7장. KSM

service ksm start

# service ksm start
Starting ksm:                                              [  OK  ]

chkconfig ksm on

# chkconfig ksm on

service ksmtuned start

# service ksmtuned start
Starting ksmtuned:                                         [  OK  ]

Configuration file for ksmtuned.
How long ksmtuned should sleep between tuning adjustments
KSM_MONITOR_INTERVAL=60
Millisecond sleep between ksm scans for 16Gb server.
Smaller servers sleep more, bigger sleep less.
KSM_SLEEP_MSEC=10
KSM_NPAGES_BOOST is added to the npages value, when free memory is less than thres.
KSM_NPAGES_BOOST=300
KSM_NPAGES_DECAY Value given is subtracted to the npages value, when free memory is greater than thres.
KSM_NPAGES_DECAY=-50
KSM_NPAGES_MIN is the lower limit for the npages value.
KSM_NPAGES_MIN=64
KSM_NAGES_MAX is the upper limit for the npages value.
KSM_NPAGES_MAX=1250
KSM_TRES_COEF - is the RAM percentage to be calculated in parameter thres.
KSM_THRES_COEF=20
KSM_THRES_CONST - If this is a low memory system, and the thres value is less than KSM_THRES_CONST, then reset thres value to KSM_THRES_CONST value.
KSM_THRES_CONST=2048
uncomment the following to enable ksmtuned debug information
LOGFILE=/var/log/ksmtuned
DEBUG=1

# Configuration file for ksmtuned.

# How long ksmtuned should sleep between tuning adjustments
# KSM_MONITOR_INTERVAL=60

# Millisecond sleep between ksm scans for 16Gb server.
# Smaller servers sleep more, bigger sleep less.
# KSM_SLEEP_MSEC=10

# KSM_NPAGES_BOOST is added to the npages value, when free memory is less than thres.
# KSM_NPAGES_BOOST=300

# KSM_NPAGES_DECAY Value given is subtracted to the npages value, when free memory is greater than thres.
# KSM_NPAGES_DECAY=-50

# KSM_NPAGES_MIN is the lower limit for the npages value.
# KSM_NPAGES_MIN=64

# KSM_NAGES_MAX is the upper limit for the npages value.
# KSM_NPAGES_MAX=1250

# KSM_TRES_COEF - is the RAM percentage to be calculated in parameter thres.
# KSM_THRES_COEF=20

# KSM_THRES_CONST - If this is a low memory system, and the thres value is less than KSM_THRES_CONST, then reset thres value to KSM_THRES_CONST value.
# KSM_THRES_CONST=2048

# uncomment the following to enable ksmtuned debug information
# LOGFILE=/var/log/ksmtuned
# DEBUG=1

service ksmtuned stop
service ksm stop

# service ksmtuned stop
Stopping ksmtuned:                                         [  OK  ]
# service ksm stop
Stopping ksm:                                              [  OK  ]

chkconfig ksm off
chkconfig ksmtuned off

# chkconfig ksm off
# chkconfig ksmtuned off