----- "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?
I guess the bad performance it goes with the writing. For example on decompression of a big tar.gz, installing rpm packages. Also on restoring a MySQL Database...
The first clue when i knew that something were wrong was on the FS formating stage. It took really long time to format 40 GB to ext3. I did the same on other machine with a sata disk... surprise! same software and hardware config except for the inferior disk type and did it in no time.
Regards Francisco.
2009/5/19 Christopher G. Stach II cgs@ldsys.net
----- "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?
-- Christopher G. Stach II
CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
-
Christopher G. Stach II -
Francisco Pérez