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Apple Computing Products:
macOS - Notebook Hardware
slow MBP
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<blockquote data-quote="bobtomay" data-source="post: 1229900" data-attributes="member: 24160"><p>I am one of those that does indeed defrag my OS X drives. In my experience:</p><p></p><p>OS X does an exceptional job at defragmenting files on the fly. It's only downfall is really in keeping free space defragmented - it does nothing related to free space as it uses free space as needed to keep files defragmented.</p><p></p><p>There is certainly no reason in my experience that anyone using OS X should be defragging their drive once or twice a month unless you're keeping your system partition at less than 20% free space "and" are moving a bunch of large (2-4GB+) files on and off the drive continually.</p><p></p><p>The real fix for the above individual is get a larger system drive and keep that free space at 30-40% minimum (40% if you want to keep it running at best speed - I start noticing a slow down at 30% free space). I indeed move a lot of files on and off my drive and it's typically not until the free space hits around 50% fragmented that there is any noticeable depreciation in speed. I'm only needing to defrag once every 4-8 months in order to maintain my system speed.</p><p></p><p>For a lot of the typical users - my wife for example - she's only got a 120GB drive - 4 year old Mac - has 75% free space - there is absolutely no reason to defrag her machine. It would provide zero benefit that she would ever experience.</p></blockquote><p></p>
[QUOTE="bobtomay, post: 1229900, member: 24160"] I am one of those that does indeed defrag my OS X drives. In my experience: OS X does an exceptional job at defragmenting files on the fly. It's only downfall is really in keeping free space defragmented - it does nothing related to free space as it uses free space as needed to keep files defragmented. There is certainly no reason in my experience that anyone using OS X should be defragging their drive once or twice a month unless you're keeping your system partition at less than 20% free space "and" are moving a bunch of large (2-4GB+) files on and off the drive continually. The real fix for the above individual is get a larger system drive and keep that free space at 30-40% minimum (40% if you want to keep it running at best speed - I start noticing a slow down at 30% free space). I indeed move a lot of files on and off my drive and it's typically not until the free space hits around 50% fragmented that there is any noticeable depreciation in speed. I'm only needing to defrag once every 4-8 months in order to maintain my system speed. For a lot of the typical users - my wife for example - she's only got a 120GB drive - 4 year old Mac - has 75% free space - there is absolutely no reason to defrag her machine. It would provide zero benefit that she would ever experience. [/QUOTE]
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Apple Computing Products:
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slow MBP
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