Re: USB Passthrough 1.1 performance problem...

2010-12-31 Thread Kevin O'Connor
On Tue, Dec 14, 2010 at 12:02:03PM +0200, Avi Kivity wrote: That could certainly be optimized. If the BAR is all along in its page, both on guest and host (if not, we can migrate it, at least on the host), we can use the same offset within the page on the host as it appears on the guest, and

Re: USB Passthrough 1.1 performance problem...

2010-12-24 Thread Erik Brakkee
Erik Brakkee wrote: Erik Brakkee wrote: quote who=Kenni Lund 2010/12/14 Erik Brakkeee...@brakkee.org: Daniel P. Berrange wrote: On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk 2010/12/14 Erik

Re: USB Passthrough 1.1 performance problem...

2010-12-16 Thread Erik Brakkee
quote who=Kenni Lund 2010/12/14 Erik Brakkee e...@brakkee.org: Daniel P. Berrange wrote: On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni

Re: USB Passthrough 1.1 performance problem...

2010-12-16 Thread Erik Brakkee
Erik Brakkee wrote: quote who=Kenni Lund 2010/12/14 Erik Brakkeee...@brakkee.org: Daniel P. Berrange wrote: On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk 2010/12/14

Re: USB Passthrough 1.1 performance problem...

2010-12-14 Thread Avi Kivity
On 12/13/2010 10:25 AM, Alexander Graf wrote: Is your point in this case that USB in a VM based on PCI passthrough will always have problems when it comes to more real-time issues or does this only apply to USB passthrough? I can imagine that PCI passthrough is better since it uses

Re: USB Passthrough 1.1 performance problem...

2010-12-14 Thread Alexander Graf
Am 14.12.2010 um 11:02 schrieb Avi Kivity a...@redhat.com: On 12/13/2010 10:25 AM, Alexander Graf wrote: Is your point in this case that USB in a VM based on PCI passthrough will always have problems when it comes to more real-time issues or does this only apply to USB passthrough? I

Re: USB Passthrough 1.1 performance problem...

2010-12-14 Thread Daniel P. Berrange
On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkee e...@brakkee.org: From: Kenni Lund ke...@kelu.dk 2010/12/14 Erik Brakkee e...@brakkee.org: From: Kenni Lund ke...@kelu.dk Does this mean I have a chance now that PCI passthrough of my WinTV PVR-500

Re: USB Passthrough 1.1 performance problem...

2010-12-14 Thread Erik Brakkee
Daniel P. Berrange wrote: On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk Does this mean I have a chance

Re: USB Passthrough 1.1 performance problem...

2010-12-14 Thread Kenni Lund
2010/12/14 Erik Brakkee e...@brakkee.org: Daniel P. Berrange wrote: On Tue, Dec 14, 2010 at 12:55:04PM +0100, Kenni Lund wrote: 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk 2010/12/14 Erik Brakkeee...@brakkee.org: From: Kenni Lundke...@kelu.dk Does this

Re: USB Passthrough 1.1 performance problem...

2010-12-13 Thread Alexander Graf
On 12.12.2010, at 23:31, Erik Brakkee wrote: Jan Kiszka wrote: 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

Re: USB Passthrough 1.1 performance problem...

2010-12-13 Thread Gerd Hoffmann
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

Re: USB Passthrough 1.1 performance problem...

2010-12-13 Thread Jan Kiszka
Am 12.12.2010 23:31, Erik Brakkee wrote: Jan Kiszka wrote: 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

Re: USB Passthrough 1.1 performance problem...

2010-12-13 Thread Kenni Lund
2010/12/12 Erik Brakkee e...@brakkee.org: Does this mean I have a chance now that PCI passthrough of my WinTV PVR-500 might work now? Passthrough of a PVR-500 has been working for a long time. I've been running with passthrough of a PVR-500 in my HTPC, since November/December 2009...so it

Re: USB Passthrough 1.1 performance problem...

2010-12-13 Thread Kenni Lund
2010/12/14 Erik Brakkee e...@brakkee.org: From: Kenni Lund ke...@kelu.dk Does this mean I have a chance now that PCI passthrough of my WinTV PVR-500 might work now? Passthrough of a PVR-500 has been working for a long time. I've been running with passthrough of a PVR-500 in my HTPC, since

USB Passthrough 1.1 performance problem...

2010-12-12 Thread Erik Brakkee
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

Re: USB Passthrough 1.1 performance problem...

2010-12-12 Thread Erik Brakkee
Erik Brakkee wrote: 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

Re: USB Passthrough 1.1 performance problem...

2010-12-12 Thread Jan Kiszka
Am 12.12.2010 21:59, Erik Brakkee wrote: Erik Brakkee wrote: 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

Re: USB Passthrough 1.1 performance problem...

2010-12-12 Thread Erik Brakkee
Jan Kiszka wrote: 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