[parisc-linux] Progress
Stan Sieler
sieler@allegro.com
Mon, 22 Nov 1999 10:27:25 -0800 (PST)
Re:
> Missed this point because of the strange nop. The current addib loop is 3
> instructions. Alignment to a multiple of 16 should be good enough to
> ensure that the loop lies within a cache line. This would insert a maximum
> of 3 nops before the loop. This would provide a slightly more deterministic
> result.
>
> Also, re the BogoMIPS number, I think this should be (loops_per_sec*3)/2000000
...
This should be timed on a PA-RISC 2.0 machine, just in case. Some of
them are really good at apparently doing things twice as fast as you'd
expect :)
Our K460 gets twice the MIPs you'd expect ... i.e., it executes a simple
timing loop at about 360 million instructions per second ...
on a single CPU machine with a 180 MHz clock!
--
Stan Sieler sieler@allegro.com
www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler