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Is Qemu the proper tool for performance Tests ?

From: caner yilmaz
Subject: Is Qemu the proper tool for performance Tests ?
Date: Mon, 20 Jan 2020 16:43:58 +0300

Hello Everyone, 

My team is developing a complex algorithm basically for network path finding and this algorithm will run on an industrial PC in a near real time environment. Target PC will be PLC or some kind of industrial PC. Since response time is crucial for the developed algorithm we have to be running performance tests and taking measurements in terms of response time.

To do that, we are evaluating Qemu instead of instead of using  real hardware. 

My confusion is I read somewhere that Qemu is not cycle accurate, but functionally accurate. 

So, my question is with the right configuration, will Qemu give near results to a real machine, especially in terms of response time ? Or is it just  a tool for emulating the hardware for testing,debugging functionality of a software for a specific target?

Kind Regards,


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