michaelk@azure.UUCP (Mike Kersenbrock) (11/15/85)
Yes, the Z80 can do dhrystones (at all). I noticed that only
"16-bit" and larger processors were being compared. I thought it would
be interesting to compare this benchmark (for whatever it's worth) to
a "last-generation" CPU to see just how much improvement we've actually
had (if any).
My oldie goldie home computer is a Z80B that currently runs at 5.0 Mhz with no
wait states. It runs CP/M 3.0 ("CP/M Plus") with timestamping.
The compiler is Aztec C II (release 1.05g). I compiled the net.sources
dhrystone benchmark with noenums, and using "time(2)". I implemented
time(2) previously when I was getting "make" up and running. I ran it
with LOOPS = 50000.
My results should be clockrate-proportional to to any other Z80 based
system with the same compiler and no waitstates.
My results are the first entry below, making it the new slowest CPU
on the block, however, it's not as slow as I expected.
Mike Kersenbrock
Tektronix Software Development Products
Aloha, Oregon
/*
* "DHRYSTONE" Benchmark Program
*
* Version: C/1
* Date: 12/01/84, RESULTS updated 10/22/85 (now 11/14/85)
* Author: Reinhold P. Weicker, CACM Vol 27, No 10, 10/84 pg. 1013
* Translated from ADA by Rick Richardson
* Every method to preserve ADA-likeness has been used,
* at the expense of C-ness.
~
* ~
* MACHINE MICROPROCESSOR OPERATING COMPILER DHRYSTONES/SEC.
* TYPE SYSTEM NO REG REGS
* -------------------------- ------------ ----------- ---------------
* "generic" Z80 - 5.0 MHz CP/M 3.0 Aztec C II 165 180
* IBM PC/XT 8088-4.77Mhz PC/IX cc 257 287
* Cosmos 68000-8Mhz UniSoft cc 305 322
* IBM PC/XT 8088-4.77Mhz VENIX/86 2.0 cc 297 324
* IBM PC 8088-4.77Mhz MSDOS 2.0 b16cc 2.0 310 340
* IBM PC 8088-4.77Mhz MSDOS 2.0 CI-C86 2.20M 390 390
* IBM PC/XT 8088-4.77Mhz PCDOS 2.1 Lattice 2.15 403 - @
* PDP-11/34 - UNIX V7M cc 387 438
* Onyx C8002 Z8000-4Mhz IS/1 1.1 (V7) cc 476 511
* ATT PC6300 8086-8Mhz MSDOS 2.11 b16cc 2.0 632 684
* IBM PC/AT 80286-6Mhz PCDOS 3.0 CI-C86 2.1 666 684
* Macintosh 68000-7.8Mhz 2M Mac Rom Mac C 32 bit int 694 704
* Macintosh 68000-7.7Mhz - MegaMax C 2.0 661 709
* NEC PC9801F 8086-8Mhz PCDOS 2.11 Lattice 2.15 768 - @
* ATT PC6300 8086-8Mhz MSDOS 2.11 CI-C86 2.20M 769 769
* ATT 3B2/300 WE32000-?Mhz UNIX 5.0.2 cc 735 806
* IBM PC/AT 80286-6Mhz PCDOS 3.0 MS 3.0(large) 833 847 LM
* VAX 11/750 - Unix 4.2bsd cc 862 877
* Fast Mac 68000-7.7Mhz - MegaMax C 2.0 839 904 +
* Macintosh 68000-7.8Mhz 2M Mac Rom Mac C 16 bit int 877 909 S
* IRIS-1400 68010-10Mhz Unix System V cc 909 1000
