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

[Jeff Yu]

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.
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