Greetings. I am hoping someone can give me a helping hand with my query.
I a webserver running: Windows 2000 Server Tomcat 5.0.25 Apache 2.0.49 Mod_jk2 J2SDK 1.4.2_01 The server hosts about 80 websites (via name based virtualhosts) with Apache in front of TC for the SSL and static serving. The machine is a quad Xeon (2.4Ghz) Dell PowerEdge with 1GB of RAM. Tomcat currently has 704MB assigned as the max heap size. The problem I am having is that the mahine runs out of memory every day or so, and Tomcat has to be restarted. This is clearly not a good thing! Now, the load on the server is average - nothing spectacular - although some of the sites do get 50 000+ hits per day. The sites use JDBC to a MS SQL 2000 server - the SQL Server is on a differnet machine (similar spec to the web server) on the same 100mb LAN. 40 of the sites are management sites - i.e. thet allow users to manage content (for the other 40 sites hosted) - the management functions include image uploading (using commons-fileupload) document uploading, image manipulation (very limited) etc etc. Each public site (40 in total) are also accessed once every 5 minutes (the index page currently) by a product called Servers Alive to ensure the site is up - if not SMS alerts etc. I am changing that so that SA will access a servlet whch returns plain text (thus less load). I have set the server to use the -XX:+UseParallelGC JVM setting. I have increased the number of maxThreads in both Apache and Tomcat to Apaches (1920) I have run 3 differnet profilers on the server - and cannot for the life of me find a memory leak anywhere. I have NOT tried to use the fork compile setting in Tomcat (read somewhere that this is not good in production?) Is my memory too low? I have just ordered additional RAM (upto 2GB and will assign 1.5GB to Tomcat). Are there other settings I am missing? Is the Garbage collector causing the trouble? I know that this is very subjective situation but I am going completely mad! I appreciate any feedback and suggestions! Best regards, Carl Olivier --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
