> > On Mar 29, 2009, at 10:29 AM, Avi Kivity wrote: > >> Kurt Yoder wrote: <snip> >> >> Can you loading kvm_amd on this host with 'modprobe kvm-amd npt=0'? > > So that's most likely the problem for me: > > me@host:/etc/nagios/nrpe_directives$ sudo modprobe kvm-amd npt=0 > FATAL: Error inserting kvm_amd (/lib/modules/2.6.27-11-server/kernel/ > arch/x86/kvm/kvm-amd.ko): Operation not supported > me@host:/etc/nagios/nrpe_directives$ uname -a > Linux boron 2.6.27-11-server #1 SMP Thu Jan 29 20:13:12 UTC 2009 > x86_64 GNU/Linux > > > It looks like I need to enable SVM in my BIOS. I'll do that and report > back on the results. The AMD virtualization option was disabled in my BIOS. Once I enabled it, all my problems disappeared: me@guest:~$ sudo hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 846 MB in 3.00 seconds = 281.73 MB/sec me@guest:~$ sudo dd if=/dev/zero of=/tmp/bigfile count=1000000 1000000+0 records in 1000000+0 records out 512000000 bytes (512 MB) copied, 3.84358 s, 133 MB/s I do recall seeing a warning at boot about an error loading kvm-amd, but it was not onscreen for long. It was something like "error loading module kvm-amd"; looking back now, I see in the syslog "kvm: disabled by bios". Perhaps a warning about slow IO should be issued/logged on AMD hosts every time KVM is brought up without the benefit of the kvm-amd kernel module? Anyway, I'm happy now. Thanks Avi for your help. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
