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Re: feedback from google
Hi,
On Fri, 2005-05-13 at 17:53, Chen, Brad wrote:
> He suggested a couple examples off the top
> of his head of things we'd want to monitor that pushed
> well above the 1KHz event frequency range:
> - context switches. Just moving the mouse around on
> the desktop can generate context switches at over 2KHz.
Another one --- IO. You can achieve typically in excess of 100 IOs/sec
on most disks; and a big server may have dozens of disks. And you
probably want several probes for each IO --- possibly one in the VFS,
one when the IO hits a driver, one on IO completion, etc. You'll hit
1KHz *very* easily once you start down that path.
--Stephen