Upgrade from SL > Poor performance.

Discussion in 'Mac OS X Lion (10.7)' started by ArmanUV, Jul 18, 2011.

  1. ArmanUV macrumors member

    Jul 15, 2010
    I had good experience with clean installs of lion developer previews on my 2009 iMac. When the GM came out, I upgraded my current Snow leopard partition. Needless to say, the performance is awful. I used Onyx and the Lion beta of Cocktail to run maintenance scripts, repair the startup disk and its permissions, clear the user and system caches and logs, repair launch services and prebindings and rebuild spotlight.
    I have iStat menus installed so I'm always monitoring cpu and ram usage. With 70% of ram usage and 10% of cpu usage, I can't watch a low resolution avi file and browse with safari at the same time. Finder is a nightmare and everything else is sluggish at best.

    I'm out of ideas. anybody has one?
  2. Steve's Barber macrumors 6502a

    Jul 5, 2011
    Clean install. You did this before why not this time?
  3. basher macrumors 6502


    May 27, 2011
    Glendale, AZ USA
    Could the problem not be with Lion and maybe with something else like Onyx?
  4. mfka macrumors regular


    Oct 20, 2009
    Check for the apps and extensions that are not supported in lion anymore,
    delete those and defragment your disk. That should do it.
    Of course back up first!
  5. T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

    Aug 5, 2001
    Mac OS X does automatical defragmentation.
  6. mfka macrumors regular


    Oct 20, 2009
    Not true. It is supposed to so for files up to 20 mb, but even files in that weight range are all around the place.
    It is really easy to check, just run one of your defragmenting tools and check it for yourself, you will be surprised how messy your hard drive is.
  7. PeterHolbrook macrumors 6502a

    Sep 23, 2009
    What you describe might be your case, but, quite certainly, isn't mine. You might want to check the particulars of your system.
  8. HawaiiMacAddict macrumors 6502a

    Dec 28, 2006
    On one of my Macs of course
    I second your observations, but I did a different type of "clean" install. Knowing that I have a bit of cruft on my machines, I first backed up my data, performed a clean install of Snowy, installed my apps, then performed the upgrade to Lion. Everything runs really smoothly, but some apps (like GeekTool, for example) are a bit quirky. Safari, no lie, DOES run a lot snappier, thanks to the new javascript engine IIRC. All I know is that it was like a night and day difference between Safari under Snowy and Safari under Lion. I really like Lion, and I think this will be a hugely successful OS for Apple.
  9. trent0n macrumors newbie

    Feb 21, 2011
    Lion runs like **** for me as well. iStat doesnt work at all, lion wont let me touch it, i cant even delete it from my dashboard, it just crashes if i scroll over it. i get lag when starting up on my lockscreen and random lag all over the place., chrome runs like **** it takes like 5 or 6 bounces to open, sometimes my dock sticks on the screen (i have it on autohide). I am experiencing SO many bugs! :( on an upgrade from SnowLeopard to the lion GM.

    I might as well do a clean install tomorrow when lion is released. I hope the bugs do not come back.

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