* IBM PC/AT 80286-6Mhz VENIX/86 2.1 cc 961 1000
* IBM PC/AT 80286-6Mhz PCDOS 3.0 b16cc 2.0 943 1063
* IBM PC/AT 80286-6Mhz PCDOS 3.0 MS 3.0(small) 1063 1086
* VAX 11/750 - VMS VAX-11 C 2.0 958 1091
* ATT PC7300 68010-10Mhz UNIX 5.2 cc 1041 1111
* ATT PC6300+ 80286-6Mhz MSDOS 3.1 b16cc 2.0 1111 1219
* Sun2/120 68010-10Mhz Sun 4.2BSD cc 1136 1219
* IBM PC/AT 80286-6Mhz PCDOS 3.0 CI-C86 2.20M 1219 1219
* MASSCOMP 500 68010-10MHz RTU V3.0 cc (V3.2) 1156 1238
* Cyb DataMate 68010-12.5Mhz Uniplus 5.0 Unisoft cc 1162 1250
* PDP 11/70 - UNIX 5.2 cc 1162 1250
* IBM PC/AT 80286-6Mhz PCDOS 3.1 Lattice 2.15 1250 - @
* IBM PC/AT 80286-7.5Mhz VENIX/86 2.1 cc 1190 1315 *
* Sun2/120 68010-10Mhz Standalone cc 1219 1315
* ATT 3B2/400 WE32100-?Mhz UNIX 5.2 cc 1315 1315
* HP-110 8086-5.33Mhz MSDOS 2.11 Aztec-C 1282 1351 ?
* IBM PC/AT 80286-6Mhz ? ? 1250 1388 ?
* ATT PC6300+ 80286-6Mhz MSDOS 3.1 CI-C86 2.20M 1428 1428
* Cyb DataMate 68010-12.5Mhz Uniplus 5.0 Unisoft cc 1470 1562 S
* VAX 11/780 - UNIX 5.2 cc 1515 1562
* MicroVAX-II - - - 1562 1612
* ATT 3B20 - UNIX 5.2 cc 1515 1724
* HP9000-500 B series CPU HP-UX 4.02 cc 1724 -
* IBM PC/STD 80286-8Mhz ? ? 1724 1785
* Gould PN6005 - UTX 1.1(4.2BSD) cc 1675 1964
* VAX 11/785 - UNIX 5.2 cc 2083 2083
* VAX 11/785 - VMS VAX-11 C 2.0 2083 2083
* Pyramid 90x - OSx 2.3 cc 2272 2272
* Pyramid 90x - OSx 2.5 cc 3125 3125
* SUN 3/75 68020-16.67Mhz SUN 4.2 V3 cc 3333 3571
* Sun 3/180 68020-16.67Mhz Sun 4.2 cc 3333 3846
* MC 5400 68020-16.67MHz RTU V3.0 cc (V4.0) 3952 4054
* SUN-3/160C 68020-16.67Mhz Sun3.0ALPHA1 Un*x 3333 4166
* Gould PN9080 - UTX-32 1.1c cc - 4629
* MC 5600/5700 68020-16.67MHz RTU V3.0 cc (V4.0) 4504 4746 %
* VAX 8600 - VMS VAX-11 C 2.0 7142 7142
* Amdahl 470 V/8 ? ? - 15015
* Amdahl 580 - UTS 5.0 Rel 1.2 cc Ver. 1.5 23076 23076
* Amdahl 5860 ? ? - 28355
*
* * 15Mhz crystal substituted for original 12Mhz;
* + This Macintosh was upgraded from 128K to 512K in such a way that
* the new 384K of memory is not slowed down by video generator accesses.
* % Single processor; MC == MASSCOMP
* & Seattle Telecom STD-286 board
* @ vanilla Lattice compiler used with MicroPro standard library
* S Shorts used instead of ints
* LM Large Memory Model. (Otherwise, all 80x8x results are small model)
* ? I don't trust results marked with '?'. These were sent to me with
* either incomplete information, or with times that just don't make sense.
* If anybody can confirm these figures, please respond.
*
--
Mike Kersenbrock
Tektronix Software Development Products
Aloha, Oregon