> -----Original Message----- > From: Dor Laor [mailto:[EMAIL PROTECTED] > Sent: Monday, December 01, 2008 5:27 PM > To: Adrian Schmitz > Cc: kvm@vger.kernel.org; Avi Kivity > Subject: Re: STOP error with virtio on KVM-79/2.6.18/Win2k3 x64 guest > > What driver version are you using? Version 2 is obsolete. > I posted ver 3 few months ago, Avi can you please upload it to > sourceforge. > My old public space was blocked so I'll send you a private attachment > to > test. > > Dor.
Okay, I received the version 3 drivers and installed them on my guest. This fixed the STOP errors. I can now run the same iperf tests without any crashes. The only problem I have now is that the virtio seems to be slower for me than e1000. Running iperf between the guest machine and the bridge interface on the host using the e1000 driver consistently gave measurements of around 320 Mb/s. With the new virtio drivers, I'm getting roughly 120 Mb/s. I'm not sure if I'm missing something simple. I tried changing the connection rate setting in the guest from the default 100M to 1G, but that didn't seem to help. I also tried using a tcp window size of 16k instead of the guest os default 8k, but that didn't make much of a difference, either. Below is some information about my setup. Please let me know if there's any other info I can provide, and thanks again for your help. Host Dist: CentOS 5.2 Host Kernel: 2.6.18 Host Hardware: Dual AMD Quad-Core, 8G memory KVM Version: 79 (modules and tools built and installed from source) Guest OS: Windows 2003 Server x64 SP2 (with all critical updates) Guest VCPUs: 2 Guest memory: 4G KVM command used: /usr/bin/kvm -S -M pc -m 4096 -smp 2 -name bth-host00 -uuid 84d941a5-126e-d001-6029-d7d434a7dad6 -monitor pty -localtime -boot c -drive file=/dev/mapper/sys_bth-host00,if=ide,index=0,boot=on -drive file=/isoimages/netkvm.iso,if=ide,media=cdrom,index=2 -net nic,macaddr=00:16:3e:5d:a7:46,vlan=0,model=virtio -net tap,fd=19,script=,vlan=0,ifname=vnet1 -serial none -parallel none -usb -usbdevice tablet -vnc 127.0.0.1:1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
