Date: 25 Jun 99 22:56:29 PDT From: Jesus Monroy <jesus.monroy@usa.net> To: Ville-Pertti Keinonen <will@iki.fi> Cc: hackers@freebsd.org Subject: Re: [Re: coarse vs fine-grained locking in SMP systems] Message-ID: <19990626055629.6978.qmail@www0i.netaddress.usa.net>
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Ville-Pertti Keinonen <will@iki.fi> wrote: > mo@servo.ccr.org (Mike O'Dell) writes: > > we published the best Unix SMP paper I've ever seen in Computing > > Systems - from the Amdahl guys who did an SMP version of the kernel > > by very clever hacks on SPLx() macros to make them spin locks and > > a bit of other clever trickery on the source. they could take a stoc= k > = > An approach like that can't possibly be sufficient if code has been > written with the assumption that only interrupt-like events or > blocking calls can change things from under it. There is quite a bit > of code in FreeBSD that relies on this. > = Can you elaborate on this a bit more? I think I missing some of the finer points on what you are saying. I work on interrupt driven device drivers and I'm trying to see how this ties in. --- "I'd rather pay for my freedom than live in a bitmapped, = pop-up-happy dungeon like NT." http://www.performancecomputing.com/features/9809of1.shtml ____________________________________________________________________ Get free e-mail and a permanent address at http://www.netaddress.com/?N=3D= 1 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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