Utilize zram built-in multi-threading, config file and /tmp mounting

[Eugene San]

I would like to propose the following changes (lp:~eugenesan/+junk/zram-config):

 Utilize zram built-in multi-threading, config file and /tmp mounting

     * Rework scripts to Utilize built-in zram multi cpu support
     * Add support for /tmp mounting on zram device
     * Introduce defaults file for setting parameters
     * Rename scripts and install them to /sbin

[Launchpad Janitor (janitor)]

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

[Mantas Kriaučiūnas (mantas)]

Thanks for RAM SWAP improvements, Eugene :)

Now zram-config is even more useful for devices with SSD/Flash storage - until Eugene improved zram-config I've used tmpfs for /tmp in computers with SSD/Flash storage, but zram is better for /tmp, right? ;)

P.S. I copied zram-config 0.6 from ppa:eugenesan/ppa to main Baltix GNU/Linux repository - ppa:baltix-members/ppa , look at
https://launchpad.net/~baltix-members/+archive

[silviop (far5893)]

https://bugs.launchpad.net/ubuntu/+source/zram-config/+bug/1693432

need attention too.

[Mantas Kriaučiūnas (mantas)]

Dear Ubuntu developers, zram-config was greatly improved by "Eugene San" 2 years ago (2016-02-22), what could I do to see these improvements in Ubuntu 18.04 (Bionic) LTS ?

[Mantas Kriaučiūnas (mantas)]

Dear Eugene San, could you fix important bug in your zram-config branch lp:~eugenesan/+junk/zram-config ?

zram-config.service starts too late, because of this using zram for /tmp and other system folder prevents from starting GDM and some other services in Ubuntu 18.04

Problem can be solved by adding these lines to /lib/systemd/system/zram-config.service

[Unit]
After=local-fs.target
Before=sysinit.target

[Install]
WantedBy=sysinit.target

I'm attaching a patch for zram-config 0.6

See bug #1761740 for more info.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "Fixed startup config (zram-config.service) for systemd" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Eugene San (eugenesan)]

Compatibility issue with GDM on Ubuntu 18.04 was fixed in zram-config version 0.7

Updated code and packages can be found at:
https://git.launchpad.net/~eugenesan/+git/zram-config
https://code.launchpad.net/~eugenesan/+recipe/zram-config-ppa

[Launchpad Janitor (janitor)]

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

[Oibaf (oibaf)]

It looks like this was at least partly addressed in 0.7, available since Ubuntu 22.04/jammy, see https://launchpad.net/ubuntu/+source/zram-config/+changelog

[Eugene San (eugenesan)]

@oibaf
ZRAM driver now supports multi-threading automatically so if all you are interested in is multi-threading , you can use official version.

For those who want additional features like /tmp and performance optimizations feel free to use my version of zram-config ( https://git.launchpad.net/~eugenesan/+git/zram-config ) available at https://code.launchpad.net/~eugenesan/+recipe/zram-config-ppa or by adding ppa:eugenesan/ppa.