Any tips to gain some performance?

About SheepShaver, a PPC Mac emulator for Windows, MacOS X, and Linux that can run System 7.5.3 to MacOS 9.0.4.

Moderators: Cat_7, Ronald P. Regensburg, ClockWise

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Seldane
Space Cadet
Posts: 2
Joined: Sat Apr 15, 2006 11:37 pm

Any tips to gain some performance?

Post by Seldane »

I'm getting really poor performance in Sheepshaver. My system specs are as follows:

AMD Athlon XP 2600+ (@2.11GHz)
512MB RAM (@~280MHz)
Geforce 4 MX440 (64MB RAM)
Windows XP Media Center Edition 2005 (SP2)

I'm running Mac OS 9.0. This is my preferences file. Any suggestions for improvements?

Code: Select all

nosound false
nogui true
noclipconversion true
ignoresegv false
idlewait false
seriala com1
serialb com2
nonet false
jit true
jit68k true
frameskip 4
ramsize 134217728
rom c:\sheepshaver\16.rom
windowmodes 3
screenmodes 63
gfxaccel true
disk c:\sheepshaver\macintosh_hd.dsk
disk C:\Program Files\BasiliskII-0.9.JIT-2.win32\Macintosh_HD.hfv
nocdrom true
bootdrive 0
bootdriver 0
pollmedia true
enableextfs false
debugextfs false
extdrives C
keyboardtype 5
keycodes false
mousewheelmode 1
mousewheellines 1
I would like to know what JIT and JIT68k is, they appear to improve performance quite a bit.

What's "Ignore Segv", "Idle wait", "Disable GUI" and "Disable Clip Conversion"?

Any answer would be highly appreciated.
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Cat_7
Expert User
Posts: 6177
Joined: Fri Feb 13, 2004 8:59 am
Location: Sittard, The Netherlands

Post by Cat_7 »

Hi

Most of your questions are answered here:
http://www.gibix.net/dokuwiki/en:projec ... ation_file

To gain more speed:
-you could try to set frameskip to a higher number, as it allows for a smaller screen refreshing rate.
(60 divided by what you enter)
-Also, disabling the jit68k might help.

If you are comparing SheepShaver to BasiliskII then SheepShaver is slow. Emulation a PPC processor is al lot more work then emulation a 68K processor.

Best wishes,
Cat_7
kikkoman
Master Emulator
Posts: 312
Joined: Fri Apr 01, 2005 7:08 am
Location: California, USA

Post by kikkoman »

Cat_7 wrote:Emulation a PPC processor is al lot more work then emulation a 68K processor.
Emulating a PPC on even an 800MHz Athlon (from the year 2000) that's been maxed out (512MB ram, GeForce MX 440; AGP 8x graphics card on an AGP 2x/4x mobo) yields performance which still feels a HELL of a lot faster than compared to a stock PowerMac 6100.

If you've never used a stock 6100, then you don't know what 'slow' is..... (with respect to Macs).....(386's and 486's don't count) :mrgreen:

(dare i say, even a Pentium 1 was faster than the 6100) 8O
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Cat_7
Expert User
Posts: 6177
Joined: Fri Feb 13, 2004 8:59 am
Location: Sittard, The Netherlands

Post by Cat_7 »

Yes,

I know what you mean. I've still got a 4400/200 and a 6400/200 machine here.... and a G3/266 for OSX 10.3.9 (with xpostfacto) :lol:

Cat_7
xyrx
Student Driver
Posts: 19
Joined: Mon Mar 06, 2006 11:57 pm

Post by xyrx »

I've got both of you beat. Our organization still has 2 Centris 610's in working condition, running OS 8.1 . I believe those are 40 Mhz machines?

... and please, contain your laughter. :lol:
conehead
Space Cadet
Posts: 5
Joined: Tue Aug 01, 2006 10:20 pm

Speed ideas

Post by conehead »

Try turning off Apple Menu Options. -- I've heard this has issues anyway.

I turn off nearly everything in the extensions manager until things stop working then turn them back on....

The system may be hauling a lot of excess baggage.

Helped in my case.

-Tom
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