We had some spare minuts after a exam today and was feelt for doing some
benchmarks.
We choosed to use Mcoy's stream benchmark. Why? Because the specs in
the 21264 talks about the stream perfomance, and I wanted to know
how 'extraordinare' the results were..
Here we go..
The stream test gives several results, but I'm just doing an 'mean' here..
Noname 266Mhz 15ns Cache: 31M/s
Pentiums 90-200Mhz: 60-110M/s
Hmmm.. Ok, that was I expected, we all knew the memsubsystem sux on the
LCA's. Time to try some better hw.
AS500/400: 160M/s
Pentium Pro 200Mhz: 140M/s.
What? The AS500, with 8M cache, 256bit memaccess, is only ~15% faster
than an elcheap PPro? And I thought workstations were supposed to have
nice Subsystems... I check tons of em around here.. Ultra's for example
also has in the 140-200M/s range..Sigh..
Oh, and Incase you have forgotten, the 21264 is said to have about
~1.6GB/s (yes GigaByte/sec) in this mentioned test :-)) though, there
is a bit left to the fastest 1 cpu machine, a Cray Something is about
11G/s ;)
Any1 knows what an 21164PC with SDRAM will score? Even a good guess
would do fine for me.. I'm trying to decide wheter to go for a
PC164 or 21164PC, and if SDRAM's is gonna make it fly, and make it
cheaper than the pc164 the choice is simple.. Though that eq seems
somewhat hard..
Oh btw.. Any1 knows if there has been some major changes to the
buffercache system on the axp's that makes the Nonames atleast
suck totally when it comes to disk speed? In the 1.3 kernel I had
about 5.5M/s and now, 2.0.18, about 3.7M/s.. Hmm
/Mikael
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