Date: Fri, 28 Jul 2006 11:55:02 -0700 From: "Kevin Oberman" <oberman@es.net> To: Stephen.Clark@seclark.us Cc: freebsd-stable@freebsd.org Subject: Re: 6.1 smp kernel on uniprocessor Message-ID: <20060728185502.126EA45053@ptavv.es.net> In-Reply-To: Your message of "Fri, 28 Jul 2006 14:44:38 EDT." <44CA5B16.2040508@seclark.us>
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> Date: Fri, 28 Jul 2006 14:44:38 -0400 > From: Stephen Clark <Stephen.Clark@seclark.us> > Sender: owner-freebsd-stable@freebsd.org > > Hi list, > > Should a 6.1 smp compiled kernel run Ok on a uniprocessor? > > We ship both single core and dual core systems and would like to use > only one > kernel. It should run on a uniprocessor just fine, but I believe that there will be a performance penalty as and SMP kernel does additional work for synchronization that is not needed on single CPUs. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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