https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=173541
--- Comment #27 from Alexander Motin <m...@freebsd.org> --- @Kubilay Kocak, I don't think this should be related to timecounters. It must be a coincidence. As I have written 7 years ago in comment 9, I believe it is a result of some synchronization between load average callouts and some other events. Since you've mentioned HPET, I'd think towards not HPET as timecounter, but as HPET as eventtimer. Depending on hardware and number of CPUs, kernel may have to use single HPET interrupt to deliver timer interrupts to multiple CPUs. As result, it is very simple to have two or more CPU to wake up from a long sleep same time (one where HPET interrupt is routed to and another where timer event is actually scheduled), that may cause load average callout to sample simultaneous threads. -- You are receiving this mail because: You are the assignee for the bug.
