We have host-machine running Debian 6 (kernel 2.6.32-5-xen-amd64 ) with Xen
4.0 on it
there is mdadm-raid 10 and LVM on top of it that are use by Xen virtual
machine
On host system disk write speed test with dd shows 86,7 MB/s
On Xen we have virutual machine with Win2008R2
PV drivers are installed
So on this Win2008R2-system disk write speed test (performed with hdtune)
shows 4 MB/s
And in short disk read perfomance comparing host to guest systems is
reduced for about 10 times.
Can anybody please explain why disk write/read speed is reduced so much
with Xen?
Installes Packages:
mdadm 3.1.4-1+8efb9d1+squeeze1
lvm2 2.02.66-5
libxenstore3.0 4.0.1-4
linux-image-2.6.32-5-xen-amd64 2.6.32-48squeeze3
xen-hypervisor-4.0-amd64 4.0.1-4
xen-linux-system-2.6-xen-amd64 2.6.32+29
xen-linux-system-2.6.32-5-xen-amd64 2.6.32-48squeeze3
xen-qemu-dm-4.0 4.0.1-2
xen-tools 4.2-1
xen-utils-4.0 4.0.1-4
xen-utils-common 4.0.0-1.1
xenstore-utils 4.0.1-4
--
*С уважением, Милитенко АлександрСистемный администраторТел.: +7 (812)
318-02-45*
*E-mail: militenko_aa@megateks.net <militenko_aa@megateks.net>*
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