Hi,

while digging and comparing several kernel parameters for optimizations
i was wondering about the following changes from the RHEL7 kernel to the
PVE 4.X kernel and the reasons behind it.

Redhat uses since RHEL7 a fully tickless kernel. Options:
CONFIG_NO_HZ=y
CONFIG_NO_HZ_FULL=y
CONFIG_RCU_FAST_NO_HZ=n
CONFIG_HZ_1000=y
CONFIG_HZ=1000

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

Greets,
Stefan
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