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- To: MISC
- From: lowry@xxxxxxxxxxxxxxxxx (Dave Lowry)
- Date: Tue, 18 Apr 95 15:23:31 CDT
- Posted-Date: Tue, 18 Apr 95 15:23:31 CDT
Jeff and MISC readers,
I was just attempting to give folks some idea of what they could expect from
P21 with an apples/apples comparison. I *did* point out that P21Forth
was not as tweaked as UR/Forth. I in no way meant the benchmark to be
a criticism of P21, P21Forth, or Jeff. P21 coming in at the equivalent to
a 386DX27 or so impressed the hell out of me.
>CORDIC coordinate tranformation:
>MuP21 running P21Forth in DRAM with CORDIC in CODE and video on: 20 uS
>MuP21 in SRAM with CORDIC in CODE w/o video on: (est) 6 uS
>486 50 running FPC with Colon def of CORDIC: 500 uS
Apples/oranges. CODE vs. COLON.
>Towers of Hanoi:
>MuP21 running P21Forth in DRAM with Colon def and video on: .6 Sec
>486 50 running eForth 2.42 (same as P21Forth) with Colon def: 12 Sec
Apples/oranges again. eForth 31 words in CODE vs. P21Forth 200 words in CODE.
>3D coordinate transformation with rotation and clipping of a CUBE:
>MuP21 running P21Forth 1.02 in DRAM with Colon def and video on: 20 frames/S
> My version of Dave Lowry's 3D demo.
>486 50 running FPC with Colon def (Mark Smiley's graphics demo): 4 frames/S
Lowry/Smiley :-) Don't know what Mark's code does or how it's written.
>Multitasking tests:
>MuP21 running P21Forth background tasks incrementing counter: 120k /S
>MuP21 w/ high speed sram and no video (estimated): 400k /S
>486 50 running eForth 2.42 (same as P21Forth) tasks in background: 40k /S
>486 50 running FPC with 1 background task incrementing counter: 60k /S
Apples/apples pretty much. Fair comparison.
>Loop Tests:
>MuP21 running P21Forth : X 1000000 0 DO 34 DROP LOOP ; 25 S
>MuP21 running P21Forth : X 1000000 FOR 34 DROP NEXT ; 4 S
>MuP21 w/ high speed sram and no video (estimated): 1 S
>486 50 running eForth 2.42 (same) : X 1000000 0 DO 34 DROP LOOP ; 17 S
>486 50 running FPC : X 1000 0 DO 1000 0 DO 34 DROP LOOP LOOP ; 2 S
>486 50 running TCOM (optimizing native code compiler) 1 S
The point of my posting the graphics benchmark was to ground P21 performance
in a "real world" application. The "do 34 drop loop" benchmark seems utterly
useless to me.
-Dave
