Re: UDB speed comparison

David Mosberger (davidm@azstarnet.com)
Tue, 24 Sep 1996 20:09:30 -0700 (MST)


Greg Roelofs wrote:

> "Tracy R. Reed" <treed@straylight.connectnet.com> wrote:

> > host > > CPU > > Time
> >
> > redhat-udb > 166Mhz 21066 > 0:10.01
> > straylight > 66Mhz 486 > 1:24.43
> > sd > > 90Mhz Pentium > 0:43.55
> > rohan > > SS1000E 1cpu > 0:09.17
> > voyager > 133Mhz Pentium > 0:15.58
> > helios > SS20 > > 0:10.71
> >
> > So the UDB came up with 2,400 digits of pi in 10.01 seconds. Not bad. :)
> > It's the second fastest machine I have access to, but just barely. I wish
> > I still had that old account on the Cray II at Kirtland AFB. :)

> Here's the C90 result (Cray cc, not gcc; not vectorized/parallelized/etc.):

> time ./pihex > /dev/null
> 5.7767u 0.0361s 0:05 97%

> Presumably you're counting user+system time, so 5.81 seconds.

> (Do I win? :-) )

Ah, a contest---that's fun! How about:

$ time ./pi >/dev/null
4.40user 0.00system 0:04.41elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k

That's for a 300MHz eb164 running a very old kernel and Linux
distribution. ;-)

--david