Re: [SeaBIOS] >256 Virtio-net-pci hotplug Devices

2017-07-24 Thread Marcel Apfelbaum
On 24/07/2017 7:53, Kinsella, Ray wrote: Hi Ray, Thank you for the details, So as it turns out at 512 devices, it is nothing to do SeaBIOS, it was the Kernel again. It is taking quite a while to startup, a little over two hours (7489 seconds). The main culprits appear to be

Re: [SeaBIOS] >256 Virtio-net-pci hotplug Devices

2017-07-23 Thread Kinsella, Ray
So as it turns out at 512 devices, it is nothing to do SeaBIOS, it was the Kernel again. It is taking quite a while to startup, a little over two hours (7489 seconds). The main culprits appear to be enumerating/initializing the PCI Express ports and enabling interrupts. The PCI Express Root

Re: [SeaBIOS] >256 Virtio-net-pci hotplug Devices

2017-07-23 Thread Kevin O'Connor
On Sun, Jul 23, 2017 at 07:28:01PM +0300, Marcel Apfelbaum wrote: > On 22/07/2017 2:57, Kinsella, Ray wrote: > > When scaling up to 512 Virtio-net devices SeaBIOS appears to really slow > > down when configuring PCI Config space - haven't manage to get this to > > work yet. If there is a slowdown

Re: [SeaBIOS] >256 Virtio-net-pci hotplug Devices

2017-07-23 Thread Marcel Apfelbaum
On 22/07/2017 2:57, Kinsella, Ray wrote: Hi Marcel Hi Ray, On 21/07/2017 01:33, Marcel Apfelbaum wrote: On 20/07/2017 3:44, Kinsella, Ray wrote: That's strange. Please ensure the virtio devices are working in virtio 1.0 mode (disable-modern=0,disable-legacy=1). Let us know any problems