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RE: [Qemu-devel] Performance Monitoring


From: Stanislav Shwartsman
Subject: RE: [Qemu-devel] Performance Monitoring
Date: Wed, 21 May 2008 00:44:57 +0200

Hello,

 

I think it is better to use Bochs for such purpose …

 

Stanislav

 

From: address@hidden [mailto:address@hidden On Behalf Of Cheif Jones
Sent: Tuesday, May 20, 2008 8:56 PM
To: address@hidden
Subject: [Qemu-devel] Performance Monitoring

 

Hi All,

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 it possible to disable Qemu's JIT capabilities and get target opcode statistics?

Cheif


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