ksm-control-daemon vs ksmtuned installation

[Ansy]

I've usually installed Proxmox VE two ways:

1. using downloaded official ISO image (flash drive, "bare metal")
2. using apt install proxmox-ve over the Debian 10 on Hetzner dedicated server (Instruction).

Then I've noticed not working KSM in second case... yes, ksm-control-daemon wasn't installed!

But while investigating the issue I've already installed ksmtuned package first and started ksm.service and ksmtuned.service.
Now I can't get working KSM having these messages in Package Versions:

ksm-control-daemon: 1.3-1
ksmtuned: not correctly installed

And I can-t resolve apt conflict due to /etc/ksmuned.conf used in both packages.

Question is: how to get things fixed and working now and in the future?

P.S. https://bugzilla.proxmox.com/show_bug.cgi?id=3219

 

[Dunuin]

I also found ksm missing after manually installing proxmox-ve on a debian 10.6.

I did this to get it working. From my notes:

apt-get install -y ksmtuned
nano /etc/ksmtuned.conf
Optimize this for your RAM size. I used 40ms for 64GB RAM:
KSM_SLEEP_MSEC=40
I edited KSM_THRES_COEF so it will start working if RAM is 60% full (default would be 80%):
KSM_THRES_COEF=40
systemctl enable ksmtuned
systemctl start ksmtuned
systemctl enable --now ksm.service

I think I'm not using that ksm-control-daemon.

 

[Ansy]

I also found ksm missing after manually installing proxmox-ve on a debian 10.6.

I did this to get it working. From my notes:

I think I'm not using that ksm-control-daemon.

Well, it's original ksm service. BTW, is it displaying something other than 0 in KSM field of Proxmox VE web interface?

I've spoke more about ksm-control-daemon package usually added by PVE installation ISO image. Are you managed to get it worked?
I've run some commands like (don't remember exactly):

apt remove ksm-control-daemon
apt remove ksmtuned
apt purge ksmtuned
apt clean ksmtuned
apt autoclean ksmtuned

and then:

apt reinstall ksm-control-daemon
systemctl enable ksmtuned

I see ksmtuned working now, there are some debug lines (logs are switched on) but no more than 0 MB in PVE web interface KSM field.

 

[Dunuin]

Well, it's original ksm service. BTW, is it displaying something other than 0 in KSM field of Proxmox VE web interface?

I've got 64GB RAM and 83% of that RAM is used. The WebGUI shows this:
KSM sharing 9.39 GiB

Ksmtuned only starts working if the threshold is exeeded. By default it will only run if your hosts RAM is over 80% used. As long as more then 20% of your RAM are free it will be deactivated. If you want it to be activated earlier you need to change the "KSM_THRES_COEF" value in "/etc/ksmtuned.conf". If you change it to "KSM_THRES_COEF=100" KSM should be active all the time.

I've spoke more about ksm-control-daemon package usually added by PVE installation ISO image. Are you managed to get it worked?

I checked the installed packages and "ksm-control-daemon" isn't installed here. Looks like that wasn't a dependency of the "proxmox-ve" package and I never installed it.