Hi,
I have a production ASE server using 30 CPU's that's is "freezing" several times in the last week (requiring an machine reboot) and from the last sysmon taken we see that the first 4 cpu are 100% with IO 0%.
Engine Busy Utilization CPU Busy I/O Busy Idle
------------------------ -------- -------- --------
Engine 0 100.0 % 0.0 % 0.0 %
Engine 1 100.0 % 0.0 % 0.0 %
Engine 2 100.0 % 0.0 % 0.0 %
Engine 3 100.0 % 0.0 % 0.0 %
Engine 4 100.0 % 0.0 % 0.0 %
Engine 5 44.5 % 19.7 % 35.8 %
Engine 6 62.4 % 24.7 % 12.9 %
...
From SysWaits we see that event 29 (waiting for regular buffer read to complete) is high when we experience this problem.
No change was reported and the users and saying the system to be in the overall slower in the last weeks.
The version is the old 12.5.4 with the latest patch available and the OS is HP-UX.The machine has 256Gb of memory.
As anyone experienced a behavior like this?
Thanks
