VM reference trace

[Zou Min <zoum@comp.nus.edu.sg>]

Hi,

I am working on a problem which requires to get D: the number of distinct 
pages (from user files or dynamically allocated or used by the kernel, ...)
used by the kernel+user processes in a workload.

One way I thought of is to firstly generate a reference trace, i.e. a sequence
of virtual memory addresses accessed by the workload, and then count the
the number of distinct addresses in the trace. (assuming the addresses are 
page addresses).

In fact, I have found a library to do that, but it can only trace single
process in userland. And I have to modify, re-compile and re-link the program 
which I want to trace. That's a bit tedious.

So, I want to ask if there are any better utilities to generate the trace,
or any way to get the number D directly.

Thanks in advance!

-- 
regards,

ZM 

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