-- We're currently using Solaris2.6+Stronghold+ApacheJServ+GNUJSP to handle a large e-commerce portal site, and we're currently getting abysmal performance, especially under JDK 1.1.6 (We can't switch to JDK 1.2 yet, which we know will be much faster, because the Oracle drivers don't work with 1.2 - they tell us they will be available "in a few weeks"). At this point, it takes the JVM about 1/3 CPU second to process a transaction which updates the database. We need to get that down to about 1/100th of a second. We've been attempting to profile JServ using OptimizeIt; This program reports that 1043 StringBuffer objects are being created for each HTTP request (this test was done with a blank page). Some of those StringBuffers are being created in our application, and some are created by the JSP engine. However, it appears that a lot of the StringBuffers are being created by JServ as it attempts to process all of the environment variables and headers. This takes a lot of time, especially considering that StringBuffer methods are mostly all synchronized. This is especially a problem under Stronghold, which seems to create about fifty SSL-related environment variables. I've been thinking that one way to improve overall JServ performance would be to filter out headers and environment variables that aren't being used by the servlets. Since there's no way to tell which headers would be needed for a given application, a new configuration directive would be needed. I would suggest something like this: ApJServExcludeEnvMatch "SSL" Each occurrence of the above directive would add a regex to mod_jserv which would eliminate all environment variables matching the regex. -- -------------------------------------------------------------- To subscribe: [EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] READ THE FAQ!!!! <http://java.apache.org/faq/> Archives and Other: <http://java.apache.org/main/mail.html/> Problems?: [EMAIL PROTECTED]
