[TUHS] benchmark

[Luther Johnson via TUHS]

It sounds like you want something more synthetic, and compute-bound, 
perhaps like the EEMBC CoreMark, if dhrystone and whetstone seem too 
artificial. Now CoreMark wasn't around in the olden days of early UNIX 
on a PDP-11/70, but there are some FPGA projects out there that 
implement PDP-11's ... like wfjm's w11 ( https://wfjm.github.io/home/w11 
). You could get someone to run a benchmark on one of these FPGA 
11/70's, to get a baseline, then run it on your emulator, to get an idea 
of how where you are, compared to "real hardware" ... and the authors of 
FPGA PDP-11 implementations probably have a fair idea of where their 
implementations stand with respect to original 11's ... and there are 
still some PDP-11's out there, a few years ago there was a company that 
still built them, fairly similar to the originals ... anyhow just some 
ideas to chew on ...

On 02/17/2026 11:42 PM, Folkert van Heusden via TUHS wrote:
> Hi,
>
> Yes, but I wanted to solely test the cpu and also be independent from 
> an OS, so bare metal. So that's why I made my version.
>
> I also doubt that most of the benchmarks mentioned there will run on a 
> regular pdp11?
>
> regards
>
> On 2026-02-18 05:43, Clem Cole wrote:
>
>> The SPEC suite is well regarded and there are many results available 
>> on the main website. However the complete suite costs money. But some 
>> parts are FOSS and available at https://spec.cs.miami.edu/sources/
>>
>> Larry's lmbench https://lmbench.sourceforge.net/whatis_lmbench.html 
>> Is well known and a lot more drystone useful than simple things like 
>> drystone.
>>
>> Some others to consider are UnixBench, Bonnie++, foo, iozone. These 
>> tools measure metrics like context switching, process creation, file 
>> system throughput, and data transfer rates.
>> Jetstor +4
>>
>> * System & CPU Benchmarks:
>>
>> * UnixBench: A classic benchmark for testing CPU, memory, and file 
>> system performance.
>> * Phoronix Test Suite: An comprehensive, open-source testing and 
>> benchmarking platform for Linux and other operating systems.
>> * Hardinfo: Provides detailed system information and basic benchmarks.
>> * Dhrystone/Whetstone: Tests for integer and floating-point CPU 
>> performance.
>>
>> * Disk I/O & Filesystem Benchmarks:
>>
>> * Bonnie++: Tests file system performance, such as file creation and 
>> deletion.
>> * IOzone: Measures filesystem performance across various operations, 
>> including read/write speeds.
>> * fio: A flexible tool for stress-testing storage, often used for 
>> benchmarking SSDs and virtual hardware.
>>
>> * Networking & Other Benchmarks:
>>
>> * Iperf/Netpipe: Often used within clusters to measure network 
>> throughput.
>> * AIM7: Used to measure the performance of multiuser/shared systems.
>>
>> One other thought. You might want to try to run whichever suite you 
>> pick against a known baseline of real hardware.  I believe SDF-ICM 
>> has Miss Piggy available again on the Internet. This system is an 
>> 11/70 that was the original development system at Microsoft, but I'm 
>> not sure what OS they have running on it.
>>
>> Sent from a handheld expect more typos than usual
>>
>> On Tue, Feb 17, 2026 at 3:38 PM Folkert van Heusden via TUHS 
>> <tuhs at tuhs.org> wrote:
>>
>>> Hello,
>>>
>>> I wrote a PDP11/70 emulator that I would like to know the relative 
>>> speed
>>> (relative to a real PDP11) of.
>>>
>>> For that I wrote a benchmark that only (crudely) tests the 
>>> CPU-speed: no
>>> i/o (only when it is finished), no mmu.
>>>
>>> Anyone willing to give it a try? I tested it on my own emulator and on
>>> simh.
>>>
>>> https://komputilo.nl/emulation/PDP-11/benchmark/
>>>
>>> -- 
>>> www.vanheusden.com [1] [1]
>>>
>>> Links:
>>> ------
>>> [1] http://www.vanheusden.com
>