fine tuning
Hi We migrated to tomcat 5.0.28 from jserv, which is affecting the performance after migration (for the same load as Jserv) Is there any recommended configuration changes/performance tuning documentation ? Any help is really appreciated Thanks, -Krishna
RE: Fine tuning my Apache -Tomcat Server
Srinivas, How about the following? 1. Ensure all loging is at warn level only (remove excessive logging of text) 2. Install compression such as mod_gzip into apache, and configure to compress dynamic content from tomcat 3. Remove language negotiation from Apache (unless you need it) 4. Switch to JDSK1.3 from IBM for linux (good reports from Volano site), and arc up the amount of memory for it - use of native threads can make a difference as well. 5. Ensure HTTP/1.1 KeepAlives are configured 6. Use AJP13 protocol for communication between Apache + Tomcat 7. Check database systems, and other back-end data sources for delaying / causing slowdowns in operation - this is the source of about 80% of problems we have encountered in slow systems. 8. Implement data caching on your app server. 9. Find out which java code is causing the problems (sorry this sounds obvious, but often overlooked) - 90% of a time is spent in 10% of the code. 10. Lots more - but difficult without viewing configuration files, application and method of operation - and there should be a lot that can be added by others on this list. (And actually, it may be better to isolate exactly where it is that it is going slow...) You are only getting one user every 6 seconds, so as long as you can serve a request in that time, you would rarely have any concurrency issues. Be good to hear of advice from others, and their experiences regarding this. There is probably a wealth of information out there regarding this, and a lot of it probably won by many hard slogs. Regards, Andrew -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 08 August 2001 15:12 To: [EMAIL PROTECTED] Subject: Fine tuning my Apache -Tomcat Server Hi, I have Apache and Tomact running on Linux server. The following are the details of the same Apache: Version : Apache_1.3.12-i686 Tomcat: Version: Jakarta-tomcat-3.2.1 Linux: Version :6.2 Java: Version : JDK 1.2.2 Hardware Configuration: Processor : Intel PIII CPU Cycles : 733 M Hz. RAM:256MB Hard Disk : 256 MB Applications : Technology : Java Servlet's Users: 100 users for every 10 minutes (approx) Network : Leased Line Band Width : 2 MegaBytes/Second My Current Problem: There are constant complaints that the server is slow in delivering the response to the users. But all the applications are working fine. Please help me out in fine tuning my Apache -Tomcat Server. Any inputs for improving server performance are highly appreciated. Thanks and Regards Srinivas Chebolu
RE: Fine tuning my Apache -Tomcat Server
Which connector are you using (ajp12 or ajp13). The last one should be a lot faster (ajp12 is frozen anyway). Also turning of unecessary debugging / logging in this area will speed up the process.. Mvgr, Martin -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 08, 2001 4:12 PM To: [EMAIL PROTECTED] Subject: Fine tuning my Apache -Tomcat Server Hi, I have Apache and Tomact running on Linux server. The following are the details of the same Apache: Version : Apache_1.3.12-i686 Tomcat: Version: Jakarta-tomcat-3.2.1 Linux: Version :6.2 Java: Version : JDK 1.2.2 Hardware Configuration: Processor : Intel PIII CPU Cycles : 733 M Hz. RAM:256MB Hard Disk : 256 MB Applications : Technology : Java Servlet's Users: 100 users for every 10 minutes (approx) Network : Leased Line Band Width : 2 MegaBytes/Second My Current Problem: There are constant complaints that the server is slow in delivering the response to the users. But all the applications are working fine. Please help me out in fine tuning my Apache -Tomcat Server. Any inputs for improving server performance are highly appreciated. Thanks and Regards Srinivas Chebolu
RE: Fine tuning my Apache -Tomcat Server
Hemm are you sure for the size of your hard disk? Loïc Lefèvre -Message d'origine- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Envoyé : mercredi 8 août 2001 16:12 À : [EMAIL PROTECTED] Objet : Fine tuning my Apache -Tomcat Server Hi, I have Apache and Tomact running on Linux server. The following are the details of the same Apache: Version : Apache_1.3.12-i686 Tomcat: Version: Jakarta-tomcat-3.2.1 Linux: Version :6.2 Java: Version : JDK 1.2.2 Hardware Configuration: Processor : Intel PIII CPU Cycles : 733 M Hz. RAM:256MB Hard Disk : 256 MB Applications : Technology : Java Servlet's Users: 100 users for every 10 minutes (approx) Network : Leased Line Band Width : 2 MegaBytes/Second My Current Problem: There are constant complaints that the server is slow in delivering the response to the users. But all the applications are working fine. Please help me out in fine tuning my Apache -Tomcat Server. Any inputs for improving server performance are highly appreciated. Thanks and Regards Srinivas Chebolu
Re: Fine tuning my Apache -Tomcat Server
Turn off servlet auto-reloading as well. I would recommend upgrading to 3.2.3, because of security problems and other bug fixes with 3.2.1 and 3.2.2. Just copy the new .jar files from 3.2.3 to your 3.2.1 installation and restart. It's that simple. (It's outlined in the 3.2.3 release notes...) --jeff - Original Message - From: Martin van den Bemt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, August 08, 2001 7:13 AM Subject: RE: Fine tuning my Apache -Tomcat Server Which connector are you using (ajp12 or ajp13). The last one should be a lot faster (ajp12 is frozen anyway). Also turning of unecessary debugging / logging in this area will speed up the process.. Mvgr, Martin -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 08, 2001 4:12 PM To: [EMAIL PROTECTED] Subject: Fine tuning my Apache -Tomcat Server Hi, I have Apache and Tomact running on Linux server. The following are the details of the same Apache: Version : Apache_1.3.12-i686 Tomcat: Version: Jakarta-tomcat-3.2.1 Linux: Version :6.2 Java: Version : JDK 1.2.2 Hardware Configuration: Processor : Intel PIII CPU Cycles : 733 M Hz. RAM:256MB Hard Disk : 256 MB Applications : Technology : Java Servlet's Users: 100 users for every 10 minutes (approx) Network : Leased Line Band Width : 2 MegaBytes/Second My Current Problem: There are constant complaints that the server is slow in delivering the response to the users. But all the applications are working fine. Please help me out in fine tuning my Apache -Tomcat Server. Any inputs for improving server performance are highly appreciated. Thanks and Regards Srinivas Chebolu
