Messages in this thread | | | Subject | Re: [bug, bisected] pfifo_fast causes packet reordering | From | Jakob Unterwurzacher <> | Date | Wed, 21 Mar 2018 11:01:17 +0100 |
| |
On 16.03.18 11:26, Jakob Unterwurzacher wrote: > On 15.03.18 23:30, John Fastabend wrote: >>> I have reproduced it using two USB network cards connected to each >>> other. The test tool sends UDP packets containing a counter and >>> listens on the other interface, it is available at >>> https://github.com/jakob-tsd/pfifo_stress/blob/master/pfifo_stress.py >> >> Great thanks, can you also run this with taskset to bind to >> a single CPU, >> >> # taskset 0x1 ./pifof_stress.py >> >> And let me know if you still see the OOO. > > Interesting. Looks like it depends on which core it runs on. CPU0 is > clean, CPU1 is not.
So we are at v4.16-rc6 now - have you managed to reproduce this is or should I try to get the revert correct?
Best regards, Jakob
| |