KSM keeps disabling.

[damo2929]

HI all

I am trying to run KSM on the system but when I switch /sys/kernel/mm/ksm/run to 1 something changes it back to 0

I am assuming this is a PVE process if so how can I control it. so that KSM is left running all the time?

 

[damo2929]

answered my own question
disabling ksmtunedwith below means that run is left alone once set.
systemctl disable ksmtuned

 

[Dunuin]

If you want KSM always active you could change #KSM_THRES_COEF=20 in /etc/ksmtuned.conf to KSM_THRES_COEF=99. That way KSM will kick in as soon as free RAM dops below 99% instead of below the default 20% of free RAM.

 

[damo2929]

thanks that now working fine for me.

 

[LnxBil]

And also keep in mind that only KVM/QEMU VMs benefit from KSM.