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 was sane, that 128 was twice the number of root ports and
virtio-pci-net devices as 64.
I got the following results - shown in seconds, as you can see it is non
linear but not exponential, there is something that is not scaling well.
64 128 256 512
PCIe Root Ports 14 72 430 2672
ACPI 4 35 342 3863
Loading Drivers 1 1 31 621
Total Boot 34 137 890 7516
( I did try to test 1024 devices, but it just dies silently )
Ray K
