6 Replies Latest reply: Sep 17, 2012 11:41 AM by violingrad19
violingrad19 Level 1 Level 1 (0 points)

My iMac is a couple of years old (I bought it one year ago refurbished) and I am running OS X 10.6.8. It is running so slowly and is severely impacting my ability to work on it; it never actually freezes, but the beachball spins for 10-20 seconds almost every time I click. The fans sound like the are running high when it is at its slowest, and when I don't hear the fans, it runs much faster. (But I don't know why/when the fans do or do not run high.)

 

I've done all the usual housekeeping: restarting, software update, resetting the SMC, turning up the fans with smcFanControl (it now runs around 36 degrees).

 

I've also installed Monolingual and deleted a bunch of the languages that I will never use, which was a suggestion I found to do online.

 

Does anyone have any ideas on what could be causing it to run so slowly?! It's incredibly frustrating!


iMac, Mac OS X (10.6.8)
  • 1. Re: My iMac is running extremely slowly
    AnaMusic Level 9 Level 9 (57,005 points)
  • 2. Re: My iMac is running extremely slowly
    Kappy Level 10 Level 10 (226,805 points)

    Things You Can Do To Keep Your Computer From Slowing Down

     

    If your computer seems to be running slower here are some things you can do:

     

    Boot into Safe Mode then repair your hard drive and permissions:

     

    Repair the Hard Drive and Permissions Pre-Lion

     

    Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.

     

    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

     

    Repair the Hard Drive - Lion

     

    Boot from your Lion Recovery HD. When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported, then click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.

     

    Boot to the Recovery HD:

     

    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.

     

    Restart your computer normally and see if this has helped any. Next do some maintenance:

     

    Suggestions for OS X Maintenance

     

    For situations Disk Utility cannot handle the best third-party utility is Disk Warrior;  DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible.

     

    OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep.  Dependence upon third-party utilities to run the periodic maintenance scripts was significantly reduced since Tiger.  These utilities have limited or no functionality with Snow Leopard or Lion and should not be installed.

     

    OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems. For more about malware see Macintosh Virus Guide.

     

    I would also recommend downloading a utility such as TinkerTool System, OnyX 2.4.3, or Cocktail 5.1.1 that you can use for periodic maintenance such as removing old log files and archives, clearing caches, etc.

     

    For emergency repairs install the freeware utility Applejack.  If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the command line.  Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard. There is no confirmation that this version also works with Lion.

     

    When you install any new system software or updates be sure to repair the hard drive and permissions beforehand.

     

    Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):

     

    Carbon Copy Cloner

    Data Backup

    Deja Vu

    SuperDuper!

    SyncTwoFolders

    Synk Pro

    Synk Standard

    Tri-Backup

     

    Visit The XLab FAQs and read the FAQs on maintenance, optimization, virus protection, and backup and restore.

     

    Additional suggestions will be found in Mac maintenance Quick Assist.

     

    Referenced software can be found at CNet Downloads or MacUpdate.

     

    Additional Hints

     

    Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity as free space.

     

    Add more RAM. If your computer has less than 2 GBs of RAM and you are using OS X Leopard or later, then you can do with more RAM. Snow Leopard and Lion work much better with 4 GBs of RAM than their system minimums. The more concurrent applications you tend to use the more RAM you should have.

     

    Always maintain at least 15 GBs or 10% of your hard drive's capacity as free space, whichever is greater. OS X is frequently accessing your hard drive, so providing adequate free space will keep things from slowing down.

     

    Check for applications that may be hogging the CPU:

     

    Open Activity Monitor in the Utilities folder.  Select All Processes from the Processes dropdown menu.  Click twice on the CPU% column header to display in descending order.  If you find a process using a large amount of CPU time, then select the process and click on the Quit icon in the toolbar.  Click on the Force Quit button to kill the process.  See if that helps.  Be sure to note the name of the runaway process so you can track down the cause of the problem.

     

    Often this problem occurs because of a corrupted cache or preferences file or an attempt to write to a corrupted log file.

  • 3. Re: My iMac is running extremely slowly
    WZZZ Level 6 Level 6 (12,225 points)

    Run the demo of SMART Utility to make sure the drive isn't failing.

     

    http://www.volitans-software.com/smart_utility.php

  • 4. Re: My iMac is running extremely slowly
    MadMacs0 Level 4 Level 4 (3,735 points)

    violingrad19 wrote:

     

    I've also installed Monolingual and deleted a bunch of the languages that I will never use, which was a suggestion I found to do online.

    Somebody seriously recommended this as a way to speed things up? I know it will save you a bit of hard drive space, but not enough to make much difference and it has been known to cripple some apps. I know they now whitelist a few of them, but I don't see how they can keep track of all such apps. Also be careful to not delete your keyboard from the input menu and with the architectures removal.

     

    Tell us what you find in following the last two suggestions Kappy made as well as WZZZ's suggestion and we might be able to add some suggestions.

  • 5. Re: My iMac is running extremely slowly
    Linc Davis Level 10 Level 10 (118,325 points)

    First, back up all data immediately, as your boot drive might be failing.

     

    Take these steps when you notice the problem. [Note: this comment was written for OS X 10.7 or later, and may need to be modified slightly for 10.6.]

     

    Step 1

     

    Launch the Activity Monitor application in any of the following ways:

     

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

     

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

     

    ☞ Open LaunchPad. Click Utilities, then Activity Monitor in the page that opens.

     

    Select the CPU tab of the Activity Monitor window.

     

    Select All Processes from the menu in the toolbar, if not already selected.

     

    Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.

     

    Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?

     

    Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)

     

    Step 2

     

    You must be logged in as an administrator to carry out this step.

     

    Launch the Console application in the same way as above. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.

     

    Post the 50 or so most recent messages in the log — the text, please, not a screenshot.

     

    When posting a log extract, be selective. Don't post more than is requested.

    PLEASE DO NOT INDISCRIMINATELY DUMP THOUSANDS OF LINES FROM THE LOG INTO A MESSAGE. If you do that, I will not respond.

    Important: Some personal information, such as your name, may appear in the log. Edit it out before posting.

  • 6. Re: My iMac is running extremely slowly
    violingrad19 Level 1 Level 1 (0 points)

    Thank you to everyone who responded! Turns out my hard drive IS failing, so I will have it replaced. I did back everything up yesterday onto a 500GB G Drive!