basho/leveldb — pull request #4 by matthewvon (2012-05-19 13:56:40+00:00)
Title: Add multiple compaction threads with different task priorities.  Also mo...

...ve file close and unmap operations to background threads. This update ends almost all stalls (subsequent cache checkin fixes low file handle stalls). This can slow down throughput due to compactions happening as scheduled (subsequent file sizing addresses throughput).