Date: Sun, 5 Apr 1998 19:26:07 -0400 (EDT) From: Peter Dufault <dufault@hda.com> To: peter@netplex.com.au (Peter Wemm) Cc: peter@netplex.com.au, smp@FreeBSD.ORG Subject: Re: beware! -current under SMP is "not looking good". Message-ID: <199804052326.TAA24641@hda.hda.com> In-Reply-To: <199804050750.PAA07051@spinner.netplex.com.au> from Peter Wemm at "Apr 5, 98 03:50:49 pm"
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> It seems that doing a 'setpriority()' is the last thing that happens > before the hang with ntpdate. I wonder if the posix4 stuff is having an > effect here? The latest round of changes were minor. The "maybe_resched" that went in near the beginning of March would be more likely to cause problems - that was what broke idle priority. That leaves a big window from the beginning of March until now so I expect the problem would have shown up earlier. Anyone suspecting them can roll back to the date of that last change to sys/_posix.h and verify if the problems are new or not. The only recent non-optional change is the check of the new scheduling classes in swtch.s and I don't think that can cause any problems. Peter -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Safety critical systems, Agency approval To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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