Default to zstd

[Fábio Lima]

Package zram-config now defaults compression algorithm to lzo.
What about to change to zstd?

Even better: refactor the script and use zramctl, that manages in a better way.
init-zram-swapping can be like below. I changed this at my machine and works fine.

#!/bin/bash
# Calculate memory to use for zram (1/4 of ram)
modprobe zram 1
zram=$(zramctl --find --algorithm zstd --size $(($(cat /proc/meminfo | grep MemTotal | awk -F' ' '{print $2}') / 4))KiB)
mkswap $zram
swapon $zram

PS: I also suggest considering bug 1835726

[Oibaf (oibaf)]

It would be nice to test the default vs zstd and lz4.

[Oibaf (oibaf)]

Actually the default is lzo-rle.
Before changing the default it should be proved that a different algo is preferable.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mantas Kriaučiūnas (mantas)]

There is https://github.com/highvoltage/zram-tools project, packages are included in Debian and Ubuntu several years ago, see https://tracker.debian.org/pkg/zram-tools
Maybe it's a time to abandon Ubuntu's own zram-config and instead update zram-tools package?

Another way is to include ~eugenesan improvements to zram-config, see bug #1548424 (Utilize zram built-in multi-threading, config file and /tmp mounting)