11g RedHat 5 and Hugepages
- From: "tgascard@xxxxxxxxx" <tgascard@xxxxxxxxx>
- To: Jon.Crisler@xxxxxxx
- Date: Tue, 12 Oct 2010 09:47:35 +0200
I did it and is working perfectly well.
My configuration :
Not Using AMM with ASM and database
/etc/sysctl.conf :
vm.nr_hugepages= 12288 -- page size 2MB => 24 GB
vm.hugetlb_shm_group=1300 --id dba, be careful if it's a different user
between ASM and Database
kernel.shmmax=25769803776 -- => 24 GB
kernel.shmall=6291456 -- page size 4KB =>24 GB
/etc/security/limits.conf :
memlock=25165824 -- KB => 24 GB
/etc/profile
ulimit -u 16384 -n 65536 -l 25165824
To check you are using Huge Page
grep Huge /proc/meminfo
I hope it 'will help.
Thierry.
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