Re: timing pageins and pageouts on the mac
Re: timing pageins and pageouts on the mac
- Subject: Re: timing pageins and pageouts on the mac
- From: Jens Alfke <email@hidden>
- Date: Fri, 2 Oct 2009 11:31:26 -0700
On Oct 2, 2009, at 10:24 AM, Joel Reymont wrote: Firefox uses mmap to map certain files into memory. This memory is then accessed somehow which results in pageins and pageouts. I would like to time the pageins and pageouts and total these up per mmap-ed file.
How can this be done on Leopard?
I think fs_usage will show page-faults related to memory-mapped file I/O, but I'm not certain. The man page is ambiguous. (When I've used fs_usage, I've deliberately suppressed this kind of stuff by using the -f filesys filter...)
—Jens
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