You can run the optmem command from the Hardware Management Console (HMC) command
line on POWER7® or POWER8® processor-based servers with firmware at level FW760, or
later, to start a Dynamic Platform Optimizer (DPO) operation or stop a DPO operation that is
currently running.
- From the HMC command line, type
the following command to start a DPO operation:
optmem -m managed-system -o start -t affinity [-p partition-names | --id partition-IDs]
[-x partition-names | --xid partition-IDs]
Where: - -x partition-names or --xid partition-IDs specifies
the list of logical partitions or logical partition IDs that must
not be affected by the optimization operation.
- -p partition-names or --id partition-IDs specifies
the list of logical partitions or logical partition IDs that must
be optimized
- To stop a currently running DPO operation, complete the
following steps:
- From the HMC command
line, type the following command to list the DPO operation that is
currently running:
lsmemopt -m managed-system
- From the HMC command
line, type the following command to stop the DPO operation:
optmem -m managed-system -o stop [--optid ID]
Where: - --optid is an optional parameter that identifies
the DPO operation to be canceled.
- ID is the value returned by the lsmemopt command.
Attention: Stopping a DPO operation
before completion might worsen the affinity state of the system as
compared to the affinity state of the system when the DPO operation
was started.
