How do I enable large pages in AIX?

Contact IBM AIX® Support for any large page issues….How to enable large page support?

1. Assign an appropriate enough memory for the new large page pool.
2. Configure the large page pool with both tunables lgpg_regions and lgpg_size.
3. Configure ldedit or LDR_CNTRL or both, confirm with your application team.

What is paging space in AIX?

AIX® uses virtual memory to address more memory than is physically available in the system. A paging space is a type of logical volume with allocated disk space that stores information which is resident in virtual memory but is not currently being accessed.

Where is paging space in AIX?

List the paging space available in the system:

1. Use lsps command.bash-3.00#
2. You can also see the paging details in “prtconf” command.
3. Adding additional paging space : Use mkps command.
4. Check the status using lsps command.

What is the configuration file for paging device in AIX?

To add paging space we need to use “mkps” command. Equivalent smitty faspath command is “smitty mkps”. There will be an entry added in “/etc/swapspaces” file when you create a paging space if you mention optiion “-a”.

How do I increase my paging space?

To add more paging space, you must add logical partitions to the system.

How do I check paging space utilization in AIX?

HowTo: Check Swap Usage In IBM Aix Unix

1. lsps Command. Use this command to see the characteristics of a paging space: # lsps -a.
2. svmon Command. Use this command to captures and analyzes a snapshot of virtual memory: # svmon.
3. Other commands. You can also use the following commands: # vmstat 1 5. # vmstat 10 10.

How do I change the space in AIX?

HowTo: Check Swap Usage In IBM Aix Unix

1. lsps Command. Use this command to see the characteristics of a paging space: # lsps -a.
2. svmon Command. Use this command to captures and analyzes a snapshot of virtual memory: # svmon.
3. Other commands. You can also use the following commands: # vmstat 1 5.

Which command shows the paging space information in AIX?

Displays the characteristics of a paging space. Adds an additional paging space. The mkps command uses the mklv command with a specific set of options when creating a paging space logical volume. To create NFS paging spaces, the mkps command uses the mkdev command with a different set of options.

What does large page mode do?

An interesting option is “Large Page Mode”, which requires the game to be run with administrator privileges. Then, it can allocate larger memory pages, which in my testing only helped with loading performance.

What does large page util do?

The benefit of using large pages CPUs have a virtual memory space that is decoupled from the actual physical memory, in blocks called pages. By using large pages, which are typically 2MB in size, these cache misses are much less frequent, leading to substantially improved performance.

Which command shows the paging space information?

The paging space attributes in the file are modified by the chps -a command or the chps -c command.