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by Weiqi Gao.
Original Post: QEMU: Just How Fast Is It?
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I last blogged about my experience with QEMU 71 days ago.
Since then I have brought up several other operating systems on it, including NT 4.0, Windows 2000 and FreeBSD 6.0. One thing I noticed is that the newer OSes has more demand on the system and therefore behaves more sluggishly, to the point of not being very useful.
My latest adventure with QEMU is a second try at Ubuntu 6.06 Beta (Dapper Drake).
Maybe it's because I have experienced Ubuntu once before, or maybe it's because Ubuntu 6.06 Beta is really that much better than 5.10, or maybe it's because I'm getting a little bit impatient with Fedora Core 5's degradations, my impression of Ubuntu has improved, even though it's running very slowly under QEMU.
To measure how much slower the emulated system is compared with the host system, I ran a little bench mark program that I found on the internet. The result can be found in the screenshot below:
The bench mark index is 294.0 on the host OS and 56.0 on the guest OS. So the guest is running at 19% of the speed of the host system, making my AMD64 3500+ look like a P3/700MHz.