Proxmox KSM more agressive

Edit /etc/ksmtuned.conf:

# Configuration file for ksmtuned.

# How long ksmtuned should sleep between tuning adjustments
KSM_MONITOR_INTERVAL=7

# Millisecond sleep between ksm scans for 16Gb server.
# Smaller servers sleep more, bigger sleep less.
# KSM_SLEEP_MSEC=100

# KSM_NPAGES_BOOST=300
# KSM_NPAGES_DECAY=-50
# KSM_NPAGES_MIN=64
# KSM_NPAGES_MAX=1250

# KSM_THRES_COEF=20
# KSM_THRES_CONST=2048

# uncomment the following if you want ksmtuned debug info

# LOGFILE=/var/log/ksmtuned
# DEBUG=1

And restart:

systemctl restart ksmtuned