All of lore.kernel.org
 help / color / mirror / Atom feed
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4D04B645.3010100@brakkee.org \
    --to=erik@brakkee.org \
    --cc=kvm@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.