Hi, I'm seeing fairly high vm-exit latencies (300-400 us) during and only during qemu/kvm startup and shutdown on a Core2 T5500 in 32-bit mode. It's most probably while the VM runs inside bios code. During the rest of the time, while some Linux guest is running, the exit latencies are within microseconds, thus perfectly fine for the real-time scenarios I have in mind.
Has anyone some idea what goes on there? As those hundreds of micros precisely frame the assembly block in vmx_vcpu_run, I wonder what guest code could cause such long delays. A quick glance at the bochs bios code did not enlighten me yet. Thanks, Jan
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