Here is more additional information. It looks like my guess might be correct. When I repeated the same exact tests on a PIII 450mhz, win2K, 512mb RAM with the following heap settings "-Xms50m -Xmx280m" Httpconnector out performs the other system with a faster processor using coyote.
One obvious difference is with 512mb of RAM, it never hits the disk cache. In fact, it never uses it at all. Even with 64 concurrent connections. My guess is the combination of disk cache and limited memory caused two separate things to occur. 1. disk cache was being used, therefore immediately performance started degrading. 2. with less memory the heap size was smaller, there by causing GC to start at a lower threshold. This is probably why CPU usage increased so rapidly. With the large heap setting, the CPU usage is more normal and doesn't fluctuate wildly for most of the tests. Both conditions together cause the sharp performance degredation. Once I run these tests again with JProbe, I will know for sure if that is the cause. Peter Lin __________________________________________________ Do You Yahoo!? Yahoo! Movies - coverage of the 74th Academy Awards® http://movies.yahoo.com/ -- To unsubscribe: <mailto:[EMAIL PROTECTED]> For additional commands: <mailto:[EMAIL PROTECTED]> Troubles with the list: <mailto:[EMAIL PROTECTED]>
