Thank you Ronni. I did run through your other suggestions first. I have just carried out the Command+R sequence. Now will give it a few start ups before I notice a difference. Trouble is that the slow down is intermittent so will have to wait and see.
But I will certainly let you know ! > On 2 Mar 2017, at 10:00 am, Ronni Brown <[email protected]> wrote: > > Hi Stephen, > > You could have a faulty Memory Module if the Memory Test keeps cancelling. > But, first try booting into Recovery Disk Mode and use Disk Utility to Repair > the Drive. > > 1. Hold down Command+R keys at startup until the Apple logo appears to see the > emergency mode. > A few moments later, you’ll see an macOS Utilities window that tells you > you’re using macOS Recovery > > 2. Open Disk Utility > In the list on the left , select your startup volume (if it’s not already > selected, which it most likely is). > Note: that volume names are indented underneath the names of the physical > devices on which they reside. > > 3. Click the First Aid button on the toolbar, and then click Run. > Disk Utility examines your disk and attempts to repair it if necessary. > > 4. When the repair is finished, click Done and quit Disk Utility. > > Then startup normally. > Let me know Disk Utility's result please. > > Also did you complete the ‘few other suggestions' I mentioned in my previous > reply? > > Regards, > Ronni > >> On 2 Mar 2017, at 8:34 am, Stephen Chape <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hi Ronni. >> I left TechTool Pro 9 running all night on Check Computer. >> Everything except Memory checked out OK, which said “cancelled”. >> >> So I ran memory Check again. >> Got “cancelled” two more times. >> But on third re-run got a brief “passed” banner in top right of screen, >> followed by “cancelled” >> >> Then (although I believe it is no longer necessary) I ran Repair Disk >> Permissions. >> That took much longer than it used to, but it also came up OK. >> >> >> >>> On 1 Mar 2017, at 5:55 am, Ronni Brown <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Hi Stephen, >>> >>> Yes, if you have TechTool Pro 8 definitely run it to test your Mac! >>> >>> The best way is to start with Check Computer to perform a complete >>> diagnostic check of you Mac and hard drives. With a single click of your >>> mouse, it begins a SMART Check of the hard drive to detect impending drive >>> failure, a RAM test, analysis of disk directories and more. >>> If problems are found, advice is provided on how to proceed to repair the >>> problem. >>> >>> Its a good idea to use Check Computer regularly as a part of your >>> preventive maintenance program. >>> Because data changes so frequently, it can sometimes get scrambled which is >>> why it's important to be able to test drives for problems and then repair >>> them. >>> Unfortunately, if something is physically wrong with the drive, it will >>> need to be backed up and replaced, so the sooner this type of damage is >>> detected, the fewer files will be lost. >>> >>> Most drive problems, however, result from data being in the wrong place, >>> and can be repaired using Techtool Pro’s Volume Rebuild tool. >>> >>> Let us know the results from TechTool Pro. >>> — >>> A few other suggestions which might be helpful. >>> Your Mac is abnormally Slow - Speed up your Mac >>> >>> First Use Activity Monitor: Sometimes a rogue program can start chewing up >>> RAM or CPU cycles and not playing nice with others. If this happens, your >>> whole Mac can slow down. To find out what’s happening behind the scenes, >>> turn to Apple’s Activity Monitor. >>> Among the many things Activity Monitor can show is which apps (even ones >>> not normally visible) are using the most CPU power, RAM, and other system >>> resources. >>> First check the CPU category, which shows the amount of processor power >>> being devoted to various processes. You can sort and filter what you see in >>> Activity Monitor in various ways. I click the % CPU column header to >>> display processes in order of their CPU usage. >>> >>> Don’t jump to hasty conclusions based on what you see in Activity Monitor. >>> The fact that a process is using a lot of CPU power or RAM for a while >>> isn’t necessarily a problem, but it can be useful for identifying certain >>> issues. For example, if you notice that a background app you installed and >>> then forgot about is being a CPU or RAM hog, consider checking for an >>> update or uninstalling it. >>> >>> Check Free Disk Space: macOS needs plenty of room on your startup volume >>> for things like virtual memory swap files and software updates, and all >>> sorts of bad things can happen if you have too little. >>> >>> A few “quick fix” steps to take that can solve common performance problems: >>> >>> 1. Restart your Mac. After restarting, you may find that your Mac runs more >>> slowly the longer you use it. If so, continue with one or more of the >>> following steps. >>> >>> 2. Quit inactive apps. You may want to keep some apps, like your email >>> client, open all day. But anything that’s running in the background can >>> drag your CPU down. (Some apps are kinder than others about CPU usage when >>> they’re in the background; consult Activity Monitor to find out which ones >>> are using the most CPU.) >>> >>> 3. Prune login items. Once you’ve quit some background apps, you need to >>> make sure they don’t run automatically the next time you log in: >>> Go to System Preferences -> Users & Groups -> Login Items and locate any >>> items in the list you don’t