|Subject:||[Qemu-devel] Re: Performance Monitoring|
|Date:||Wed, 21 May 2008 11:10:58 -0500|
|User-agent:||Thunderbird 220.127.116.11 (X11/20080505)|
Cheif Jones wrote:
I'm doing a research project in which i want to run an OS under an emulator for a period of time and get full CPU opcode statistics (how many times every opcode was executed). As far as i understand the Qemu design, it is doing "JIT" translation of terget opcode to host opcodes to improve performance, and so there is no easy way to count target opcodes (e.g a loop is compiled JIT and runs natively).
Is an actual emulator necessary, or could you use something like an instrumented UML kernel? I'd think that would be a much simpler approach.
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