That seems to churn the garbage collector like mad. Before: http://s3.amazonaws.com/four.livejournal/20090529/timeseries6.png After: http://s3.amazonaws.com/four.livejournal/20090529/timeseries11.png Got a nice tight side profile for this benchmark now: http://s3.amazonaws.com/four.livejournal/20090529/hist10.png
The error codes still remain for the two general file system operations: rename and stat. Additionally I've removed the actionQueue for file system operations. They are sent directly into the thread pool.