00000003 TraceResponse W TUNE0214W:The session cache for xxx.war is smaller than the average number of live sessions . Increasing the session cache size to at least 3400.0 may improve performance.
Additional explanatory data follows.
Session cache size (the maxium in memory session count):3,000.
current live sessions:5,000.
Average live sessions over the last sampling interval:3,400.
This alert has been issued 1 time(s) in a row. the threshold will be updated to reduce the overhead of the analysis.
是什么原因引起的?如何消除?