need to open when you log in. Select each one >>> and click the minus [-] button. >>> >>> Note: Several other mechanisms exist to launch background processes, but >>> Suffice it to say that if an app includes a problematic background process, >>> uninstalling that entire app is usually the best and most reliable solution. >>> >>> 4. Log out of other accounts. If you use Fast User Switching, other >>> logged-in accounts may be draining system resources. Switch to another >>> account using the Fast User Switching menu in the menu bar, log out, and >>> repeat this with any additional accounts except your own. >>> >>> 5. Reset the SMC. In certain cases resetting the SMC can perk up an >>> otherwise slow Mac. >>> Reset instructions vary from one Mac to the next; see Apple’s support page >>> “Reset the System Management Controller (SMC) on your Mac” at >>> <https://support.apple.com/en-us/HT201295 >>> <https://support.apple.com/en-us/HT201295>> for details. >>> >>> Cheers, >>> Ronni >>> >>> 13-inch MacBook Air (April 2014) >>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz >>> 8GB 1600MHz LPDDR3 SDRAM >>> 512GB PCIe-based Flash Storage >>> >>> macOS Sierra 10.12.3 >>> >>>> On 28 Feb 2017, at 11:12 pm, Stephen Chape <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> >>>> Just wondering. >>>> Is there anything I could use in TechTool Pro to run checks ? >>>> I have that installed. >>>> >>>>> On 28 Feb 2017, at 11:12 am, Ronda Brown <[email protected] >>>>> <mailto:[email protected]>> wrote: >>>>> >>>>> Hi Stephen, >>>>> >>>>> Before we suggest other possibilities for Slow performance on your iMac. >>>>> >>>>> Did you uninstall Net Barrier & Intego Virus Barrier correctly? >>>>> To properly uninstall your Intego software it is important that you use >>>>> the latest Installer for your software. >>>>> >>>>> "NOTE: If you have already tried to manually uninstall portions of Intego >>>>> software, this will lead to a partial uninstall, even if you used Finder >>>>> or Spotlight search to locate Intego files. In this case, you will need >>>>> to first reinstall Intego software before being able to proceed to a >>>>> clean and complete uninstall." >>>>> >>>>> https://support.intego.com/hc/en-us/articles/207117548-How-to-Uninstall-Intego-Products >>>>> >>>>> <https://support.intego.com/hc/en-us/articles/207117548-How-to-Uninstall-Intego-Products> >>>>> >>>>> Cheers, >>>>> Ronni >>>>> Sent from Ronni's iPad4 >>>>> >>>>> >>>>> On 28 Feb 2017, at 9:44 am, Stephen Chape <[email protected] >>>>> <mailto:[email protected]>> wrote: >>>>> >>>>>> That’s what puzzles me Peter. >>>>>> I only use it for Excel, Word and PDF files. >>>>>> My total use is 2.6 GB of my free 5 GB. >>>>>> >>>>>> >>>>>>> On 28 Feb 2017, at 7:24 am, Peter Hinchliffe <[email protected] >>>>>>> <mailto:[email protected]>> wrote: >>>>>>> >>>>>>> >>>>>>>> On 27 Feb 2017, at 11:06 pm, Stephen Chape <[email protected] >>>>>>>> <mailto:[email protected]>> wrote: >>>>>>>> >>>>>>>> Every so often my iMac slows down considerably. >>>>>>>> I can hear the HD humming away but I have no idea what it is doing. >>>>>>>> It seems to happen more often just after start up, but not always. >>>>>>>> Sometimes everything grinds almost to a halt and I have to simply sit >>>>>>>> and wait. >>>>>>>> >>>>>>>> A couple of weeks ago I uninstalled Intego Net Barrier & Intego Virus >>>>>>>> Barrier thinking they were the cause. >>>>>>>> However it happened again yesterday several times. >>>>>>>> But it has not happened today. >>>>>>>> >>>>>>>> I have checked Activity Monitor and noticed that DropBox seems very >>>>>>>> prominent a lot of the time. >>>>>>>> There are quite a few websites claiming that DropBox can slow a Mac >>>>>>>> down. >>>>>>>> I am not convinced that DropBox is the culprit though because it is so >>>>>>>> popular and well respected. >>>>>>>> >>>>>>>> Any ideas please folks ? >>>>>>>> >>>>>>>> iMac 21.5 inch Late 2012. >>>>>>>> i7 processor 3.1GHz >>>>>>>> 16GB RAM >>>>>>>> Latest Sierra macOS >>>>>>>> >>>>>>>> >>>>>>>> Regards, >>>>>>>> Stephen Chape >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> Dropbox could well be involved, depending on what you have stored >>>>>>> there. Just as an example, Dropbox has the annoying habit of asking you >>>>>>> if you want to store your photos there, every time you attach a mobile >>>>>>> device or an SD card. A friend of mine brought her work’s network to >>>>>>> its knees after unwittingly agreeing to this, at which point Dropbox >>>>>>> commenced syncing over 1200 photos to its servers. The activity >>>>>>> saturated their little wireless router, rendering the network virtually >>>>>>> unusable while her computer was on. >>>>>>> >>>>>>> I’m not saying this is necessarily the problem in your case, but it >>>>>>> would be instructive to have a look at just what you have in your >>>>>>> Dropbox folder. Dropbox is certainly a safe, reliable service, but like >>>>>>> everything it does need a little care and attention. I make sure I only >>>>>>> use it for smallish files. The really important stuff I keep at home. >>>>>>> >>>>>>> Peter Hinchliffe Apwin Computer Services >>>>>>> FileMaker Pro Solutions Developer >>>>>>> Perth, Western Australia >>>>>>> Phone (618) 9332 6482 Mob 0403 046 948 >>>>>>> -------------------------------------------------------------------- >>>>>>> Mac because I prefer it -- Windows because I have to. >>> > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> Regards, Stephen Chape
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