Hi Chris, Thank you for your help. I will monitor it via JMX.
2017-03-11 2:08 GMT+08:00 Christopher Schultz <ch...@christopherschultz.net> : > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Linbo, > > On 3/9/17 7:31 PM, linbo liao wrote: > > 1、The load-generating vm has 2 cores. > > With only 2 cores, you can only actually do 2 things at once. Perhaps > you need more load-generating computers. > > > 2、Can I use currentThreadsBusy to monitor the performance of Tomcat > > using APR connector? > > Yes, you can use that with any connector. The threads are Java > threads. Only the underlying file descriptors are being managed by APR > versus Java's BIO/NIO/2 stream managers. > > - -chris > > > 2017-03-10 0:42 GMT+08:00 Christopher Schultz > > <ch...@christopherschultz.net> : > > > > 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 > >>>>> > >>>>> > >>>> > >> > >> --------------------------------------------------------------------- > >> > >> > 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/ > > iQIcBAEBCAAGBQJYwuuvAAoJEBzwKT+lPKRYfCUP/1OEAoFvKMAY2Rmh9X0Gy+WN > ZIfnZOOUnC3onnEpgCGxucxXzfkf9jGljhIIqr+mXYu1urbhpgUaoGXT8CS7S4bn > SSE7GSQwaQ0dyqdzhc4F2/4LzMZ1J1u+Jakn/uQhlDv4eIrYMo4tNVGEaGdVA7jo > hU6Auy4ATY5NW/0zeefnukq8fp+CyyMGPESJGsCDL5czVjZ8zXyHo/4Px2kGyryt > 7GM/R+8RpapnrA3WFQs65MTMn7cQAbAZOSgvzUfCC6VQicn/rMuND07OgN7I4MUG > soEpRDjwY/41ynEUL5wID6uHsWJ9KrRldybhSQzwpI3FVNPHDCe3hRxNWPN0eULT > /u8fCK2jyswscRqfTuk1NKEQGJ4XQqMVo+Y0cJ9BAncUPA5OUN2zD/DLnIa06yLv > OXs3HjyFgwwEN9wMBxQyMedam5BkcjzjD6A5zdIV0isHyROa3idVl3B8HYyslhk5 > seLlCPOehr2MJsluzZjiciv4estnUf2Dm43aTc8c/1I12AMmLudAxkbGB5a4bkUt > mb4LXpV+pPuQ/rdWrBAuyvfAXYvlgjKmcWrKltrpzFuTU+VLW8GC/1IsLwYlDcpW > oilPZtfKEUp1hnsT8bKC1pywT3lX5MYT4acxbXcOAw1cSY+ocwPmum4J3NKBfcQP > mR5U4hKAZ926OQYwC/f6 > =E3ng > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
