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timing pageins and pageouts on the mac

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timing pageins and pageouts on the mac

Subject: timing pageins and pageouts on the mac
From: Joel Reymont <email@hidden>
Date: Fri, 2 Oct 2009 18:24:07 +0100

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 see the vminfo provider with a bunch of probes (below) but how do I use it?

I'm assuming that the probes below return kernel memory addresses. Should I use mmap probe from the syscall or fbt provider to get hold of kernel memory addresses?

	Thanks, Joel

--- 19018 vminfo mach_kernel vnode_pagein pgpgin 19030 vminfo mach_kernel vm_page_activate pgfrec 19031 vminfo mach_kernel vm_page_activate pgrec 19033 vminfo mach_kernel vm_pageout swapout 19034 vminfo mach_kernel vm_pageout swapin 19035 vminfo mach_kernel vm_pageout pgswapout 19036 vminfo mach_kernel vm_pageout pgswapin 19037 vminfo mach_kernel vm_pageout execpgout 19038 vminfo mach_kernel vm_pageout execpgin 19039 vminfo mach_kernel vm_pageout execfree 19041 vminfo mach_kernel vm_pageout_continue pgrrun 19049 vminfo mach_kernel vm_fault_page fspgin 19050 vminfo mach_kernel vm_fault_page anonpgin 19051 vminfo mach_kernel vm_fault_page maj_fault 19052 vminfo mach_kernel vm_fault_page pgin 19057 vminfo mach_kernel vm_pageout_scan fsfree 19058 vminfo mach_kernel vm_pageout_scan anonfree 19059 vminfo mach_kernel vm_pageout_scan dfree 19062 vminfo mach_kernel vm_fault_page cow_fault 19063 vminfo mach_kernel vm_pageout_scan scan 19070 vminfo mach_kernel vm_pageout_scan rev

---
fastest mac firefox!
http://wagerlabs.com


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