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Darius Kazemi

Figured out the two things that were making Ubuntu 20 slow for me.

1: It installed with 1GB of swap space. This is comically low for a machine with 16GB of RAM. Increased it to 16GB and that helped a lot. But my GUI was still really slow, at which point I realized

2: I had "fractional scaling" enabled for one of my displays. I turned it off and suddenly everything is butter-smooth. It means I have to run my high-DPI screen at a lower resolution but I'll take it.

10 Aug 2021 at 16:29 | Open on friend.camp
3 comments
Mina

@darius i would've thought that swap is only used to hibernate or crashdump to?

but, uh, i don't actually know enough about Linux VM or it's crashing and dumping mechanisms enough

so, feel free to ignore me when you don't know anything either

10 Aug 2021 at 16:40 | Open on cathode.church
Darius Kazemi

@meena Ubuntu recommends 25% RAM worth of swap if you don't user the hibernate feature; it recommends ~125% RAM if you do. I don't use it, but I figured it wouldn't hurt to go for 100%.

I don't know what it's used for but when I had 1GB of swap the system monitor showed 100% swap usage at all times!

10 Aug 2021 at 16:41 | Open on friend.camp
Mina

@darius wouldn't it be cool if Linux had tools that could tell you what's in that swap, and why it was put there??

10 Aug 2021 at 16:52 | Open on cathode.church
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