Dhrystone Benchmark Results - Roy Longbottom's PC benchmark Collection

Dhrystone Benchmark Results On PCs

Windows PC Results	Linux Results	Android Results
Raspberry Pi Results	DOS and OS/2 Results

Description

The Dhrystone "C" benchmark provides a measure of integer performance (no floating point instructions). It became the key standard benchmark from 1984, with the growth of Unix systems. The first version was produced by Reinhold P. Weicker in ADA and translated to "C" by Rick Richardson.

Two versions are available - Dhrystone versions 1.1 and 2.1. The second version was produced to avoid over-optimisation problems encountered with version 1. Although it is recommended that advanced optimisation levels should be avoided with the latter, it is clear from published results that the recommendation is usually ignored.

This document contains results of optimised and non-optimised versions of Dhrystone 1 and 2 on PCs. The pre-compiled benchmarks can be found in BenchNT.zip which also contains the source codes, providing further explanatory comments. DOS versions are available in DosTests.zip, some to run via OS/2 in OS2Tests.zip and a 16 bit version in cb16bit.zip. Then there is My Main Page for other PC benchmarks and results.

Original versions of the benchmark gave performance ratings in terms of Dhrystones per second. This was later changed to VAX MIPS by dividing Dhrystones per second by 1757, the DEC VAX 11/780 result.

Dhrystone Reference - Reinhold P. Weicker, CACM Vol 27, No 10, 10/84,pg.1013

Results

The following is a sample of results. Performance tends to be proportional to CPU MHz for a given type of processor. Details of cache sizes and range of CPU MHz can be found in CPUSpeed.htm. Results include those from DOS and Windows compilations that produce very similar speed measurements. OS/2 and 16 bit results are included at the bottom of the table.

Later results are for new optimised compilations via Microsoft 32 bit and 64 bit compilers, the latter with integer variables declared as 32 and 64 bits. Results for 32 bit integers show that 64 bit compilations are up to 56% faster than the 32 bit versions. Much of the gain appears to be due to a different translation of the C source code but, with twice as many registers available for optimisation at 64 bits, there could be some performance improvement. Regarding 64 bit compilations, the versions using 64 bit integers were both slower than with 32 bit integers. by 27% in one case. This might be due to the higher volume of data from cache with 64 bit words but limited compilations were inconclusive when some of the code was omitted. The EXE files can be found in Win64.zip and C/C++ source code in NewSource.zip.

Results from compilations, following others for 32 bit and 64 bit tests, are from a later Microsoft compiler, with samples that include an Intel Atom based tablet, using Windows 10.

Other results are for the same code ported to 32-Bit and 64-Bit Linux using the supplied GCC compiler (all free software) - see linux benchmarks.htm and download benchmark execution files, source code, compile and run instructions in classic_benchmarks.tar.gz. Using Windows the file downloaded wrongly as classic_benchmarks.tar.tar but was fine when renamed classic_benchmarks.tar.gz. Results are shown separately below.

Later conversions were varieties to run on Android tablets and phones on ARM CPUs. These use a Java front end for starting and displaying results, with the compiled C code for calculations. Download Dhrystone2.apk and Dhrystone2i.apk see android benchmarks.htm, Android Native ARM-Intel Benchmarks.htm and Android 64 Bit Benchmarks.htm also results here.

Latest benchmark was compiled and run on a Raspberry Pi that uses ARM CPUs and Linux. See Raspberry Pi Benchmarks.htm and download from Raspberry_Pi_Benchmarks.zip. Then updated (2015), inculding Raspberry Pi 2, exising benchmarks and new version from a later compiler. Raspberry Pi 3 results were added in 2016. The results are also here. Benchmarks and source codes for 64 bit Linux are in Rpi3-64-Bit-Benchmarks.tar.gz.

