Patrick Dupre via users <[email protected]> writes: > swapon > NAME TYPE SIZE USED PRIO > /dev/zram0 partition 8G 8G 100 > /dev/sda2 partition 16G 10.1G -1 >
Combining zram and disk-based swap is generally not a good idea. What will happen is that zram will fill up with old unused pages which are never accessed (and therefore never swapped in), and then the actually used pages will be placed on disk. You are now in a situation with 8GB less memory than you had before, and your swap device is a slow disk instead of fast compressed memory. zswap on the other hand discovers that certain pages have not been in use for a long time, and so it migrates them to disk without decompressing them. It will also notice that some memory pages are incompressible, and it will send those straight to disk. The result is that with zswap, the recently used pages are in fast compressed memory, and stuff which has not been used for hours is on disk. As it should be. https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html -- _______________________________________________ users mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new
