Re: x86, ARM, PARISC, PPC, MIPS and Sparc folks please run this
From: Kars de Jong
Date: Tue Sep 02 2003 - 15:44:39 EST
On Mon, 2003-09-01 at 12:08, Jamie Lokier wrote:
> Kars de Jong wrote:
> > On Mon, 2003-09-01 at 10:34, Geert Uytterhoeven wrote:
> > > BTW, probably you want us to run your test program on other m68k boxes? Mine
> > > got a 68040, that leaves us with:
> > > - 68020+68551
> > > - 68060
> >
> > I can run it on these boxes if no-one else has done it yet before I come
> > home tonight. I'm sure there are more people with a 68060 out there, not
> > too sure about the 68020+68851.
>
> I would prefer that you run the attached program. It fixes a bug in
> the function which tests whether the problem is in the L1 cache or
> store buffer. The bug probably didn't affect the test, but it might
> have.
>
> Ideally you could run the program Geert linked to as well?
> Please remember to compile both with optimisation.
OK, here are my results (I'll skip the 68060 because Roman has already
run the program on that one):
This is on a Plessey PME 68-22. It's sooooo fast... Sam, is there a Sun
slower than this?
Original program:
fikkie:/tmp# ./jamie_test
Test separation: 4096 bytes: pass
Test separation: 8192 bytes: pass
Test separation: 16384 bytes: pass
Test separation: 32768 bytes: pass
Test separation: 65536 bytes: pass
Test separation: 131072 bytes: pass
Test separation: 262144 bytes: pass
Test separation: 524288 bytes: pass
Test separation: 1048576 bytes: pass
Test separation: 2097152 bytes: pass
Test separation: 4194304 bytes: pass
Test separation: 8388608 bytes: pass
Test separation: 16777216 bytes: pass
VM page alias coherency test: all sizes passed
New program:
fikkie:/tmp# time ./jamie_test2
(2048) [10000,10000,0] Test separation: 4096 bytes: pass
(2048) [10000,10000,0] Test separation: 8192 bytes: pass
(2048) [10000,10000,0] Test separation: 16384 bytes: pass
(2048) [10000,10000,0] Test separation: 32768 bytes: pass
(2048) [10000,10000,0] Test separation: 65536 bytes: pass
(2048) [10000,10000,0] Test separation: 131072 bytes: pass
(2048) [10000,10000,0] Test separation: 262144 bytes: pass
(2048) [10000,10000,0] Test separation: 524288 bytes: pass
(2048) [10000,10000,0] Test separation: 1048576 bytes: pass
(2048) [10000,10000,0] Test separation: 2097152 bytes: pass
(2048) [10000,10000,0] Test separation: 4194304 bytes: pass
(2048) [10000,10000,0] Test separation: 8388608 bytes: pass
(2048) [10000,10000,0] Test separation: 16777216 bytes: pass
VM page alias coherency test: all sizes passed
real 1m51.210s
user 1m44.950s
sys 0m4.930s
fikkie:/tmp# cat /proc/cpuinfo
CPU: 68020
MMU: 68851
FPU: 68881
Clocking: 15.6MHz
BogoMips: 3.90
Calibration: 19520 loops
fikkie:/tmp#
And no, this board has no way of getting a better time resolution than
the 100 Hz tick timer either ;-)
Regards,
Kars.
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On Mon, 2003-09-01 at 12:08, Jamie Lokier wrote:
> Kars de Jong wrote:
> > On Mon, 2003-09-01 at 10:34, Geert Uytterhoeven wrote:
> > > BTW, probably you want us to run your test program on other m68k boxes? Mine
> > > got a 68040, that leaves us with:
> > > - 68020+68551
> > > - 68060
> >
> > I can run it on these boxes if no-one else has done it yet before I come
> > home tonight. I'm sure there are more people with a 68060 out there, not
> > too sure about the 68020+68851.
>
> I would prefer that you run the attached program. It fixes a bug in
> the function which tests whether the problem is in the L1 cache or
> store buffer. The bug probably didn't affect the test, but it might
> have.
>
> Ideally you could run the program Geert linked to as well?
> Please remember to compile both with optimisation.
OK, here are my results (I'll skip the 68060 because Roman has already
run the program on that one):
This is on a Plessey PME 68-22. It's sooooo fast... Sam, is there a Sun
slower than this?
Original program:
fikkie:/tmp# ./jamie_test
Test separation: 4096 bytes: pass
Test separation: 8192 bytes: pass
Test separation: 16384 bytes: pass
Test separation: 32768 bytes: pass
Test separation: 65536 bytes: pass
Test separation: 131072 bytes: pass
Test separation: 262144 bytes: pass
Test separation: 524288 bytes: pass
Test separation: 1048576 bytes: pass
Test separation: 2097152 bytes: pass
Test separation: 4194304 bytes: pass
Test separation: 8388608 bytes: pass
Test separation: 16777216 bytes: pass
VM page alias coherency test: all sizes passed
New program:
fikkie:/tmp# time ./jamie_test2
(2048) [10000,10000,0] Test separation: 4096 bytes: pass
(2048) [10000,10000,0] Test separation: 8192 bytes: pass
(2048) [10000,10000,0] Test separation: 16384 bytes: pass
(2048) [10000,10000,0] Test separation: 32768 bytes: pass
(2048) [10000,10000,0] Test separation: 65536 bytes: pass
(2048) [10000,10000,0] Test separation: 131072 bytes: pass
(2048) [10000,10000,0] Test separation: 262144 bytes: pass
(2048) [10000,10000,0] Test separation: 524288 bytes: pass
(2048) [10000,10000,0] Test separation: 1048576 bytes: pass
(2048) [10000,10000,0] Test separation: 2097152 bytes: pass
(2048) [10000,10000,0] Test separation: 4194304 bytes: pass
(2048) [10000,10000,0] Test separation: 8388608 bytes: pass
(2048) [10000,10000,0] Test separation: 16777216 bytes: pass
VM page alias coherency test: all sizes passed
real 1m51.210s
user 1m44.950s
sys 0m4.930s
fikkie:/tmp# cat /proc/cpuinfo
CPU: 68020
MMU: 68851
FPU: 68881
Clocking: 15.6MHz
BogoMips: 3.90
Calibration: 19520 loops
fikkie:/tmp#
And no, this board has no way of getting a better time resolution than
the 100 Hz tick timer either ;-)
Regards,
Kars.
-
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Please read the FAQ at http://www.tux.org/lkml/