Messages in this thread | | | Subject | Re: Fixes for nforce2 hard lockup, apic, io-apic, udma133 covered | From | Ian Kumlien <> | Date | Sun, 14 Dec 2003 14:44:44 +0100 |
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Resend due to no CC...
On Sun, 2003-12-14 at 14:11, Ross Dickson wrote: > I had a lockup on a boot so I am trying a bit more conservative with > > 1000UL and ndelay(400) > > I don't think anyone should try any less than this but hey? > > This gives my system a safety margin of 16 apic counts. > The v1 patch on my system typically gave a safety delay of 13 counts. > > The performance hit with the v2 is still less than with the v1. > With v2 additional delay would only have been present on 2 out of 10 > instead of 10 out of 10 with v1.
13h 18min here now, with 800UL 100ns
Works like a charm. It seems like we are just avoiding a timer race with some values... ie more delay might not solve the problem.
-- Ian Kumlien <pomac () vapor ! com> -- http://pomac.netswarm.net [unhandled content-type:application/pgp-signature] | |