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| From: | Jonas Maebe |
| Subject: | Re: [Qemu-devel] [patch] option -no-tsc for i386 with speedstep |
| Date: | Mon, 25 Apr 2005 22:24:45 +0200 |
On 25 Apr 2005, at 22:17, Massimo Dal Zotto wrote:
In the meantime until we find a better solution could you give us some explanation on why using a microseconds clock from gettimeofday instead of rdtsc the guest os clock runs always 20% slower?
Because a system call (which gettimeofday is) is very slow (two context switches).
Jonas
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