문제
- How can I increase "hugepagesize" from its default value?
환경
- Red Hat Enterprise Linux
해결
- "Hugepagesize" is fixed by architecture. You can see the current Hugepagesize by using the following command;
# cat /proc/meminfo |grep Hugepagesize
- "Hugepagesize" cannot be adjusted on standard x86 or x86_64 architectures.
- However it can be adjusted on certain high end x86_64 processors, AMD Barcelona for an example, but this is presently only available on the Red Hat Enterprise Linux 5.4 kernel.
- "Hugepagesize" can be adjusted on PPC64 and ia64 architectures by passing the kernel parameter "hugepagesz=VALUE" on system boot
example:
title Red Hat Enterprise Linux Server (2.6.18-128.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-128.el5 ro root=/dev/VolGroup_main/LogVol_slash hugepagesz=1G
initrd /initrd-2.6.18-128.el5.img
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