Does anyone have any input on the impact of various JVM settings? Some of our professional services folks have offered up some of their opinions but I can¹t really judge if they are correct. Here are the recommendations some of our folks have been implementing.
-server -ms1400M -mx1400M -XX:+PrintGCDetails -XX:+UseCMSCompactAtFullCollection -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSParallelRemarkEnabled -XX:+AggressiveHeap -XX:NewSize=100m -XX:MaxNewSize=100m -XX:MaxPermSize=128m Questions: * For a long running WO app that utilizes EO¹s which of the heaps would be best to adjust? * Are there any ³rules of thumb² regarding sizing versus performance and garbage collection for WO/EOF based apps? I have not done enough investigation to know the affects of larger/smaller NewSize, or the use of changing survivor ratio¹s and messing with how the objects move towards the tenured generations as I would think the cached EO objects might be promoted to live there. Any thoughts would be greatly appreciated. Thanks in advance Dov Rosenberg
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