Provided you have more than 1 CPU, I found that these command line > options help throughput immensely > > -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -Xincgc > >
I ran a couple of tests on my quad-core with 6Gb of RAM. The test was a brute force optimization job. Here are the results: 1. No VM options: 220 seconds 2. -XX:+AggressiveHeap (as in JBT startup script): 216 seconds 3. -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -Xincgc: 222 seconds All three are within the margin of error. The thing is, the garbage collector is probably smart enough to figure out that I have so much RAM that there is never a need for it to suspend running processes for garbage collection. There was a much greater variability in results when I was running on my older machine with 2Gb of RAM. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "JBookTrader" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/jbooktrader?hl=en -~----------~----~----~----~------~----~------~--~---
