3:53 AM
To: Kinsella, Ray ; Kevin O'Connor
Cc: Tan, Jianfeng ; seab...@seabios.org; Michael
Tsirkin ; qemu-devel@nongnu.org; Gerd Hoffmann
Subject: Re: [Qemu-devel] >256 Virtio-net-pci hotplug Devices
On 07/08/2017 22:00, Kinsella, Ray wrote:
> Hi Marcel,
>
Hi Ray,
Please
, Ray ; Kevin O'Connor
Cc: Tan, Jianfeng ; seab...@seabios.org; Michael Tsirkin
; qemu-devel@nongnu.org; Gerd Hoffmann
Subject: Re: [Qemu-devel] >256 Virtio-net-pci hotplug Devices
It is an issue worth looking into it, one more question, all the measurements
are from OS boot? Do you us
5:43 AM
To: Kinsella, Ray ; Kevin O'Connor
Cc: Tan, Jianfeng ; seab...@seabios.org; Michael
Tsirkin ; qemu-devel@nongnu.org; Gerd Hoffmann
Subject: Re: [Qemu-devel] >256 Virtio-net-pci hotplug Devices
It is an issue worth looking into it, one more question, all the measurements
are fro
On 25/07/2017 21:00, Kinsella, Ray wrote:
Hi Marcel,
Hi Ray,
On 24/07/2017 00:14, Marcel Apfelbaum wrote:
On 24/07/2017 7:53, Kinsella, Ray wrote:
Even if I am not aware of how much time would take to init a bare-metal
PCIe Root Port, it seems too much.
So I repeated the testing for 64
Hi Marcel,
On 24/07/2017 00:14, Marcel Apfelbaum wrote:
On 24/07/2017 7:53, Kinsella, Ray wrote:
Even if I am not aware of how much time would take to init a bare-metal
PCIe Root Port, it seems too much.
So I repeated the testing for 64, 128, 256 and 512 ports. I ensured the
configuration
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 enumerating/init
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 Po
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
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 yo
Hi Marcel
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 you see.
Not sure what yet, I will try scaling it with
On 20/07/2017 3:44, Kinsella, Ray wrote:
Hi Marcel,
Hi Ray,
You can use multi-function PCIe Root Ports, this will give you 8 ports
per slot, if you have 16 empty slots (I think we have more) you reach
128 root ports.
Then you can use multi-function virtio-net-pci devices, this will
give you
Hi Marcel,
You can use multi-function PCIe Root Ports, this will give you 8 ports
per slot, if you have 16 empty slots (I think we have more) you reach
128 root ports.
Then you can use multi-function virtio-net-pci devices, this will
give you 8 functions per port, so you reach the target of 102
On 18/07/2017 0:50, Kinsella, Ray wrote:
Hi folks,
Hi Ray,
I am trying to create a VM that supports hot-plugging a large number of
virtio-net-pci device,
up to 1000 devices initially.
From the docs (see below) and from playing with QEMU, it looks like there are
two options.
Both with lim
Hi folks,
I am trying to create a VM that supports hot-plugging a large number of
virtio-net-pci device,
up to 1000 devices initially.
>From the docs (see below) and from playing with QEMU, it looks like there are
>two options.
Both with limitations.
PCI Express switch
It looks like using a
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