Re: [Xen-users] Guest disk (LVM on SSD) too slow. Xen unstable, DomU-win XP sp2

[Jeff Sturm <jeff.sturm@xxxxxxxxxx>]

> From: xen-users-bounces@xxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxx] On Behalf Of biwebco.com
> Sent: Friday, August 03, 2012 9:34 AM
>
> my DomU has very slow Disk performance, despite the usage of SSD's. Maybe 
> somebody can give some good tips to accelerate, or point out my mistakes.

[cut]

> in DomU, Windows detected IDE-Controller: Intel 
> 82371SB-PCI-Bus-Master-IDE-Controller
> HDD detected: QEMU HARDDISK (disabling write cache don't work, after reboot 
> it will be automatically activated back)

Emulated (QEMU) disks are slow.  You need PV drivers.

http://wiki.xen.org/wiki/Xen_Windows_GplPv

-Jeff

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