Re: UDP sendto() fails with EINVAL when host under network load

2018-12-27 Thread Stephen Hemminger
On Thu, 27 Dec 2018 16:13:29 -0500 charles cross wrote: > The kernel is v3.10.0 from upstream RHEL 7.5. Can anyone offer advice before > I proceed down the stack to look for the root cause? The behavior (failure > under load but recovery after the load is removed) suggests contention for > res

UDP sendto() fails with EINVAL when host under network load

2018-12-27 Thread charles cross
Hi netdev, I've got an application that handles network traffic using various protocols. The application is comprised of a supervisor process and one or more worker processes that implement a watchdog that enables the supervisor to kill hung workers or detect when they've crashed and start new o