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Date:      Wed, 18 Aug 1999 12:21:04 -0600
From:      Charles Randall <crandall@matchlogic.com>
To:        freebsd-smp@FreeBSD.ORG
Subject:   SMP differences between -stable and -current (RE: wine and SMP)
Message-ID:  <64003B21ECCAD11185C500805F31EC0303786DA1@houston.matchlogic.com>

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[Note: only to -smp]

Which of those limitations also apply to -current?

Charles

-----Original Message-----
From: Bruce Albrecht [mailto:bruce@zuhause.mn.org]
...
Even though SMP is supported in -stable, you must recognize that it's
a fairly weak implementation.  For the most part, there's only one
kernel lock, so in general, you can't have more than one CPU doing
kernel stuff, even though the two kernel requests (for example, two
separate disk controllers, or two NICs) are independent of each other.
There's no processor affinity.  A threaded process can't have multiple
threads running simultaneously on multiple CPUs.  I'm sure there are
other deficiencies I've left out.


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