Re: [PATCH] Performance Stats: Kernel patch

Hi!

Patch makes available to the user the following
task and process performance statistics:
	* Involuntary Context Switches (task_struct->nivcsw)
	* Voluntary Context Switches (task_struct->nvcsw)
	* Number of system calls (added new counter
	  thread_info->sysall_count)
	           
Statistics information is available from:
        1. taskstats interface (Documentation/accounting/)
	2. /proc/PID/status (task only).

This data is useful for detecting hyperactivity
patterns between processes.

I was told nvcsw is standard name, but given how other fields are
named ("syscall_counter") I think we should use some more reasonable
name (like "voluntary_ctxt_switches" or something).
								Pavel

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