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Groups > comp.sys.mac.misc > #9280

Re: How much HD space needed for memory swapping

From Your Name <YourName@YourISP.com>
Newsgroups comp.sys.mac.misc
Subject Re: How much HD space needed for memory swapping
Date 2025-01-18 13:33 +1300
Organization A noiseless patient Spider
Message-ID <vmessa$b69b$1@dont-email.me> (permalink)
References <vmabdt$3dcgs$2@dont-email.me> <vmeib5$7ui0$1@dont-email.me> <vmej1l$81oa$2@dont-email.me>

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On 2025-01-17 21:45:25 +0000, Dudley Brooks said:
> On 1/17/25 1:33 PM, Your Name wrote:
>> On 2025-01-17 21:13:51 +0000, Dudley Brooks said:
>>> On 1/16/25 4:49 PM, Jolly Roger wrote:
>>>> On 2025-01-16, Dudley Brooks <dbrooks@runforyourlife.org> wrote:
>>>>> On 1/16/25 11:16 AM, Jolly Roger wrote:
>>>>>> On 2025-01-16, Dudley Brooks <dbrooks@runforyourlife.org> wrote:
>>>>>> 
>>>>>>> (I hope that "memory swapping" is the correct term.)
>>>>>>> 
>>>>>>> Model:    Late 2013 Macbook Pro
>>>>>>> OS:    OS X 10.13.6 High Sierra
>>>>>>> HD:    1 TB, 954.34 GB used, 44.27 GB available
>>>>>>> CPU:    2.6 GHz Intel
>>>>>>> Mem:    16 GB 1600 MHz DDR3
>>>>>>> 
>>>>>>> As you see, my HD is very full.
>>>>>>> 
>>>>>>> As it fills up, I have seen a big dropoff in function -- programs load
>>>>>>> much more slowly, can only have a few programs open at the same time,
>>>>>>> windows don't open at full size, etc.
>>>>>>> 
>>>>>>> I assume this is because of not enough swap space on the HD.
>>>>>>> 
>>>>>>> What is the recommended amount of HD space to keep free for good
>>>>>>> performance?
>>>>>> 
>>>>>> That would depend on how much RAM you actually use, but the general
>>>>>> recommendation is to keep 10-20% free on the startup drive, depending 
>>>>>> on how much your system swaps due to low memory conditions. You're way 
>>>>>> short of that 100 GB (10%).
>>>>> 
>>>>> OK, thanks!  Now I know what to aim for.  Luckily, it will not be too
>>>>> difficult to accomplish -- loads of stuff I can get rid of.
>>>> 
>>>> 🙂👍🏼
>>>> 
>>>>> Should I defrag afterwards?  Or does the OS (10.13.6 High Sierra) make
>>>>> it somehow unnecessarry
>>>> 
>>>> That's not something you need to do with flash storage (SSDs).
>>> 
>>> Ah!  Excellent!  Thanks!
>> 
>> The original post says "HD", as in hard drive, not SSD flash storage. 
>> As usual Jolly Roger didn't bother actually reading the question.
>> 
>> Having noted that, defragging isn't really neccessary on MacOS hard 
>> drives either.
> 
> My apologies -- it actually is an SSD.  I just have been using 
> computers for so long that I still say "HD" generically -- anything 
> that's not a floppy or a tape!

It's an easy mistake to make, especially as Apple kept on labelling the 
main storage drive "Macintosh HD" even long after they were switched 
over to using SSDs instead.

But whether you made a mistake or not, it was typed as HD and Jolly 
Roger replied about SSDs.



>>     Do Mac hard drives need to be defragmented?
>>     macOS does not include a built-in defragmentation tool
>>     because it is deemed unnecessary. macOS is designed to
>>     handle file fragmentation automatically, especially for
>>     small files. Using an external defragmentation tool on
>>     a Mac is not recommended.
>>     <https://www.crucial.com/articles/mac-users/how-to-defragment-a-mac

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Thread

How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-15 23:10 -0800
  Re: How much HD space needed for memory swapping Jolly Roger <jollyroger@pobox.com> - 2025-01-16 19:16 +0000
    Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-16 13:44 -0800
      Re: How much HD space needed for memory swapping Jolly Roger <jollyroger@pobox.com> - 2025-01-17 00:49 +0000
        Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-17 13:13 -0800
          Re: How much HD space needed for memory swapping Your Name <YourName@YourISP.com> - 2025-01-18 10:33 +1300
            Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-17 13:45 -0800
              Re: How much HD space needed for memory swapping Your Name <YourName@YourISP.com> - 2025-01-18 13:33 +1300
                Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-19 12:24 -0800
                Re: How much HD space needed for memory swapping Jolly Roger <jollyroger@pobox.com> - 2025-01-19 21:00 +0000
                Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-21 17:10 -0800
              Re: How much HD space needed for memory swapping Jolly Roger <jollyroger@pobox.com> - 2025-01-18 19:11 +0000
                Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-19 12:26 -0800
  Re: How much HD space needed for memory swapping Doc O'Leary ,   <droleary.usenet@2023.impossiblystupid.com> - 2025-01-17 15:29 +0000
    Re: How much HD space needed for memory swapping Dudley Brooks <dbrooks@runforyourlife.org> - 2025-01-17 13:55 -0800

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