The following reply was made to PR kern/172166; it has been noted by GNATS.
From: Andriy Gapon <a...@freebsd.org> To: bug-follo...@freebsd.org Cc: Alexander Motin <m...@freebsd.org>, eu...@eg.sd.rdtc.ru Subject: Re: kern/172166: Deadlock in the networking code, possible due to a bug in the SCHED_ULE Date: Wed, 03 Oct 2012 17:56:39 +0300 on 02/10/2012 09:58 Alexander Motin said the following: > About rw_lock priority propagation locking(9) tells: > The rw_lock locks have priority propagation like mutexes, but priority can be > propagated only to an exclusive holder. This limitation comes from the fact > that > shared owners are anonymous. Yeah... and as we see it has a potential to result in priority inversion. > What's about idle stealing threshold, it was fixed in HEAD at r239194, but > wasn't > merged yet. It should be trivial to merge it. And I've also misread the code, confused 6 CPUs case with 8 CPUs case. -- Andriy Gapon _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
