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Change huge page settings

edited Jan 23, 2014 7:27AM in Exadata General (MOSC) 1 commentAnswered

Hi Expert,

                Recently we have upgarded memeory from 96 GB to 189 GB in compute nodes which are running in DR site.After memory upgarde we decided to Change hugepage size from 25000 to  38400.Since this can be done runtime I have edited sysctl.conf and executed sysctl -p to take the change in affect.Later I have below observation

Current state:-

cat /proc/meminfo | grep -i huge
HugePages_Total:   35787
HugePages_Free:    27535
HugePages_Rsvd:     7422
HugePages_Surp:        0
Hugepagesize:       2048 kB

 cat /etc/sysctl.conf | grep vm.nr_huge
vm.nr_hugepages = 38400

----------------------------------------------------------------

Previous state:-

cat /etc/sysctl.conf | grep huge
vm.nr_hugepages = 25000
 cat /proc/meminfo | grep -i huge

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