Dhry1 Dhry1 Dhry2 Dhry2 Opt NoOpt Opt NoOpt VAX VAX VAX VAX CPU MHz MIPS MIPS MIPS MIPS AMD 80386 40 17.5 4.32 13.7 4.53 IBM 486D2 50 26.6 7.89 22.4 7.89 80486 DX2 66 45.1 12.0 35.3 12.4 IBM 486BL 100 53.9 12.0 40.9 11.8 AMD 5X86 133 84.5 9.37 84.5 9.42 Pentium 75 112 19.3 87.1 18.9 Cyrix P150 120 175 27.9 160 28.3 Pentium 100 169 31.8 122 32.2 Cyrix PP166 133 219 38.4 180 39.8 IBM 6x86 150 234 44.1 188 43.9 Pentium 133 239 38.3 181 39.0 Pentium 166 270 43.6 189 43.9 Cyrix PR233 188 286 46.4 232 45.8 Pentium 200 353 47.4 269 48.1 Pentium MMX 200 352 51.4 276 51.0 AMD K6 200 349 43.1 289 43.3 Pentium Pro 200 373 92.4 312 91.9 Celeron A 300 553 133 484 136 Pentium II 300 544 132 477 136 AMD K62 500 778 77.8 606 76.8 AMD K63 450 804 76.3 645 77.4 Pentium II 450 813 199 713 204 Celeron A 450 828 198 720 202 Pentium III 450 846 197 722 203 Pentium III 600 1105 263 959 270 Athlon 600 1316 321 942 316 Duron 600 1382 350 999 349 Pentium III 1000 1858 461 1595 465 PIII Tualatin 1200 2205 546 1907 571 Pentium 4 1700 2262 239 1843 242 Athlon Tbird 1000 2282 634 1659 602 Duron 1000 2288 576 1674 587 Celeron M 1295 2440 640 2273 645 Atom 1600 2462 717 1828 728 Pentium 4 1900 2593 261 2003 269 Atom 1666 2600 772 1948 780 P4 Xeon 2200 3028 300 2265 309 Atom Z8300 1840 3203 904 2686 927 Athlon 4 1600 3707 956 2830 1004 Pentium M 1862 4082 954 3933 975 Ath4 Barton 1800 4181 1061 3172 1099 Pentium 4E 3000 4379 566 3553 566 Athlon XP 2080 4826 1228 3700 1312 Turion 64 M 1900 4972 1186 3742 1150 Pentium 4 3066 5052 432 4012 434 Opteron 1991 5077 1268 3985 1223 Core 2 Duo M 1830 5379 892 4952 966 Athlon XP 2338 5433 1400 4160 1482 Athlon 64 2150 5658 1312 4288 1355 Pentium 4 3678 5787 511 4227 480 Athlon 64 2211 5798 1348 4462 1312 Celeron C2 M 2000 5804 932 5275 1050 Core 2 Duo 1 CP 2400 7145 1198 6446 1251 Core i5 2467M @@@@ 8338 1183 4752 1148 Phenom II 1 CP 3000 9462 2250 7615 2253 Core i7 930 **** 9826 1662 8684 1661 Core i7 860 #### 10094 1789 9978 1847 Core i7 3930K &&&& 13871 1960 11197 1972 Core i7 4820K $$$1 14136 1958 11867 1981 Core i7 4820K $$$2 14776 2006 11978 2014 Core i7 3930K OC 17269 2444 13877 2432 #### Rated as 2800 MHz but running at up to 3460 MHz using Turbo Boost **** Rated as 2800 MHz but running at up to 3066 MHz using Turbo Boost @@@@ Rated as 1600 MHz running at up to 2300 MHz using Turbo Boost &&&& Rated as 3200 MHz but running at up to 3800 MHz, OC OverClocked ~4730 MHz $$$1 Rated as 3700 MHz but running at up to 3900 MHz, using Turbo Boost $$$2 Performance not Balanced Power Setting for 3900 MHz M = Mobile CPU To Start Dhry1 Dhry1 Dhry2 Dhry2 Opt NoOpt Opt NoOpt VAX VAX VAX VAX CPU MHz MIPS MIPS MIPS MIPS Later Results 32 and 64 Bit MS Compilers Pentium 4 32b1 1900 2613 1795 Athlon 64 32b1 2211 6104 3720 Athlon 64 64b1 2211 8668 5214 Athlon 64 64b2 2211 8549 4654 Core 2 Duo 32b1 2400 8094 5476 Core 2 Duo 64b1 2400 12600 8550 Core 2 Duo 64b2 2400 11726 6248 Core i7 64b1 &&&& 33048 18355 Core i7 64b2 &&&& 27873 15753 Core i7 32b1 $$$1 15470 10302 Core i7 64b1 $$$1 27113 15580 Core i7 64b2 $$$1 22362 13279 Core i7 32b1 $$$2 15587 10347 Core i7 64b1 $$$2 29291 15756 Core i7 64b2 $$$2 23652 13364 Phenom II 32b1 3000 9768 6006 Phenom II 64b1 3000 9862 6878 Phenom II 64b2 3000 11837 8006 b1 = 32 bit integers, b2 = 64 bit integers &&&& overclocked i7-3930K see above $$$1 Turbo Boost < 3900 MHz see above $$$2 