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Friday, August 03, 2012
 
Enabling 2 GB Large Pages on Solaris 10

Few facts:

Prerequisites:

OS: Solaris 10 8/11 (Update 10) or later
Hardware: SPARC T4. eg., SPARC T4-1, T4-2 or T4-4

Steps to enable 2 GB large pages on Solaris 10:

  1. Install the latest kernel patch or ensure that 147440-04 or later was installed

  2. Add the following line to /etc/system and reboot
    • set max_uheap_lpsize=0x80000000

  3. Finally check the output of the following command when the system is back online
    • pagesize -a

    eg.,
    % pagesize -a
    8192  <-- 8K
    65536  <-- 64K
    4194304  <-- 4M
    268435456 <-- 256M
    2147483648 <-- 2G
    
    % uname -a
    SunOS jar-jar 5.10 Generic_147440-21 sun4v sparc sun4v
    
Also See:



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