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[Qemu-devel] guest host time synchronization

From: Jiahuan Zhang
Subject: [Qemu-devel] guest host time synchronization
Date: Tue, 11 Apr 2017 09:01:40 +0200

Dear QEMU developers,

I made a test to check the time difference of QEMU emulated ARM-based Linux
guest and the Windows host. The result is, the guest time is around 0.2
second faster than the host. I used the "-rtc base" option.

So can I say that, the time precision of QEMU emulation is in seconds? Is
it possible to make it more precise? because I need to test the latency of
my guest/host communication with high time resolution, at least in

Please let me know if you have any method  for the communication
performance testing. Thank you very much.

Best regards,

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