Tomcat startup time

Guest · Post by **Guest** » Wed Jul 27, 2005 9:08 am

I have just installed jzos (it's great

) and the latest stable tomcat release 5.0.30.
INFO: Initialization processed in 12284 ms
INFO: Server startup in 63414 ms

using IJO="-Xms128m -Xmx256m -Xinitsh2m -verbose:gc"
and build cm142sr1a-20050209

z/OS 1.4, z990, 2 CP online

Has anyone a faster startup time ?

DJ · Post by DJ » Wed Jul 27, 2005 9:26 am

And with java build cm131s-20040406a
[INFO] Catalina - Initialization processed in 13971 ms
[INFO] Catalina - Server startup in 42862 ms

Also cpu usage is with J1.3 better (only 14 secs), compared to J1.4 with 21.6 cpu secs

DJ · Post by DJ » Wed Jul 27, 2005 10:29 am

Mouting the HFS on the right system will improve startup ...

Here again my startup times:

J1.3

[INFO] Catalina - Initialization processed in 3415 ms
[INFO] Catalina - Server startup in 10342 ms

J1.4
INFO: Initialization processed in 5634 ms
INFO: Server startup in 19001 ms

Post by **dovetail** » Wed Jul 27, 2005 1:22 pm

You may be able to improve Tomcat startup times by removing stuff that you don't need from conf/server.xml.

As an alternative to Tomcat, you might try Jetty. For me, it starts at least twice as fast as Tomcat. There are instructions at http://jzos.com/docs/jetty.html for setting it up under JZOS.

SDK 1.4 does take longer to start than 1.3, but has anyone done any performance benchmarks between the two under Tomcat? I would expect 1.4 to run a little better overall.