Re: rtl8139 stop working under high load

[Dor Laor <dor.laor@qumranet.com>]

Farkas Levente wrote:
> hi,
> i'm just switch to the use rtl8139 network emulator in kvm-70 for the 
> guests, but under high load it's simple stop working. a reboot or even a
> service network restart
> solve the problem, but imho there should have to be some bug in the 
> qemu's rtl8139 code. and there is not any kind of error in any log 
> (neither the host's nor the guest's).
> this not happened with e1000. but with e1000 the network sometimes 
> seems to breathing (sometimes slow down and then speed up again).
> do currently which is the preferred network network device in qemu/kvm?
> thanks.
>
I think rtl8139 is the most stable, and afterwards virtio and e1000 
(which both perform much better too).
Maybe it's irq problem. Can you run the same test with -no-kvm-irqchip ?