On 04/11/2010 20:01, Marc Wilmots wrote: > Honestly....no, I didn't. > The mod_jk scared the hell out of me....wouldn't you? :-) > > "Using this option will have a strong performance penalty for Apache and > Tomcat. Use this only as a last resort in case of unfixable network > problems."
Experience has shown that the impact is usually (YMMV) a lot less significant than that. You're right - we should update the docs. Mark > > I'll give it a try tomorrow and see what it gives. > > By the way, my last calculation about connection_pool_size was wrong. I > forgot to include the second Apache server. The math would look like this > then: > > Apache1 -> 10 server processes x 15 x 4 (tomcats) = 600 > Apache2 -> 10 server processes x 15 x 4 (tomcats) = 600, which makes 1200 in > total > > Each Tomcat would receive a maximum of 300 connections, which would leave > 100 free connections per Tomcat. This would solve the problem that Tomcat > runs out of connections. The thing is...not all of my available Apache > connections can be used: > > Apache has 60 threads per server process (10) -> 600 connections. > connection_pool_size per server process: 15. This would mean only 15 of 60 > possible connections per server process can actually establish a connection > to Tomcat. > > In order to be able to server all Apache connections simultaneously, I would > need 4 more Tomcats? > > > > > > > 2010/11/5 Mark Thomas <ma...@apache.org> > >> On 04/11/2010 19:27, Marc Wilmots wrote: >>> The best solution would be to enable DisableReuse as Mark stated, >> although >>> I'm afraid that would be too big of a performance hit. >> >> Have you tried it? >> >> The cost of the required CPING/CPONG isn't that different to the cost of >> creating a TCP/IP connection. On a fast local area network I doubt you'd >> notice it. The time taken to establish a TCP/IP connection is usually >> (YMMV so test it) << the time taken to process a request. >> >> Mark >> >> >> >> --------------------------------------------------------------------- >> 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
