Very high RAM usage in Ubuntu 20.04 on startup

Question

When I start my computer, the htop command shows a very high RAM usage, even without having started the web browser, which is a very common resource eater. Is this normal? Can I do something to reduce this enormous RAM consumption.

If you need more information or logs I am grateful to provide them.

Htop as root user, after rebooting the computer.

The system was installed using ZFS in Ubuntu

@HoltJackson How do you know? What program it could be? How to detect it? — fernandezr, Dec 07 '20 at 13:43
@Jackson I think saying it's malware is jumping to conclusions..... — You'reAGitForNotUsingGit, Dec 07 '20 at 13:45
Can you run htop as superuser (sudo htop) and see if it shows more processes than in your original screenshot? In the original screenshot it doesn't seem that the process eating all the memory is listed — You'reAGitForNotUsingGit, Dec 07 '20 at 13:50
@You'reAGitForNotUsingGit I just see the same proceses but with a lot of threads each one. I've updated the screenshots in the question. — fernandezr, Dec 07 '20 at 13:56
I was thinking ZFS, it would be worthwhile to know what the system was installed with? ZFS or non Ext4. if we can get that it would be great — Rajat Pandita, Dec 07 '20 at 18:58
@RajatPandita Yeah, Ubuntu was installed with ZFS. What is that memory used for? It can be reduced? — fernandezr, Dec 07 '20 at 19:49

Rajat Pandita · Accepted Answer · 2020-12-08T14:26:57.787

0

May be a duplicate of Is ZFS on Ubuntu 20.04 using a ton of memory? Please go through this thread and you will have more information. In short you can't do it, this is used for caching you can reduce it to some extent but not entirely.

edited Dec 08 '20 at 14:26

answered Dec 07 '20 at 14:28

Rajat Pandita

214

Very high RAM usage in Ubuntu 20.04 on startup

1 Answers1