Hi, >Perhaps catalina can improve my service performance. Nope,...Can't tell yet...Never tried in production...Tomcat 4.0 is still too new.
A few simple rule, that you to need observed for performance: 1)Tomcat alone as compare to hookup with web server like IIS / Apache. 2)Database Connection Pool in with JNDI in Tomcat. 3)Reduce Database access whenever possible. >creation when I have many concurrent accesses. That is so true...When run in Session mode, SOAP does create service objects for each session. However, it is still far lesser compare to scope="Request" or session without client code like: Call call1 = new Call (); Call call2 = new Call (); ... SOAPHTTPConnection shc = new SOAPHTTPConnection (); shc.setMaintainSession (false); call1.setSOAPTransport (shc); call2.setSOAPTransport (shc); If you dun do this, the session object will create a session objects with each call. If you do.. calling both of the above call1 & call2 will only create one session object. There are ways to get around this problem without much programming: 1)Switch JDK... Like from Sun's JDK to IBM...I am not too sure IBM JDK 1.3 will be able 2)Tune the OS Virtual Memory swap/paging file. Like Make the Swapfile take up an entire partition alone..Usually works best in FAT32 rather than NTFS, since you dun need to keep data there. 3)Switch OS like from Win2K to RedHat 7.1 If you are using Win2K for production... you are out of luck..Usually Windows uses paging file even there are plenty of physical RAM left. You usually see/hear the harddisk spinning like nothing. If you use RedHat Linux 7.1 with kernel 2.4+, the swap/paging partition is used ONLY when you dun have any physical RAM left. Further more, accessing paging file in Win2K require to lock the common Master File Table used by other program in the drive. This is not the case with Linux... as it uses entire special swap partitions, the kernel doesn't need to lock/unlock. No program will have a race for that partition. Hope this help cheers, Boon Pang At 12:23 PM 10/2/2001 +0100, you wrote: >Thanks for your extensive help. I'm sure I missed something on installation. >Surely the service and context in server.xml. >By the way, did you notice any major performance enhancements? My service is >run in session mode, so i figure my major bottleneck is the constant object >creation when I have many concurrent accesses. >Perhaps catalina can improve my service performance. > >Best Regards, > >Ivo Conde e Silva >Technical Department > > >Taguspark - Edif. Inovação IV, nº 721 >Porto Salvo >2780-920 Oeiras - Portugal >E-mail: [EMAIL PROTECTED] >Tel.: (+351) 214 220 660 >Fax: (+351) 214 220 669 >Tlm: (+351) 91 8742703
