Disabling kdump to free memory

Because kdump requires memory to run, the amount of memory you have assigned to the logical partition might not be the actual amount of memory that the partition is able to use.

To disable kdump to realign the memory allocations, remove the crashkernel= setting from the /etc/yaboot.conf file.

If you decide to disable kdump, however, be aware that you will not be able to take a dump if the system crashes while kdump is disabled. Without kdump, there is no “First Failure Data Capture,” and problem determination is affected.

At any time, you can re-enable kdump by adding the crashkernel= setting to the /etc/yaboot.conf file and rebooting the system.