On Fri, Sep 21, 2018 at 02:02:26PM +0200, Sebastian Andrzej Siewior wrote: > This matches Daniel Wagner's observations which he described in [0] on > v4.4-RT.
Peter Z recommended to drop to ticket spinlocks instead trying to port back all the qspinlock changes to v4.4-rt. With ticket spinlocks, 'stress-ng --ptrace 4' run for 50 hours without a problem (before it was seconds) and my normal workload for -rt testing for 60 hours without a problem (before it broke within 24h). The cyclictest max values went slightly down from 32us to 30us but that might just be coincidence. Thanks, Daniel
