From: Til Obes <til@obes.name>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Performance of USB2.0
Date: Mon, 31 Oct 2011 10:27:50 +0100 [thread overview]
Message-ID: <4EAE6A16.60303@obes.name> (raw)
Hello all,
i want to use a virtual router which is connected to a cable box
via an usb ethernet controller. The device itself runs properly
at normal usage. But inside the virtual machine i get only about 7MBit.
I configured the the usb device with the following xml syntax of
libvirt:
<controller type='usb' index='0' model='ehci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07'
function='0x0'/>
</controller>
<hostdev mode='subsystem' type='usb' managed='no'>
<source>
<vendor id='0x9710'/>
<product id='0x7830'/>
</source>
</hostdev>
Inside the guest i get this output of lsusb:
Bus 001 Device 002: ID 9710:7830 MosChip Semiconductor MCS7830 10/100
Mbps Ethernet adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsusb -v shows this output for the root hub:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.32-5-amd64 ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:00:07.0
Does this "Full speed" mean, that it is still running with 12MBit?
What is the status of High Speed USB (480Mbit) inside the guest?
What versions do i need? I currently use Debian Sid:
qemu-kvm (0.15.1)
libvirt0-dbg (0.9.6-2)
Kernel: Linux server 3.0.0-2-amd64 #1 SMP x86_64 GNU/Linux
Regards Til
next reply other threads:[~2011-10-31 9:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-31 9:27 Til Obes [this message]
2011-10-31 12:46 ` [Qemu-devel] Performance of USB2.0 Hans de Goede
2011-10-31 13:37 ` Til Obes
2011-10-31 15:22 ` Hans de Goede
2011-11-01 9:37 ` Gerd Hoffmann
2011-11-01 13:42 ` Til Obes
2012-01-05 16:29 ` Til Obes
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