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From: Erik Brakkee <erik@brakkee.org>
To: kvm@vger.kernel.org
Subject: USB Passthrough 1.1 performance problem...
Date: Sun, 12 Dec 2010 12:47:17 +0100	[thread overview]
Message-ID: <4D04B645.3010100@brakkee.org> (raw)

Hi,


I am using a tv card in a VM and get jerky video.As I understand it, the 
VM is using USB 1.1. However, when I set the USB controller in the BIOS 
of my server to Fullspeed (12 Mbit/s) which is the USB 1.1 speed I am 
able to get perfect results on the host but still on the guest the video 
is jerky.

Are there some tuning parameters I can use or perhaps even kernel 
configuration paramters on the host to solve this?

Cheers
   Erik

Host:    Motherboard Supermicro X8DTi-F, Intel Xeon L5630, 12MB
              OS: Opensuse 11.3 64 bit

Guest:   OS: Opensuse 11.3 64 bit

             reply	other threads:[~2010-12-12 11:47 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-12 11:47 Erik Brakkee [this message]
2010-12-12 20:59 ` USB Passthrough 1.1 performance problem Erik Brakkee
2010-12-12 22:16   ` Jan Kiszka
2010-12-12 22:31     ` Erik Brakkee
2010-12-13  8:25       ` Alexander Graf
2010-12-14 10:02         ` Avi Kivity
2010-12-14 10:11           ` Alexander Graf
2010-12-31 17:00           ` Kevin O'Connor
2010-12-13 23:27       ` Jan Kiszka
2010-12-13 23:50       ` Kenni Lund
     [not found]         ` <3047113345.976756218@brakkee.org>
2010-12-14  0:47           ` Kenni Lund
     [not found]             ` <5085473063.976781602@brakkee.org>
2010-12-14 11:55               ` Kenni Lund
2010-12-14 12:05                 ` Daniel P. Berrange
2010-12-14 21:47                   ` Erik Brakkee
2010-12-14 23:44                     ` Kenni Lund
2010-12-16 16:23                       ` Erik Brakkee
2010-12-16 21:46                         ` Erik Brakkee
2010-12-24 18:19                           ` Erik Brakkee
2010-12-13 10:36 ` Gerd Hoffmann

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