-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Marko,
On 11/20/13, 8:14 AM, marko lugarič wrote: > Hello > > The tests are run in the following manner: around 5 min to start > the server and connect all clients. Then I can apply load from > clients: on the graph I applied only half load for first seven > minutes an then full load but this is not required - I can go with > full load after all clients connect. So once full load is applied > usually in less then 5 minutes pool has no connections (it) - then > I can leave it for half hour (tested today) and nothing changes (0 > empty and zero active connections). But i didn't have logAbandonded > set - I can test this too if you think there will be difference. In > the usual test when i saw that there is no connections I turned off > server (2 - 5 minutes later). Having logAbandoned set to "true" is pretty critical, here. Please re-enabled it and re-test. In a separate thread, markt pointed out that Tomcat-pool allows you to leak resources much more readily than the dbcp-based pool if you don't exercise proper resource management. I posted a link to my old blog post on the subject, and I'll post it here again as well: http://blog.christopherschultz.net/index.php/2009/03/16/properly-handling-pooled-jdbc-connections/ If you have sloppy JDBC resource management, you are going to waste resources on both the client and the server unless you have a pool that spends inordinate resources tracking everything to clean up after your sloppy code. Tomcat-pool has a StatementFinalizer interceptor (http://tomcat.apache.org/tomcat-7.0-doc/jdbc-pool.html#org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer) that you can use to help clean-up the messes that you create. It would be better, though, to clean-up your resources. Dan Mikasa suggested using a tool like Findbugs on your code, which easily identifies things like potential leaks in JDBC resources. It's well worth the time to download and run it. (Besides, all you need is a JAR file with your code and you can just say "scan the JAR file for bugs". It does not require a great deal of setup). - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSjLjpAAoJEBzwKT+lPKRYdh8QAKuJ95EY3YktG0GsM+Vp/PYK P3y4t88ImLtWYIWo2mfeAUaY5sh371yC8ihGcy2m6d/qv+s+lfWpKf/MlaOycvBk 5203PRPvSSDI9Tlh19IA6/9urf6YsXDcw62j7X6oOoTQN2GoilhovIl7jUPcTc2M dqizRvJDmsWJMODeL0E1Ne1P84AnilNhELL6RPJ09UXYAsbyyFZasALAiwuCXyyt fRblQ4pHMTWWK6e7Hrhp93iK9gE1FGtPoQISq9T2GsazzHr8aFavCthFYq03mzRf WOYrq1lZsycJKgu0+7xm9xv4KCCVbJX/wCyVVuuhF4s/sZWRioWDyAhn3tx88sFM 60u5L95y7zVbxlszE7lmq83B5eyX+3llMIDol32r+T7nJhOo45asyAwOJkF5n8n/ UQFJhl16I5KTnklq0IM1lol5oDjI9qt+wcqolfUD0FWL7Z5IYFnCpNpo9/9kW+gc UNbIbHEm1fOW7bWbpD9KtzLraRLzRS/H9EeVMRr/DRKlna79RYnhi/ErntJrg2cD CzaGRq4y+f7ZkyUmArHio6SpifiQeYUgAhwsP6MH9hxNFleoIDa+Xdp4u4Li8RcM yM8lNRPLw+mo2fultaA8iYRLVWcul/GbJajUbKEwZh0bV/pVAqPU40U5YuAiEnUc qBtkr4U+Lms008/vnc01 =4seS -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
