iMac overnight - sleep? will maintenace scripts run? turning off display?

Discussion in 'iMac' started by Sean Dempsey, Aug 17, 2007.

  1. Sean Dempsey macrumors 68000

    Sean Dempsey

    Aug 7, 2006
    Never had an imac before... I usually turn off the display on my computers and leave them on overnight, but on the imac, i am not sure I can do that.

    Is it kosher to leave the imac on 24/7? or should I sleep it at night to cut down on heat production inside the case? And if I do sleep it, will the maintenance scripts still run, like wake the computer and run?
  2. swiftaw macrumors 603


    Jan 31, 2005
    Omaha, NE, USA
    No, maintenance scripts will not run if it's asleep.
  3. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
  4. CalfCanuck macrumors 6502a

    Nov 17, 2003
    Try the utility "Main Menu" - I find it's great for this.
  5. risc macrumors 68030


    Jul 23, 2004
    Melbourne, Australia
    Launchd which handles the maintenance scripts will run them when the computer comes out of sleep. As for leaving the machine on 24/7 sure you can & yes you can just let the display sleep and have the computer still on.
  6. Sean Dempsey thread starter macrumors 68000

    Sean Dempsey

    Aug 7, 2006
    how do I sleep the display manually so I can just go to bed?
  7. Gosh macrumors 6502

    Aug 14, 2006
  8. Macky-Mac macrumors 68030


    May 18, 2004
    or you could turn the computer off ?
  9. Gosh macrumors 6502

    Aug 14, 2006
    Mac's hate being turned off, best kept on 24/7 except for a thunder storm! But let it sleep when you are - set it up: system preferences - energy saver - sleep and/or schedule (auto wake and sleep times).

    But if it's not running in the early hours - you need a maintenance utility as suggested before.
  10. Macky-Mac macrumors 68030


    May 18, 2004
    nah, Macs don't mind being turned off at all. If somebody is worried about those maintenance routines, they can leave the computer on overnight once in a while. The "necessity" of those routines is greatly overstated....Apple doesn't even bother to mention it in their user manuals
  11. togermano macrumors regular

    Aug 10, 2007
  12. MacUserSince87 macrumors member

    Aug 18, 2007
    Northern Virginia, USA
    Unix systems are very anal retentive about tracking activity and errors. If you open up the console application and click the logs icon you will see what I mean. The logs are created and archived on daily (at 3:15 AM), weekly, and monthly schedules, with the oldest log archive deleted. Presumably some ubergeek actually understands what the hell they mean but for the rest of us mere mortals its simply a waste of disk space.

    As for turning off the machine, I only ever turn mine off during severe storms or when I'm on vacation.
  13. rediffusion macrumors regular


    Jun 26, 2006
    Fairfield, CT
    So let's get this straight. It is possible for the screen to sleep while computer is still running? Is that right?
    I currently use a G4 PowerMac and often leave it running overnight whilst downloading large files. I just turn the screen off. Is it possible to do this with an iMac?
  14. Sean Dempsey thread starter macrumors 68000

    Sean Dempsey

    Aug 7, 2006
    you can set the display to sleep after as little as 1 minute. I have now set mine to sleep after 10 minutes.

    I don't really see a reason to shut it down, ever. I have never really shut off my computers, but it wasn't until I had the iMac that I realized I can't just click the screen off and walk away. There are those programs that will sleep the display instantly though, so that works.
  15. CBAviator macrumors 6502

    Jun 10, 2007
    Someone posted this link in another topic about sleeping the iMac. I haven't tried it out yet since my iMac doesn't arrive until Monday, but it might be worth having a look at it.

    Sleep Widget
  16. ryan2385 macrumors newbie

    Aug 18, 2007
    you can...just press the power button as opposed to holding it to put it to sleep on command (without the timer).
  17. BennyK macrumors 6502

    Sep 14, 2004
    Appleton, WI
  18. Sean Dempsey thread starter macrumors 68000

    Sean Dempsey

    Aug 7, 2006

    yes it comes highly recommended in the mac community.
  19. yatz macrumors newbie

    Oct 30, 2008
    If you open the Expose/Spaces Preference pane from within System Preferences. Select the Expose tab, it will give you options for 'active screen corners'. Using the drop down menu you can choose 'Sleep Display'. Now when you move your mouse to that corner the display will sleep!!
  20. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    I always turn off my computers overnight and usually when I don't use them for 5 hours. A year ago I didn't turn it off and it was much slower than now when I do. Macs are very fast to start up so turn it off. I can't understand why people leaves computer on sleep mode, I only use it if I come back in few hours.
  21. numbersyx macrumors 65816


    Sep 29, 2006
    Excellent programme and does far more than just run maintainence scripts manually.
  22. bassanoclapper macrumors 6502


    Mar 4, 2008
    CMD-Shift-Eject will turn off the display or you can set up a Hot Corner to activate it with the mouse
  23. JayLenochiniMac macrumors G5

    Nov 7, 2007
    New Sanfrakota
    In Leopard, they'll run when it wakes from sleep.

    In Tiger, launchd doesn't operate as intended and it's best to use a program such as macjanitor, onyx, etc. to run the scripts manually.
  24. beginnersview macrumors member


    Feb 21, 2006
    SF Bay area
    MacJanitor runs the three (daily, weekly, monthly) maintenance scripts - and is great, free, simple to use and returns a list as it accomplishes its tasks. Highly recommended. Though, you do need to remember to actually run the program. ;)

    Onyx, while I use and find it also good, has its default cleaning settings rather too aggressive for my taste, so I do not recommend Onyx for non-tech types.

    Macaroni (Atomic Bird) is what I install and recommend for those non-tech users who just want an app to take care of those tasks without having to worry about it again. Very low cost and reliable.

    (I've used all of these for years, and there are other apps as well...)

    Re. Sleep vs Off --
    I do not agree with the suggestions that you leave computers on all the time and assume they'll be fine.
    A, Off saves electricity -- sleep and hibernation mode continue to draw power.
    B, in my (decades) of computer experience, most computers (from Macs, Windows, Unix, servers) work better if they have an occasional reboot -- once a week or so in general in my experience.
    Reason: there are log files, cache files, work and temporary files that don't really get cleaned/flushed, purged and/or rebuilt till the computer is restarted.
    So forcing the computer to slog through those ever larger and stuffed files with never a rest-cleanup break (without a reboot) is just going to result in various areas of the computer getting gunked up till things start to noticeably act weird. (not getting too technical about it ... ;) )

    P.S. a good reference article on the sleep/vs off can be found at:
  25. pt0016 macrumors regular


    Jul 9, 2010
    Sorry bud, but it's Control Shift Eject.

    Control Shift Eject will sleep the screen, and it is fine to leave Mac's on 24/7, without heating issues. I do it all the time. Maintenance scripts won't run when the computer is asleep, but there are also third party apps, such as MacJanitor, which can do them when it suits you best.

    Don't worry, you wont somehow ruin your new iMac by leaving it on, unless there is a power cut, or surge. :apple:

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