Subject: Re: FPU Performance on DECstation 5000/125
To: Karl Maftoum <firstname.lastname@example.org>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
Date: 08/26/1997 04:59:33
On Tue, 26 Aug 1997 13:50:38 +1000 (EST),
Karl Maftoum <email@example.com> writes:
> Is the FPU enabled properly in 1.2G?
Gosh, I hope so. If not, I guess the FP emulation is really, really robust.
Hm. Maybe you're using denorms a lot, and the emulation code isn't as
well-tuned as Ultrix?? The sure way to find out is to add some
instrumentation to the kernel trap handlers and interrupt code, in
interrupt() and trap() in sys/arch/mips/mips/trap.c.
> Which brings me to my second >qn..
>Every time we go to compile the kernel the config program stops about mid
>way with various problems.. what are we doing wrong?
Rebuild and reinstall /usr/sbin/config. This is usually due to
running old versions of config against new config files. We deleted
the statically-configured default swap partition; swap partitions (or
files) are now configured dynamically.
If that doesn't work, sup new sources and/or get a snapshot with a