On Wed, Jul 07, 2021 at 11:46:16PM +0000, Keller, Jacob E wrote: > Either way, I found that whether I used a kthread or not I was > unable to avoid the timeout issue with ice hardware because the > delay is caused by the method we must use to access the Tx > timestamps :( We get into the kthread function within a few hundred > usec or less, and then the firmware read takes a long time, > sometimes over 2 milliseconds.
Yes, but when using "work" that 2 ms can easily become 200 ms or more on a busy RT system. The work is sched_other, and as such it is effectively running at the lowest priority WRT the sched_fifo tasks. Thanks, Richard _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
