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AuthorTopic: Bogomips in AmigaOne Linux  (Read 2382 times)

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Offline cdfr

Re: Bogomips in AmigaOne Linux
« Reply #30 on: January 09, 2003, 07:39:02 PM »
Right, the Morphos version exists and is available for a limited number of betatesters.  ;-)
Benchmarking is very difficult because there are a lot of different things to test and different ways to do it. I remember that Bytemarks were always better for PPC and SPARC, that SPEC (sponsored by Intel) was better for Intel (how strange!) ...
It really depends what compiler your use, what optimization are done etc.
That's why fist you need to compare apples with apples: execute the same code in the same conditions.
For example I don't think that comparing a system speed and an emulated system speed specialy with JIT) make any sense to have an idea of general speed difference.
Even in general, you can not say system X is 4 X faster than system Y.
For what ? CPU intense stuff ? My CPU is idling 99% of the time anyway !
I remember that I had to do a search replace in a huge text file at work and that the only tool I had was MS word. It completely froze my computer for hours. I took the same file and did the search / replace on my amiga with CED and it was finished in a few minutes.
Who in the PC world could think that some people still use 50 Mhz machine to browse internet, do mail etc ?
What counts is the user experience on the machine. Does it do the job ? Is it responsive. Does it get me mad or not ?
BTW Natmeg is doing an excelent job. Amigamark is going to be THE Amiga benchmark.   :-D  
Benchmark are fun but never make any general statement after looking at a benchmark. For example look at the bogomips test and the G3/604 and then look at dhrystones. What does it tells you ?
 

Offline naTmeg

Re: Bogomips in AmigaOne Linux
« Reply #31 on: January 09, 2003, 08:24:31 PM »
to be exact here the routines used in the two version.
its a assembler code build-in in the c-source.
here the functions:


m68k:

static void delay(ULONG loops)
{
   __asm__ __volatile__ ("\n\tmovel %0,%/d0\n1:\tsubql #1,%/d0\n\t"
   "bpls 1b\n"
               : /*no outputs*/
               : "g" (loops)
               : "d0");

}


ppc:

static void delay(ULONG loops)
{
   __asm volatile ("cmpwi 0,%0,0\n\t"
                   "mtctr %0\n\t"
                   "beqlr\n\t"
                   ".loop: bdnz .loop"
                   :
                   : "r" (loops)
                   : "cc");
}


hope this is clear now :)

naTmeg,










 
 

Offline cdfr

Re: Bogomips in AmigaOne Linux
« Reply #32 on: January 09, 2003, 09:50:18 PM »
hum, it looks like the 604 results are comparable to what we get on Linux/Apus.
The G3 results are more than suspicious.  :-?
 

Offline Seehund

Re: Bogomips in AmigaOne Linux
« Reply #33 on: January 09, 2003, 11:06:12 PM »
Quote

lorddef wrote:
My Dual P100 system gets 492 bogomips, My AMD Athlon 1.4Ghz gets 5870 bogomips.


You got some super-CPUs there? :)
One P100 gets about 40 BogoMIPS, and my dual AthlonMP@1752MHz get 3500 BogoMIPS per CPU.

Check out the BogoMIPS ratings listed in the BogoMIPS mini-HOWTO.

I can't believe we're discussing busy-loop timings under Linux! :)
[color=0000FF]Maybe it\\\'s still possible to [/color]save AmigaOS [color=0000FF][/size][/color]  :rtfm:......
 

Offline Hammer

Re: Bogomips in AmigaOne Linux
« Reply #34 on: February 13, 2003, 10:36:27 PM »
Has any one compared JIT-68K speeds between  PPC-JIT-68K VS X86-JIT-68K?
AmigaForever 2016 with AmigaOS 4.1 FE, AMIDuOS\'s Android 5.01, MS Windows 10 Pro X64
Samsung ATIV Book 8 880Z5E laptop with touch screen.
CPU: Intel Core i7-3635QM, 2.4Ghz base, 3.4Ghz turbo.
RAM: 16 GB PC3-12800 (DDR3-1600)
GPU: AMD Radeon HD 8870M (OC) 2GB GDDR5 VRAM.
SSD: 512 GB Samsung 840
 

Offline Hammer

Re: Bogomips in AmigaOne Linux
« Reply #35 on: February 14, 2003, 04:46:45 AM »
Just a side note; my old AthlonXP1800+/WinXP-SP1**/JIT-WinUAE(0.8.22.R4, JIT-020/881) delivers ~725.2 Bogo  MIPS(via 68K Amiga Mark 2003 beta).

**with XP Pro's bloatware services turned on.
AmigaForever 2016 with AmigaOS 4.1 FE, AMIDuOS\'s Android 5.01, MS Windows 10 Pro X64
Samsung ATIV Book 8 880Z5E laptop with touch screen.
CPU: Intel Core i7-3635QM, 2.4Ghz base, 3.4Ghz turbo.
RAM: 16 GB PC3-12800 (DDR3-1600)
GPU: AMD Radeon HD 8870M (OC) 2GB GDDR5 VRAM.
SSD: 512 GB Samsung 840