Re: [CentOS-virt] Bad Disk Performance of domU

----- "Francisco Pérez" fperez.x@gmail.com wrote:

OK, here it is:

name = "vm01" uuid = "2fa05fe5-9b52-3527-5bf5-efb88555c567" maxmem = 5836 memory = 5836 vcpus = 1 bootloader = "/usr/bin/pygrub" on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" vfb = [ ] disk = [ "tap:aio:/var/lib/xen/images/vm01.img,xvda,w" ] vif = [ "mac=00:16:3e:15:6f:cd,bridge=xenbr0" ]

Thanks.

What kind of "disk performance"? Read? Write? Random? Linear?

As for general tuning, use block devices (LVM) unless you have to do otherwise. Do you do a large amount of I/O in general? Do you have dom0's CPU pinned to an unshared core?