-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Satish,
On 4/17/15 7:20 AM, satish jupalli wrote: > I would like to support a bust in traffic we are planning to > increase the umber of threads by adding executor pool with > misSpareThread to 100 and accept count to 50000. However, I'm > trying to understand the correlation between the tomcat connector > acceptCount and ThreadCount to the Linux config > net.core.somaxconn(number of incoming connections) which defaults > to 128. The thread count isn't really a part of this discussion: only the accept count and /proc/sys/net/core/somaxx > Does it makes sense to increase the thread count alone with out > increasing net.core.somaxconn value? Probably not; Linux limits the accept queue using that value and will not allow client code to exceed that limit. https://computing.llnl.gov/linux/slurm/high_throughput.html > Below is the config that we are planning to use on Tomcat 7.0.42 on > Linux 5.x. (You should upgrade to 7.0.62 as soon as it feasible for you.) > <Executor name="tomcatThreadPool" namePrefix="tomcat-http-" > minSpareThreads="100" maxThreads="300"/> > > <Connector port="8080" protocol="HTTP/1.1" > connectionTimeout="20000" redirectPort="8443" > enableLookups="false" keepAliveTimeout="300000" > maxKeepAliveRequests="1" acceptCount="50000" socketBuffer="10240" > executor="tomcatThreadPool" compression="on" > compressableMimeType="text/html, text/xml" xpoweredBy="false" > server="false" /> > > Any inputs regarding the Tomcat threads and Linux > net.core.somaxconn will be greatly appreciated to support many > concurrent connections. If you use acceptCount="50000", Tomcat will ask for that socket queue size and simply won't get it. You should definitely raise the value of somaxx on Linux. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJVMQG4AAoJEBzwKT+lPKRYFuMQAMMbBv7v5jOTHz302TMYNbMB sc1qH9IuV7Z1DrqAOE+yN19xdzt+7cakNl5YWomHr/U3ePNianLeqY+27WYYUm9V gTw/kHqBOUYfWttnlFzDCBidUDPw6m3TnhFq8Oia5UBdfPh4IQDR+zxF9FCkncUi 51evAzsp4gzAOMjDUmxMQMCfYQML1l+VX56Za4RT4S6z2L6HCxyjeVYQSc2nsLnU Y6G3X0ccomxszHhb5GuU82lldgKjw5BDubkp57/fxBajZ6QcWSU7sr+HlaoAUfLz +p/PSJhyXDMxlKqGmGsBK8BMMsK5H26yup5LtpKkLDEJuUYSv5N1rsklmQCbUuXk 0pBzFmVKQG2CRh2miutBC7Vr5l3AOP5ghV2uOOvuCBg+Sg8pzImase2m9Nw9Z1sh XnLrrJq7a/nvd4C2jRT/y01AJNfv0qJG95RjBxoVdoQ629fjK05Z2MB7avL2Qzwq 8JpcwhkfhVAWW87JVAIMPluILNuhCCg/LDQSVj4twdtGBy181E29yNSfmIRkq33j 2Jc83/gLgNU+maM4RzXKWzFYpk8ccLMhHsbh8txqswK+rV8XDfQTLZzxy43IawCK Nc1rBnWCVQOPMxjumfZWuZtdAy/HlSpw1otRVkXNVONOCLwMcAggLbjeO1TFJiJj MArVB8ONarkbkDts2quG =vSf+ -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
