Hello Mathew, Thanks for responding so promptly.
I did test 6.8-rc1 and ZSWAP works as expected. But I've noticed something odd. To quickly test ZSWAP, I use eatmemory tool to allocate 7GB of 8GB on my system. Allocating worked and ZSWAP activated but freeing 7GB of memory took ~45s (system was barely responsive) instead of usual 1-2s. I tested on freshly booted machine on native text console (no Graphics DE) and I didn't see that behavior on other kernels even with very busy system. Looks like 6.8 needs some work or maybe there were some commits that altered swap/zswap behavior after 6.7.1. So if you are planning on backporting patches to 6.5 I'd base those on 6.7.1 instead of 6.8. I am back to using Noble's 6.6.0-14.14 which works ok for now. P.S. When testing mainline 6.6.13 I've had dead keyboard after suspend on my XPS13-9350, not sure if Nobles 6.6 has some XPS related fixes or I just was lucky to not catch the bug again ;-) Please let me know if I need to open a separate bug for that. Thanks, Eugene. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2049991 Title: zswap is not working with Linux Kernel 6.5.x Status in linux package in Ubuntu: New Bug description: I recently migrated to Mantic from Jammy and noticed that 6.5.0 has "DEAD" zswap. It also didn't work with HWE-6.5.0 (both -9 and -14) on Jammy. Everything seems normal, all the parameters and no error msgs but frontswap stays 0k at all times and everything gets swapped directly to disk. No usage is reported in /sys/module/zswap/parameters and /sys/kernel/debug/zswap. Jammy with HWE 6.2.0 and Mantic with https://kernel.ubuntu.com/mainline/v6.6.13/ and https://kernel.ubuntu.com/mainline/v6.7.1/ work fine. I was able to reproduce the issue with https://kernel.ubuntu.com/mainline/v6.5.3/. (I would try the latest https://kernel.ubuntu.com/mainline/v6.5.13/ but the build failed due building host issues.) Seems like an upstream problem but not sure how to resolve it since Upstream 6.5 is abandoned and Jammy/Mantic 6.6 is months away... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049991/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
