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Old 12 December 2015, 11:47   #6
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 19,518
Quote:
So we can expect another stable release next week?
Thats the plan.

Quote:
Originally Posted by Michael View Post
What is expected in turms of speed of ppc cpu emulations?

Is 604 code much faster then 603 cpu emulator code?

There is np easy way to benchmark things....
but from 'real life' Quake1 test I get the following odd results

Quake1 68k/060 320x240 - 167 FPS
Quake1 WOS/603 320x240 - 12 FPS
Quake1 OS4/604 320x240 - 37 FPS

I guess the 68k-PPC bridge emulation makes things a lot slower under WOS
however, the host cpu is only 40$ loaded here during emulation of 2 cpus
It is QEMU. I don't know. I only know that FPU is not that fast because it is using softfloat library, not host FPU.

If you want to benchmark CPU, use CPU only benchmark, not something that also uses display and sound. Then run some program that only tests display and so on to get any real useful results, to see if there are some real bottlenecks or not. Using as many as possible _simple_ benchmarks.

m68k/PPC thread syncronization can waste lots of time if both threads need to access IO addresses continuously. Only RAM can be thread-safe.

(Not really beta related, moving soon)
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