Log what is being written to swap

[serene]

For a laptop with 16 G memory, that never suspends or hibernates... I'm considering disabling the swap partition.

Could someone please recommend a short bash script to log details for what exactly (if any) activity is being writen to the swap partition ?

Thank you
Serene

[purplepenguin]

Code: Select all

sudo top | grep Swap

Will output the swap usage to the terminal. It updates every few secs or so.

I just tried

Code: Select all

sudo top | grep Swap >> swap.txt

The file swap.txt was created but nothing was written to it?

Hope this helps.

Edit**

I left the command running whilst I had my tea. When I came back there was data written to the file.

You could pop the command in a executable file and create a cron job to run it, or just start it when you want to monitor your swap usage.

[nelz]

You don't need to run it with cron, it keeps running the way you have run it and will keep filling the file. By default, it updates every three seconds, which will soon be a lot of data. You can change this with -d.

BTW, top runs as a user, you don't need to use sudo.

You may be better off using a combination of swapon and watch

Code: Select all

watch /sbin/swapon -s

[serene]

Thank you both.

This is a little difficult to record due to the swap isn't being used for anything. Which stress test would you use to force the swap to be read and written to .


Thank you.
Serene

[nelz]

Loading a shedload of large digital photos into GIMP always does it for me

[serene]

Will follow up, thanks.

Cheers

Serene



[SOLVED]