Re: [Patch 0/5] I/O statistics through request queues

[Phillip Susi]

Martin Peschke wrote:
> Well, the instrumentation "on demand" aspect is half of the truth.
> A probe inserted through kprobes impacts performance more than static
> instrumentation.

True, but given that there are going to be a number of things you might 
want to instrument at some point, and that at any given time you might 
only be interested in a few of those, it likely will be better overall 
to spend some more time only on the few than less time on the many.


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