Hi all:
I use Charito to test xen default network(pcnet), and ne2000 performance,
to my surpise, the average throughput of the default is 40Mbps, but the
average throughput of ne2000 is 18Mbps, how can this happen?
Besides, I see from xen wiki that : "The default network card which
QEMU
uses in Vt-x is AMD PCnet-PCI II Ethernet Controller. (*file
tools/ioemu/hw/pcnet.c*). The reason to prefer this nic emulation to the
other alternative, ne2000, is that pcnet uses DMA whereas ne2000 does not.
"
But from ne2000.c, I think ne2000 use DMA too.
Is there anyone who can explain this?
Thank you
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