What is the Mac swapfile? Is it important? Can you delete it? We'll walk you through this mysterious Mac file and what you can do about it.
If you've even run out of disk space on your Mac, you've probably sat and taken some time to look and see what's eating up all this space (pro tip: it's easy to forget how many files you move to the Mac Trash folder; the first thing you should do when you run out of space is right-click on the Trash icon on the dock and select Empty Trash).
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You might have run across something called swap, or a swapfile. It can be difficult to understand just what these files are, and whether you can manage to do without them, especially since they seem to just sit there and take up space; sometimes they take up quite a lot of space indeed.
Mac OS X video tutorial i18n subtitles project Click here to edit contents of this page. Click here to toggle editing of individual sections of the page (if possible). As I said, running the Django utilities works just fine on Mac OS X and Windows 10. Getting Django installed on Arch Linux ARM doesn't work, either as a pacman package or via pip. There is no package for ARM Arch, and even though the pip install seems to work, trying to create a default site with django-admin on Arch ARM fails, with django. Nectar 3, the most sophisticated set of tools designed for vocal production.Address every part of your vocal chain and get professional-sounding vocals in seconds with new machine learning features, stunning visualizations, and more.
What is the Mac swapfile?
Before we delve into what the swapfile is, we have to talk about swapping in the context of how your computer works. When you run a program on your Mac, it gets loaded into your memory (RAM). You have a much smaller amount of RAM than you do storage on your SSD.
Occasionally, if you're doing something that requires a lot of memory, you'll come up against some of the limits that come with having limited RAM. Enter paging. Paging is what we call using your storage drive as memory. It's all done automatically by your computer, so you never tend to notice when it happens. While the terms originally meant something different, these days paging and swapping are largely synonymous.
When you write something to your disk, it isn't always written in contiguous stretches of storage; instead it might be written in a number of places, wherever your Mac (PCs do this, too) finds an open spot.
In order for swapping to work, your Mac usually needs one of those contiguous stretches, which can be difficult to find on a drive as it increasingly fills up with data. https://downloadpapa.mystrikingly.com/blog/de-mambo-mac-os. To mitigate this, OS X will generate a number of these swapfiles so that it can write (or page, or swap) to them whenever it needs them.
You can find them by navigating to an arcane folder deep within the bowels of your Mac. Just click on an open part of your desktop and mouse up to the bar at the top of your screen. Click on Go, and in the drop-down menu, click on Go to Folder.
A box will appear with an address bar in it; you'll want to copy and paste the following location into it: /private/var/vm/ and hit enter. Finder will pop up with a new window listing the swapfiles your Mac currently has active.
How many files appear depend on a number of factors: how much and how often the Mac has needed to swap to your storage drive (which itself will depend on how much memory you have and how many programs you use that may have memory leaks). For reference, the above swapfiles were generated on a Macbook Pro with 16GB of RAM; it's gone around ten days since it was last rebooted.
Can you delete Mac swapfiles?
Yes, you can delete them. You can even tell your Mac to never swap again. But you shouldn't. Even on systems that have a lot of memory, your Mac might find a need to swap to its storage space instead of use its primary memory, or RAM.
If you delete your swapfiles, you might cause your system to crash, as it's possible that your Mac is using one of them right as you delete it. The same goes for whether you should disable the ability for your Mac to use swapfiles in the first place – the best result is that you won't notice a difference, and it's more likely to make your Mac increasingly unstable.
If you really need to free up some space taken up by your Mac's swapfiles, there's an easy and simple fix: just reboot your Mac. Shut it down and restart it, and then check your swapfile directory again – they should either be gone or substantially reduced in size.
Chances are good that on a new Mac you're unlikely to run into issues where your swap is seriously impacting how much free space you have. Should you keep running into an issue, however, take a look at the apps you run on a regular basis, and try playing around with them one at a time. You might find that one app has a memory leak, and by rebooting after use or finding an alternative app, you can avoid the big swapfile issue altogether!
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I have been wrestling recently with a series of self-imposed requirements that sprang from two personal needs; the first being the development of 'sane' native tools and libraries for manipulating Raspberry Pi 3 built-in peripherals (GPIO being at the top of my list), and the second being a way to find a common language and framework that would work across multiple operating systems, those operating systems being Arch Linux ARM, Mac OS X, and Windows 10. And a web framework would be really nice to have because I'm really getting tired of having to use ssh all the time.
So I did a bit of research and decided to focus on Python, specifically version 3.5 and later. That version of Python is available across all those platforms, and appears to work equally well across them. That means that trivial and not-so-trivial Python applications that aren't platform specific work equally well across all three. That means I can do a good deal of work on either my Samsung running Windows 10 or my MBP, which includes debugging. I would then transfer the code over to the RPi3 and do final integration there.
The problem I ran into was the choice of a Python web framework. For reasons I won't go into here I decided to install and learn how to use Django. I've successfully followed the getting started tutorials on both the MBP and the Samsung. On the MBP I've used Homebrew to install a number of up-to-date software tools, specifically Python 3.5, while on Windows I downloaded and installed Python 3.5 from the Python site. The only comments I have to make about installing Python on Windows 10 are these:
- Install Python at the root of the C: drive (i.e. C:Python3.5, for example). This makes the path to Python a lot shorter than where the default is, somewhere in your private user area.
- Assuming you installed Python in C:Python3.5 (for example) you should also add the Python Scripts folder to the path, i.e. C:Python3.5Scripts. This will put pip and django-admin in the path and make the instructions for using both the same as under Linux and Mac OS X. I don't know why the tutorial instructions didn't point this out.
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As I said, running the Django utilities works just fine on Mac OS X and Windows 10. Getting Django installed on Arch Linux ARM doesn't work, either as a pacman package or via pip. There is no package for ARM Arch, and even though the pip install seems to work, trying to create a default site with django-admin on Arch ARM fails, with django-admin complaining there is no django.core. This makes the second major framework failure I've run into under Arch ARM, the first being the failure of Express under Node.js. The Express failure was particularly annoying, as it worked about a year ago when I was investigating Express and Node.js on the Raspberry Pi 2. If anything, these failures have proven that the Raspberry Pi 3, at least under Arch Linux ARM, is not the full first-class client that regular installations are.
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I suppose I could be a hero (to someone) if I could find and fix the problems I've run into on the Raspberry Pi 3, but I don't feel particularly heroic. I'e gone down multiple paths now with trying to build a full stack of software with a web front end on the RPi 3, and it's not gone well. One reason for doing the same types of activities on a 'regular' computer is to see if the tutorials are repeatable, and they are. It's trying to move over to the RPi 3 with Arch Linux where it breaks down.
Perhaps it's time to realize that if I want a better development experience that I need to spend more money and buy a more commercial system than the Raspberry.
As for where the title came from, here it is: Fishy (itch) (i choose paradise) mac os.
Life's but a walking shadow, a poor player
That struts and frets his hour upon the stage
And then is heard no more: it is a tale
Told by an idiot, full of sound and fury,
Signifying nothing.
Macbeth, Act 5, Scene 5
The quote about life could just as easily apply to software development.