On Sun, Jun 19, 2016 at 12:33 PM, Dale Ghent <[email protected]> wrote:
> One thing I'd like to see people who have ixgbe hardware (X550 and > anything else) is RSS. A good smoke test is to open up a high-traffic TCP > stream between the ixgbe box and another, with the ixgbe box being the > receiver. A tool for this is iperf. > > In another window, watch interrupt count for ixgbe using 'intrstat 1' - > you should see a ton of interrupts from ixgbe landing on one particular CPU. > > Then, open up a second (or third, or fourth) such stream and you should > see the interrupts for those land on a different CPU, as show with intrstat. > > Since receive-side scaling was one of the major areas I had to re-work to > accommodate X550, this basic test would be a quick (albeit not exactly > scientific) way of making sure it's working as intended. It does seem to be spreading, though not evenly or to all CPUs (4 of 8) but that may be because I am only able to put 250 Mbit/s at it or because I am in a zone. ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
