Wes wrote: > Hello List, > > Are there any plans on emulating gigabit under qemu/kvm? > > I ask because at the moment networking in guests on an ibm x3650 host > is embarrassingly slow. Using model=rtl8139 results in max of 12% of > bandwidth utilisation @ 100mbit (which in practice equates to 10mbit > performance), and using the default model=ne2k_pci results in much > faster albeit still sub-100mbit performance (while reporting 10mbit in > the guest). Is this something that can be worked around? Since the > x3650's we use here have 2 gigabit ports, is it possible to pass one > to the guest for direct access instead of being forced to emulate a > nic then route via 8021q and tun/tap? It's weird the rtl gives worse performance than ne2k, it should be the opposite. What kvm version do you test? Try test with the latest (Avi added a small tap performance improvement.) If this does not help try to add the -no-kvm-irqchip flag to the party.
Regarding pci pass through, we have a prototype working which will be release soon (month). Dor. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kvm-devel
