[Qemu-devel] How to measure guest instruction count ?

[Qemu-devel] How to measure guest instruction count ?

[Jeff Yu]

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Hi all,

I am new to qemu.
Recently, I was trying to measure the performance(MIPS) of qemu executing
splash2 benchmark.
At first, I am trying the -icount flag built in qemu, but with the limited
user manual.
I also read the post on Qemu-devel Precise guest instruction
count.<http://lists.gnu.org/archive/html/qemu-devel/2009-03/msg00498.html>
I can not understand how it works very well.
Can anyone explain to me how to get the instruction count number by the
-icount feature?

Also, in order to get an accurate performance,  I need to skip the
instructions during boot up process.
I want to only calculate the instruction count of executing the splash2
benchmark.
Can anyone give me some hint where can I start with?

If I am not clear enough, please let me know.
Thanks in advance for any reply.

Jeff Yu

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