Virtual PC slowness

Discussion in 'Mac Apps and Mac App Store' started by FredAkbar, Jun 19, 2003.

  1. FredAkbar macrumors 6502a

    FredAkbar

    Joined:
    Jan 18, 2003
    Location:
    Santa Barbara, CA
    #1
    I've seen a variety of things on these forums about Virtual PC--some say it's quite speedy, but others (even those with fast computers and lots of memory) say it's horribly slow. For me, with VPC 6 running Win2k Pro , it's the latter (I have a 1 GHz iMac with 768 MB DDR RAM). My virtual Windows system runs like a 200 MHz Pentium 2 or somethin. What's up with that? Is there anything I can do to make it faster? I have looked in the VPC settings, and have given the virtual machine various amounts of memory.

    --Fred
     
  2. Pedro Estarque macrumors regular

    Joined:
    Dec 5, 2002
    #2
    if you are running OSX you could use thye unix command "nice" to increase processor priority.
    It made a huge diference in my iMac G3 500
     
  3. XnavxeMiyyep macrumors 65816

    XnavxeMiyyep

    Joined:
    Mar 27, 2003
    Location:
    Washington
    #3
    Wow. I don't know much about Unix commands, so how could you do this?
     
  4. FredAkbar thread starter macrumors 6502a

    FredAkbar

    Joined:
    Jan 18, 2003
    Location:
    Santa Barbara, CA
    #4
    Thanks, I forgot about that...though it doesn't seem to have made much of a difference. Do I have to quit and relaunch VPC (or at least the Windows system) or anything in order for renice to really take effect? I don't want to do that right now, because I'm installing something in Windows, but I'll check that later.

    --Fred
     
  5. Catfish_Man macrumors 68030

    Catfish_Man

    Joined:
    Sep 13, 2001
    Location:
    Portland, OR
    #5
    ok, open terminal (in the utilities folder) when you have Virtual PC open. Type "top -au" without the quotes and look for Virtual PC (if you can't find it do something processor intensive in VPC and it should pop to the top of the list). Note the number next to VPC in the PID column. Then type "q". Next type "sudo renice -20 the number you noted", and enter your administrator password when asked for it. This will set VPC to the maximum priority, making everything else slower, and VPC faster. I haven't seen much of a difference in most apps unless I'm doing something in the background.
     
  6. Pedro Estarque macrumors regular

    Joined:
    Dec 5, 2002
    #6
    You don't need to use the terminal. There are freeware and sharewares that do this kind of stuff through GUI.
    I know one named Nicer. Check versiontracker and you should find it.

    Maybe the difference isn't as noticible in faster macs, but in mine, specially screen redraw is much faster, which doesn't mean it is satisfatory in anyway, only that it is better then it was before.
     
  7. XnavxeMiyyep macrumors 65816

    XnavxeMiyyep

    Joined:
    Mar 27, 2003
    Location:
    Washington
    #7
    Would it make much difference in a Dual 867 G4?
     
  8. Pedro Estarque macrumors regular

    Joined:
    Dec 5, 2002
    #8
    Also notice that (at least in my mac ) VPC is actually a set of 3 processes that run whenn you launch that app. you should raise the priority of all 3 to get the speed boost
     
  9. Pedro Estarque macrumors regular

    Joined:
    Dec 5, 2002
    #9
    Don't know, couldn't heart trying. I heard VPC doesn't benefit much from the second proc in your mac due to badly written code. THAT would be a nice speed boost. Maybe RealPC's or MS's next version can help you lucky ones with dual PM.
     
  10. XnavxeMiyyep macrumors 65816

    XnavxeMiyyep

    Joined:
    Mar 27, 2003
    Location:
    Washington
    #10
    Speaking of RealPC, is that out for OS X yet, or still just OS 9?
     
  11. jimthorn macrumors 6502a

    jimthorn

    Joined:
    Apr 24, 2003
    Location:
    Huntington Beach, CA, USA
    #11
    Can I assume that this only works until you quit the app or shut down? On restart, you'd need to do these steps again, or write a script to do it again?
     
  12. Huked on Fonick macrumors 6502

    Joined:
    Jul 16, 2002
    Location:
    1 Loop
    #12
    VPC runs at about 5 mhz on my computer (800meg ibook 640 ram) so whoever said 200mhz thats really fast......
     
  13. FredAkbar thread starter macrumors 6502a

    FredAkbar

    Joined:
    Jan 18, 2003
    Location:
    Santa Barbara, CA
    #13
    Actually, I was underestimating--it was really around 530 MHz. And after I defragmented my PC's drive (I think that's all I did) it is now at around 725 MHz. It still seems to run like a snail, though.

    --Fred
     
  14. bradz_id macrumors member

    Joined:
    Nov 16, 2002
    Location:
    Tasmania, Australia
    #14
    Install the Virtual PC Additions from the extension looking icon on the bottom of a windowed VPC.
     
  15. actripxl macrumors 6502

    actripxl

    Joined:
    Aug 24, 2002
    Location:
    Chicago, IL
    #15
    diable the virtual memory in windows to make it run faster.
     

Share This Page