-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Linbo,
On 3/8/17 8:13 PM, linbo liao wrote: > Here is the Connector configuration: > > <Connector port="8080" > protocol="org.apache.coyote.http11.Http11AprProtocol" > maxHttpHeaderSize="8192" maxThreads="400" acceptorThreadCount="4" > maxKeepAliveRequests="-1" enableLookups="false" > disableUploadTimeout="true" connectionTimeout="20000" /> > > I use wrk, the currentThreadsBusy is higher than the value in ab > testing, but most of time is less than 40. > > ./wrk -t100 -c 100 -d 10s http://10.211.55.4:8080/ I've never used wrk. How many CPU cores does your load-generating computer have? > For APR connector, will it get one thread from the poll to deal > with each request? For both NIO/2 and APR, you'll have one accepter thread (4 in your case) and one poller thread for many (400 in your case) request-processing threads. It's possible that your server is handling the requests fast enough that they never pile-up enough to use more than 40 threads. Congratulations: you can handle the load you are putting on the server. :) - -chris > 2017-03-08 22:45 GMT+08:00 Christopher Schultz > <ch...@christopherschultz.net >> : > > Linbo, > > On 3/7/17 10:14 PM, linbo liao wrote: >>>> I setup local environment to test Tomcat monitor. >>>> >>>> The Environment: >>>> >>>> Tomcat: 8.5.5 VM: Ubuntu 14.04.1 LTS HTTP PORT: 8080 IP: >>>> 10.211.55.4 >>>> >>>> Tomcat use APR connector, I test the tomcat via ab command, >>>> find JMX currentThreadsBusy < 10 all of the time. >>>> >>>> ab -n 100000 -c 100 10.211.55.4:8080/ >>>>> >>>> >>>> I tried to search the reason but without the result. For BIO >>>> each thread to handle one connection, so currentThreadsBusy >>>> can show the performance of tomcat. >>>> >>>> But for APR connector, what's the meaning of >>>> currentThreadsBusy? > > Please post your <Connector> configuration. > > It seems that ab isn't a very good load-generator for several > reasons. But you should be able to get more than Java 10 threads > working at a tim e. > > You are probably expecting ~100 threads busy at all times, right? > > -chris >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJYwYX2AAoJEBzwKT+lPKRYi2EP/1krL32JxAAkVa1C+lZiehoC KCufHoT/t4YK8yZRth+3TXK7wSqINwuZf+6PQXlQaR+Vy6chacS+DGvebsvBj58S q8Piu6kcTlnuK21nBBTW6pQ6vvLA7TpEaup8eCB3lVWIuUoTQlAL+OerAYP6M7pk 8oVHMatIJLSzhdjWo1S7Hz90TonGZvPb9Mk5587Dp8G2dKTu78abMVbGiR7xOn7g FMWS/k/HbAnGbkfwdTHww/inrXxfODfhcRuyyQW/j46PP6mQbzcjdjLuUGsKy6cm 8yUuy0h88o4l95X8oDf3yaI5nWZXvYuIHvT/9+L9DVhzpllol9CzBY6vXSFyuvQD Sd9GCNNgvQjN4CoKvlBeUIk7LOF7p4a15bBfDFnEAJVB7HGzU/Rx8Fp1+ON57pLA gN+IBT7joqCWissmZyO/lsQ6erQR2jmFvHBodXOEYFIy3WF3zGgt4K8KPfSxSCXu HtEuTR0enxBzSgfq0sx2nZxoetNn41BKPQo+T9E8zHTghoVGXHK8bpf1Z3/NZ2IP /9FUix6rxj+y1RaeQqXZmfnHPwRDsl+RV0tO/nGyqiD4LB9Gb+bM7yNZxsSTs3Uk YT6ZoZ1Dzys9Lifv+tFXK4pOWfeNAYo/3b58zGhHAlyEQySza8DgxTtsTql4i7TF Ebqjos00OCr3EeLg5ODi =6IxB -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
