On Tue, 2006-05-23 at 13:31 +0100, Stephen C. Tweedie wrote:
File-backed guest: dom0 hdparm -t: 85.7138 MB/sec domU hdparm -t: 75.2901 MB/sec
That was rawhide; I get similar performance from current FC5:
domU hdparm -t: 77.99 MB/sec
and identical results testing the raw disk rate with lmdd.
Bleah.. didn't CC the list:
Mine:
DBD - 5G LVM partition on a 7200RPM IDE 200G: [root@xm-fc5-001 ~]# dd if=/dev/zero of=/home/foo bs=4k count=25000 25000+0 records in 25000+0 records out 102400000 bytes (102 MB) copied, 2.06112 seconds, 49.7 MB/s
DBD - 120G dedicated disk 7200RPM IDE (phy device set as xvdb) [root@xm-fc5-001 ~]# dd if=/dev/zero of=/export/foo bs=4k count=25000 25000+0 records in 25000+0 records out 102400000 bytes (102 MB) copied, 0.719008 seconds, 142 MB/s
hdparm returns similar results. The first physical device is shared with four other DomU's.