4j.LoggerFactory;Importorg.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;Importorg.springframework.stereotype.Controller;Importorg.springframework.web.bind.annotation.RequestMapping;Importorg.springframework.web.bind.annotation.ResponseBody, @Controller @requestmapping ("/test") public classThreadpoolexcutecontroller {Logger LOG= Loggerfactory.getlogger (threadpoolexcutecontroller.class); @Resource (name= "taskexecutor")    PrivateThreadpooltaskexecutor taskexecutor; @RequestMapping ("/execute") @ResponseBody public voidExecute () {taskexecutor.execute (NewRunnable () { public voidRun () {Try{log.info ("before the execution thread task begins"); Thread.CurrentThread (). Sleep (10000); if(log.isdebugenabled ()) {log.info ("execute Thread Task end"); }                } Catch(interruptedexception E) {e.printstacktrace ();    }            }                    }); }}

3. using Apache AB concurrency test

/usr/local/apache2/bin/ab-n 1000-c Http://192.168.8.101:8080/QuartzDemo/test/execute

Benchmarking 192.168.8.101 (be Patient)
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Completed requests
Finished requests

Server software:apache-coyote/1.1
Server hostname:192.168.8.101
Server port:8080

Document Path:/quartzdemo/test/execute
Document Length:3 bytes

Concurrency level:1000
Time taken for tests:41.982 seconds
Complete requests:1000
Failed requests:0
Write errors:0
Total transferred:163000 bytes
HTML transferred:3000 bytes
Requests per second:23.82 [#/sec] (mean)
Time per request:41982.345 [ms] (mean)
Time per request:41.982 [ms] (mean, across all concurrent requests)
Transfer rate:3.79 [kbytes/sec] received

Connection Times (ms)
Min mean[+/-sd] median max
Connect:1 304 211.4 291 1077
processing:172 22968 13412.1 21237 41240
waiting:161 22900 13455.0 21174 41171
total:472 23272 13441.8 21505 41944

Percentage of the requests served within a certain time (ms)
50% 21505
66% 31398
75% 31725
80% 40963
90% 41467
95% 41605
98% 41930
99% 41939
100% 41944 (longest Request)

We configured the core to handle 10 threads, a maximum of 20, a buffer queue of 100, a total time of 41.982, as we change these configurations, the processing situation is Different.

Change the configuration to

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "http://www.springframework.org/schema/beans"Xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "http://www.springframework.org/schema/context"xsi:schemalocation= "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd " >        <!--Scan Annotations -    <Context:component-scanBase-package= "com.qi.quartz">        <Context:exclude-filtertype= "annotation"expression= "org.springframework.stereotype.Controller" />    </Context:component-scan>        <BeanID= "taskexecutor"name= "taskexecutor"class= "org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">          <!--number of core threads thread pool maintains minimum number of threads -        < propertyname= "corepoolsize"value= "+" />          <!--the thread pool maintains idle time allowed by threads -        < propertyname= "keepaliveseconds"value= "$" />          <!--maximum number of threads maintained by the thread pool -        < propertyname= "maxpoolsize"value= "+" />          <!--buffer queue used by the thread pool -        < propertyname= "queuecapacity"value= "$" />         <!--The thread pool handles the policy of rejecting a task (a wireless thread is available), the Threadpoolexecutor.callerrunspolicy policy, the Caller's threads perform the task, and if the executor is closed, it is discarded.  -        < propertyname= "rejectedexecutionhandler">            <Beanclass= "java.util.concurrent.threadpoolexecutor$callerrunspolicy" />        </ property>     </Bean>      </Beans>

Perform tests

./ab-n 1000-c Http://192.168.8.101:8080/QuartzDemo/test/execute

1000 requests, 1000 concurrent at a time

Results

Server software:apache-coyote/1.1Server Hostname:192.168.8.101Server Port:8080Document Path:/quartzdemo/test/executedocument Length:0bytesconcurrency level: +time taken forTests22.452Secondscomplete requests: +Failed requests:0Write errors:0Total Transferred:121121byteshtml transferred:0bytesrequests per second:44.54[#/sec] (mean) Time per request:22452.351[ms] (mean) time per request:22.452[ms] (mean, across all concurrent requests) Transfer rate:5.27[kbytes/sec] receivedconnection times (ms) min mean[+/-sd] Median maxconnect:1  216 403.0      the    3035processing: about 6209 6834.3   1431   21534waiting:209 6208 6834.3   1431   21534Total:334 6425 7071.3   1529   22421Percentage of the requests served within a certain time(ms) -%1529   the%11318   the%11630   the%11830   -%21315   the%22316  98%22338   about%22353  -%22421(longest Request)

It can be seen that it took only 22.452 seconds, but our requests were much higher 1000*1000-100*100 = 990000.

of course, as to how many threads to open, but also to see how the MACHINE.

Threadpooltaskexecutor multithreaded use