[Xen-users] 10MiB/s is normal tap:aio:file.raw ?

[Flako <subforos@xxxxxxxxx>]

Hi there
I am analyzing disk performance. I'm testing raw (tap: aio) and lvm (phy :).
The tests I'm doing on a SLES11SP3, cpu I7, 4GBRam, disco-SATAII 7200rpm.

With phy: lvm achievement 70-80MiB / s (an acceptable value)
With tap: aio: file.raw achievement 5-9MiB / s, which is very low ...

10MiB / s is what you should expect access to a tap: aio: file.raw? or I have something misconfigured?

my cfg is:

name = "satotestx"
maxmem = 1024
memory = 1024
vcpus = 4
bootloader="/usr/bin/pygrub"
boot = "dc"
pae = 0
acpi = 1
apic = 1
hap = 1
viridian = 0
hpet = 0
rtc_timeoffset = 0
localtime = 0
>>> sdl = 0
vnc = 1
vncunused = 1
keymap = "en-us"
disk = [
ÂÂÂÂÂÂÂÂÂ "tap:aio:/mnt/util/Descargas/SystemRescueCdOnSuse-0.0.1/SystemRescueCdOnSuse.x86_64-0.0.1.raw,xvda,w"
ÂÂÂÂÂÂÂÂÂ ,"tap:aio:/mnt/xendomain/satotest/disco1.raw,xvdb,w"
ÂÂÂÂÂÂÂÂÂ ,"phy:/dev/globalNew/satotest,xvdc,w"
ÂÂÂÂÂÂÂ ]
parallel = "none"
serial = "pty"
usb =

Thanks for reading so far down ...

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