Score:0

Ubuntu

How can I understand the reason my computer freezes?

Fabio Manniti

2/21/23, 8:54 AM

I would like to ask a question: Due to my job I often use many programs together and sometimes my computer freezes, sometimes I can really feel its pain. This often happens when I both use Skype (video calls) and IntelliJ or Virtual Machine is on.

How can I understand if this is due by CPU or RAM (or maybe something else)?

Thank you for your help.

EDIT. As suggested by @heynnema, here is the result for commands free -h

              total        used        free      shared  buff/cache   available
Mem:          5,8Gi       4,2Gi       327Mi        67Mi       1,2Gi       1,2Gi
Swap:         2,0Gi       679Mi       1,3Gi

and swapon -s

Filename                Type        Size    Used    Priority
/swapfile               file        2097148 695552  -2

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hardware

cpu

ram

24601

2/21/23, 9:09 AM

Does this answer your question? [How do I monitor my CPU and RAM usage without installing any software?](https://askubuntu.com/questions/1369355/how-do-i-monitor-my-cpu-and-ram-usage-without-installing-any-software)

Fabio Manniti

2/21/23, 9:48 AM

That definetly helps but the thing is in this way I must stare at the terminal while I'm using other software. It would be helpful to have a sort of graph so I can see what was happening while I was working

heynnema

2/21/23, 9:06 PM

Edit your question and show me `free -h` and `swapon -s`. Start comments to me with @heynnema or I'll miss them.

heynnema

2/22/23, 5:27 PM

When you provide requested data, you have to let the requestor know by sending a comment to them that starts with @heynnema (in my case). `Stacer` is not the answer. Use the standard `System Monitor` app instead. Or use `top`. Let me know if you're still freezing, and I can put together an answer for you.

heynnema

2/22/23, 5:29 PM

What flavor/version of Ubuntu are you running? Show me `sysctl vm.swappiness`.

Score:3

Ubuntu

24601

2/21/23, 3:07 PM

It would be helpful to have a sort of graph so I can see what was happening while I was working

Then use ``Stacer` downloadable from the ubuntu software center

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Fabio Manniti

2/21/23, 11:51 PM

This helps. Thank you very much

pierrely

2/23/23, 4:15 AM

nice proggy, shows disk writes and reads too.

Score:1

Ubuntu

heynnema

2/22/23, 5:31 PM

Your /swapfile is probably too small. Let's increase it from 2G to 4G...

Note: Depending on your usage pattern, you may need more RAM.

Note: Incorrect use of the rm and dd commands can cause data loss. Suggest copy/paste.

In the terminal...

sudo swapoff -a           # turn off swap
sudo rm -i /swapfile      # remove old /swapfile

sudo dd if=/dev/zero of=/swapfile bs=1M count=4096

sudo chmod 600 /swapfile  # set proper file protections
sudo mkswap /swapfile     # init /swapfile
sudo swapon /swapfile     # turn on swap
free -h                   # confirm 6G RAM and 4G swap

Edit /etc/fstab, using sudo -H gedit /etc/fstab or sudo pico /etc/fstab.

Confirm this /swapfile line in /etc/fstab... and confirm no other “swap” lines... use SPACES in this line... confirm NO TABS...

/swapfile  none  swap  sw  0  0

reboot                    # reboot and verify operation

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