On 1 socket PL server, ( firmware AL..95, installed on VIO/IVM, 3 Lpar's , Redhat 6.3 , 27G of dedicated RAM, 1/3/4 CPU, running websphere 7.x ) we are having issues.
First of all, the the average output of systat packages ( mpstat,iostat,vmstat) are not as is supposed to be.
Eventhough one of the threads are busy, (11 are free) the average output is 100% usr, so the sar output is always > 90% , because the average parameter is wrong.
Also when the load on the server decreases, and the entitled cpu drops 0.1 and below, the ping latency of the server jumps to 300-1000 ms, when the load increases, the ping latency is ok again.
Is there a fix, workaround for this?