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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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20gb ram, 10gb zram, 10gb swap, default values. What should I change? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

17 comments fedilink hide all child comments

I assume I should get rid of most of the swap. I also read somewhere to increase... swappiness of zram?

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[–] [email protected] 7 points 1 year ago* (last edited 1 year ago) (2 children)

Those defaults sound pretty sensible. I have as much swap as I have RAM because I set things up to hibernate. I believe pop os has the swappiness set to 180 for using the zram.

[–] [email protected] 2 points 1 year ago (2 children)

Should I lower swap? How do I change the swappiness?

[–] [email protected] 1 points 1 year ago

Have a look at this for info on swappiness. As for your swap, if it's not causing you problems, it can't hurt to have it.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (1 children)

There's some instructions here but basically:

sudo apt install zram-config
append to end of /etc/sysctl.conf:
```
vm.swappiness = 180
# disable swap readahead (since using zram swap)
vm.page-cluster = 0 
```
Can check these have been applied with cat /proc/sys/vm/page-cluster or .../swappiness

[–] [email protected] 1 points 1 year ago

Would these settings be the same if I used the same amount of swap?

[–] [email protected] 1 points 1 year ago

If you have more than enough RAM isn't the older suggested configuration of low swappiness + modest swap should be more performant than encouraging the system to swap more and paying the price of compression. EG if you are apt to use 8GB in normal usage 32-64GB are at this point relatively inexpensive.