Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP

2018-07-02 Thread Paul Durrant
> -Original Message- > From: Andreas Kinzler [mailto:h...@posteo.de] > Sent: 01 July 2018 21:15 > To: Paul Durrant > Cc: Roger Pau Monne ; xen-de...@lists.xen.org > Subject: Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP > > On Tue, 26 Jun 2

Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP

2018-07-01 Thread Andreas Kinzler
On Tue, 26 Jun 2018 09:47:11 +0200, Paul Durrant wrote: > is not affected at all. The test uses standard iperf3 as a client - > the passed PCI device is not used in the test - so that > just the presence of the passed device will cause the iperf3> performance to drop from 6.5 gbit/sec (no

Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP

2018-06-26 Thread Paul Durrant
> -Original Message- > From: Roger Pau Monne > Sent: 26 June 2018 07:57 > To: Andreas Kinzler > Cc: xen-de...@lists.xen.org; Paul Durrant > Subject: Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP > > On Mon, Jun 25, 2018 at 05:32:58PM +020

Re: [Xen-devel] PCI passthrough performance loss with Skylake-SP

2018-06-25 Thread Roger Pau Monné
On Mon, Jun 25, 2018 at 05:32:58PM +0200, Andreas Kinzler wrote: > I am currently testing PCI passthrough on the Skylake-SP platform using a > Supermicro X11SPi-TF mainboard. Using PCI passthrough (an LSI SAS HBA) > causes severe performance loss on the Skylake-SP platform while Xeon E3 v5 > is not

[Xen-devel] PCI passthrough performance loss with Skylake-SP

2018-06-25 Thread Andreas Kinzler
I am currently testing PCI passthrough on the Skylake-SP platform using a Supermicro X11SPi-TF mainboard. Using PCI passthrough (an LSI SAS HBA) causes severe performance loss on the Skylake-SP platform while Xeon E3 v5 is not affected at all. The test uses standard iperf3 as a client - the