Save the performance log after the occurrence of errors. For details on the performance operation, see the manuals provided with the OS.

Hint

The OS statistical information can be acquired only when collection of the performance log is started by the OS-dependent performance function in advance.

Extract the following system monitor logs when a J2EE server is running at an interval of 60 seconds. For details about the settings methods, see the manuals provided with the OS.

Table 4-34 System monitor settings

Performance object	Instance	Item name	Description
processor	--	%Processor Time	CPU utilization (total value excluding the threads in non-idle state).
		%Privileged Time	CPU utilization (in kernel mode).
		%User Time	CPU utilization (in user mode).
memory	--	Cache Bytes	Number of bytes used currently by the file system cache.
		Cache Faults/sec	Frequency of fetching from different memory location or from the disk per second.
		Page Faults/sec	Number of page faults per second.
		Transition Faults/sec	Number of faults per second.
process	_Total	Handle Count	Total number of handles currently opened.
		Page Faults/sec	Occurrence rate of page faults.
		Private Bytes	Used memory (bytes).
		Virtual Bytes	Used virtual memory (bytes).
		Working Set Bytes	Used actual memory (bytes).
	cjstartsv	%Processor Time	CPU utilization (total value excluding the threads in non-idle state).
		%Privileged Time	CPU utilization (in kernel mode).
		%User Time	CPU utilization (in user mode).
		Page Faults/sec	Occurrence rate of page faults.
		Thread Count	Thread count.
		Private Bytes	Used memory (bytes).
		Virtual Bytes	Used virtual memory (bytes).
		Working Set Bytes	Used actual memory (bytes).

Legend:

--: Not applicable