No, Ubuntu supports a swap-file instead. And if you have enough memory – compared to what your applications need, and don’t need suspend – you can run all without one. Recent Ubuntu versions will create/use a /swapfile only for new installs.
Is swap necessary for Ubuntu?
If you need hibernation, a swap of the size of RAM becomes necessary for Ubuntu. … If RAM is less than 1 GB, swap size should be at least the size of RAM and at most double the size of RAM. If RAM is more than 1 GB, swap size should be at least equal to the square root of the RAM size and at most double the size of RAM.
Is Ubuntu 20.04 swap necessary?
Well, it depends. If you want to hibernate you will need a separate /swap partition (see below). /swap is used as a virtual memory. Ubuntu uses it when you run out of RAM to prevent your system from crashing. However, new versions of Ubuntu (After 18.04) have a swap file in /root .
Does Linux still need swap?
The short answer is, No. There are performance benefits when swap space is enabled, even when you have more than enough ram. Update, also see Part 2: Linux Performance: Almost Always Add Swap (ZRAM). …so in this case, as in many, swap usage is not hurting Linux server performance.
Does Ubuntu automatically create swap?
Yes, it does. Ubuntu always creates a swap partition if you choose automatic install. And it is not pain to add a swap partition.
Does 16gb RAM need swap space?
If you have a large amount of RAM — 16 GB or so — and you don’t need hibernate but do need disk space, you could probably get away with a small 2 GB swap partition. Again, it really depends on how much memory your computer will actually use. But it’s a good idea to have some swap space just in case.
Can you install Ubuntu without swap?
You don’t need a separate partition. You can choose to install Ubuntu without a swap partition with the option of using a swap file later: Swap is generally associated with a swap partition, perhaps because the user is prompted to create a swap partition at the time of installation.
Is swap on SSD bad?
Although swap is generally recommended for systems utilizing traditional spinning hard drives, using swap with SSDs can cause issues with hardware degradation over time. Due to this consideration, we do not recommend enabling swap on DigitalOcean or any other provider that utilizes SSD storage.
Can I delete swapfile Ubuntu?
It’s possible to configure Linux to not use the swap file, but it will run much less well. Simply deleting it will probably crash your machine — and the system will then recreate it on reboot anyway. Don’t delete it. A swapfile fills the same function on linux that a pagefile does in Windows.
What is swap space Ubuntu?
Swap space is used when your operating system decides that it needs physical memory for active processes and the amount of available (unused) physical memory is insufficient. When this happens, inactive pages from the physical memory are then moved into the swap space, freeing up that physical memory for other uses.
Does 8GB RAM need swap space?
So if a computer had 64KB of RAM, a swap partition of 128KB would be an optimum size. This took into account the fact that RAM memory sizes were typically quite small, and allocating more than 2X RAM for swap space did not improve performance.
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What’s the right amount of swap space?
| Amount of RAM installed in system | Recommended swap space |
|---|---|
| > 8GB | 8GB |
Is using swap memory bad?
Swap memory is not detrimental. It may mean a bit slower performance with Safari. As long as the memory graph stays in the green there’s nothing to worry about. You want to strive for zero swap if possible for optimal system performance but it’s not detrimental to your M1.