> > He's already using a low prepost_timeout of 50ms (IMO is way too low > > and should be set to 250-500ms). > > Sorry, I had only little time and directly ran into our old problem, > that some timeouts are seconds, and some are milliseconds. Your are > right, 50 is way too small, se my new Timeouts docs page :)
Looks good. :-) > > What he should also set is the connect_timeout setting, again, I would > > recommend 500ms or higher. > > Yes, since prepost_timeout is already that small, I would also guess, > that the minute he had to wait happened during connection establishment. > > Unfortunately, the connect_timeout will only help, if the connection can > be established fast (the TCP connection), but then one wants to check, > if Tomcat can answer fast (or maybe one is connected to something other > than Tomcat). > > So in case the remote host is dead (i.e. it's not only Tomcat not > answering or no Tomcat there), we have the problem, that TCP as a > reliable problem tries hard to establish a connection with several > resends of SYNs in increasing intervals, leading to long waiting times. So with connect_timeout set to 500, mod_jk won't give up on the connection attempt after 500 ms have elapsed? > Mostly I agree, but I would set a timeout for athe connection pool. Perhaps the default configuration and docs could be updated to reflect that instead of setting to zero? I normally use these settings on my servers: socket_keepalive=1 socket_timeout=300 connection_pool_timeout=300 connect_timeout=500 prepost_timeout=500 I also normally set the worker maintain and lb worker recover_time to something lower than the default as well so that mod_jk picks up recovering workers more quickly. It would be nice if worker maintenance could be done by a process other than the processes/threads which also process requests! -Dave --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
