SWAP partition is not in use!? Problem with Hibernation, and "weird data transfers" on USB 3.0

Hi to all. I’m fascinated with this OS. It is so beautiful, practical and with much of creativity build-ed.

I have installed EndeavourOS approx. 1 week ago. And on the SWAP partition I have no activity. Is that normal? Probably because of that I have a problem with Hibernation also…
After reading few posts about similar problems with SWAP file and partitions, I have decided to share some data from my system.

Is there a way that the “problem with SWAP” is in connection with the “copying to, or, from USB 3.0”, is going a little weird? Copying is starting with 500MB/s, and then slowly is going down to 4MB/s (that speed of 4MB/s = 50% of total copy process, * with big files also *).

I have never before seen something like that. With that USB 3.0, on Arch Linux, data transfer was about 30MB/s constant, to or from this SSD. Nothing is changed in hardware configuration.

If You need some more data, be free to ask.

Thank You a lot.

What does free -m show?

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Output is:

Well with such low memory usage, why would you want swap to be engaged? Swap is a last resort technology vs out of memory.

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You have just used 10% of your RAM with 90% free, why should the OS use swap before the RAM is used?

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Now I have learned something useful from You. Thank You! :slightly_smiling_face:

Hi @cosmo Welcome!

Some more info on swap:

https://wiki.archlinux.org/title/Swap

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You’re welcome. Regarding your other topic:

I’m a bit confused because what you describe is the default behaviour, be it on Linux, Windows or Android.

The system first fills its own cache (blazingly fast), then the device cache (very, very fast) and when these are full, actual writes occur. First writes (fast) are still faster than later writes (quite slow), this is why the writing speeds slows down over time.

When you say you saw 30MB/s on Arch vs 500 MB/s dropping to 4 MB/s, it looks a lot like you have seen an average of actual speeds. What you see here should be the real writing speed.

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I understand your confusion. Also I know that basics for Windows and Android, but for Linux i have not been 100% sure, about how things going on. Now I’m sure, regardless of your interesting way of communicating.

I have maked a new thread for the problemns about Hibernate. If the all information told here about SWAP and “Data Transvers”, is true, then the problem about SWAP is NOT EXIST. So, in that case we have a solution.

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