[pve-devel] Tickless kernel or not

[Dietmar Maurer]

> >> PVE now uses:
> >> CONFIG_NO_HZ=y
> >> CONFIG_NO_HZ_IDLE=y
> >> CONFIG_RCU_FAST_NO_HZ=y
> >> CONFIG_HZ_250=y
> >> CONFIG_HZ=250
> > I just use the default config provided by RH/Ubuntu for that.
> >
> > Does it matter somehow?
> The performance should go up, as not all cpus (cores) get constantly 
> interrupted to do the kernel stuff, which isn't necessary, but only one. 

We use ONFIG_NO_HZ_IDLE=y, so that is not really the case...