Turbo Boost at 3900 MHz see above Later MS Compilers Version 18.00 Atom Z8300 32b1 1840 3044 Atom Z8300 64b1 1840 3201 Core 2 Mob 32b1 1830 4546 Core 2 Duo 32b1 2400 6587 Core 2 Duo 64b1 2400 5946 Core i7 32b1 $$$1 12090 Core i7 64b1 $$$1 11686 Phenom II 32b1 3000 7321 Phenom II 64b1 3000 8137 To Start ,B.32 Bit and 64 Bit Linux Results from Ubuntu GCC Dhry1 Dhry1 Dhry2 Dhry2 Opt NoOpt Opt NoOpt VAX VAX VAX VAX CPU OS MHz MIPS MIPS MIPS MIPS Atom N455 32b Ub 1666 5485 1198 2055 1194 Atom N455 64b Ub 1666 5926 1065 2704 1098 Core 2 Mob 32b Ub 1830 9876 2602 4833 2584 Core 2 Mob 64b Ub 1830 15382 2265 8241 2502 Athlon 64 32b Ub 2211 9034 2286 4580 2347 Athlon 64 64b Ub 2211 14783 2243 6873 2580 Core 2 Duo 32b Ub 2400 13599 3428 5852 3348 Core 2 Duo 64b Ub 2400 18738 3643 12265 3288 Phenom II 32b Ub 3000 13406 3368 6676 3470 Phenom II 64b Ub 3000 21996 3908 11982 3826 Phenom II 64b Fe 3000 21841 3882 12000 3798 Core i7 930 64b Ub **** 24396 5361 16435 5302 Core i7 4820K 32b Ub $$$1 29277 7108 16356 7478 Core i7 4820K 64b Ub $$$1 32659 8436 23607 8481 Ub = Ubuntu Linux, Fe = Fedora Linux **** Rated as 2800 MHz but running at up to 3066 MHz using Turbo Boost $$$1 Rated as 3700 MHz but running at up to 3900 MHz, using Turbo Boost To Start Android Results Compiled By Native Development Kit Also results for Raspberry Pi & Linux Opt NoOpt System ARM MHz Android Vax Vax MIPS MIPS T5 MIPS CPU 1000 4.0.1 56 E T1 926EJ 800 2.2 356 196 T2 v7-A9 800 2.3.4 962 458 P13 v7-A9 1200 4.1.2 1491 T7 v7-A9 1300a 4.1.2 1610 810 T4 v7-A9 1500a 4.0.3 1650 786 P11 v7-A9v3 1400 4.0.4 1937 866 T11*I v7-A15 2000b 4.2.2 2533 T11 v7-A15 2000b 4.2.2 3189 1504 T21*I QU-800 2150 4.4.3 3319 T21 QU-800 2150 4.4.3 3854 1628 A1*C Z3745 1866 4.4.2 1840 1310 A1*I Z3745 1866 4.4.2 2451 A1*I Z8300 1840 5.1.1 2430 ARM v8-A53 1300 5.0.2 1683 ARM*I v8-A53 1300 5.0.2 1423 ARM*I v8-A53 1300 5.1 1493 ARM*I v8-A53 1500 6.0.1 1649 R1=Atom Z8300 1840 6.0.1 2390 R2 Core i7 3900 6.0.1 10489 64 Bit Version ARM v8-A53*I 1300 5.0.2 2569 ARM v8-A53*I 1300 5.1 2658 R1=Atom Z8300 1840 6.0.1 3769 R2 Core i7 3900 6.0.1 17003 System - T = Tablet, P = Phone, E = Emulator? a running at 1500, b at 1700 *I Atom Native Intel/ARM version *C Atom using Intel to ARM conversion QU = Qualcomm CPU R1, R2 Android via REMIX for PC Raspberry Pi Linux ARM 1176 700 3.6.11 847 ARM 1176 1000 3.6.11 1226 Raspberry Pi 2 ARM V7A 900 3.18.5 1538 ARM v7A 1000 3.18.5 1694 gcc 4.8 ARM V7A 900 3.18.5 1667 ARM V7A 1000 3.18.5 1852 Raspberry Pi 3, 32 Bit ARM v8-A53 1200 4.1.19 2201 gcc 4.8 ARM v8-A53 1200 4.1.19 2469 Raspberry Pi 3, 64 Bit OpenSuse ARM v8-A53 1200 4.4.36 3536 Gentoo ARM v8-A53 1200 4.10.0 3475 NOTE: ARM's own results are much faster than these - different compiler and optimisation? To Start 16 Bit Results Dhry1 Dhry1 Dhry2 Dhry2 Opt NoOpt Opt NoOpt VAX VAX VAX VAX CPU MHz MIPS MIPS MIPS MIPS 80486 DX2 66 29 14 18 8 Pentium 100 89 41 78 42 Pentium Pro 200 176 95 164 94 Celeron M 1295 705 Pentium 4E 3000 754 Athlon 4 2080 1256 Core i7 4820K 3700 1832 OS/2 Results 80486 75 37 9 35 9 IBM 80486BL 100 54 12 41 12 80486 DX2 66 59 12 48 12 Cyrix P150 120 175 28 160 28 Pentium Pro 150 276 53 218 52 Pentium Pro 166 307 59 242 57 Pentium Pro 200 362 69 285 67 To Start

Roy Longbottom February 2017

The Internet Home for my PC Benchmarks is via the link
Roy Longbottom's PC Benchmark Collection