Marcelo Tosatti [off-list ref] writes:

On 25 Jun 2001, John Fremlin wrote:

quoted

Last year I had the idea of tracing the memory accesses of the system
to improve the VM - the traces could be used to test algorithms in
userspace. The difficulty is of course making all memory accesses
fault without destroying system performance.

[...]

Linux Trace Toolkit (http://www.opersys.com/LTT) does that. 

I dld the ltt-usenix paper and skim read it. It didn't seem to talk
about page faults much. Where should I look?

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