Date: Thu, 15 Dec 2005 17:59:38 +0000 From: Pete French <petefrench@ticketswitch.com> To: killing@multiplay.co.uk, PeterJeremy@optushome.com.au Cc: rerowe@rerowe.com, stable@freebsd.org Subject: Re: kernel cpu entries Message-ID: <E1EmxOE-00053V-7l@dilbert.firstcallgroup.co.uk> In-Reply-To: <20051215173704.GM77268@cirb503493.alcatel.com.au>
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> UTSL: The i586 optimised routines were only ever enabled if the CPU > was identified as a 586. And these routines have been disabled since > mid-2001. See my mail in the "Odd performance problems..." thread > for more details. Got some curiuous results when I tested this today by the way. I have a twin processor PIII machine. Did a parallel compile on it. The actuall wall clock time is faster when I add the 586 back in. *but* if you look at the user and system times, the user time has dropped slightly, but the system tme has gone up a lot. So its doing more work, but with a slghtly greater amount of parallelism allow it to finish faster in real time. Can anyone explain that ???? -pete,.
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