LPARSTAT(8)

NAME
lparstat - Reports logical partition ( LPAR ) related information and statistics.

SYNOPSIS
/usr/sbin/lparstat [ options ]

/usr/sbin/lparstat <interval> [ count ]

DESCRIPTION
The lparstat command provides a report of LPAR related information and utilization statistics. This command provides a display of current LPAR related parameters and Hypervisor information, as well as utilization statistics for the LPAR. The lparstat command with no options will generate a single report containing utilization statistics related to the LPAR since boot time. The following information is displayed in the system configuration row:

type
    Partition Type. Can be either dedicated or shared.

mode
    Indicates whether the partition processor capacity is capped or uncapped allowing it to consume idle cycles from the shared pool. Dedicated LPAR is capped or donating.

smt Indicates whether simultaneous multi-threading is enabled or disabled in the partition. If SMT is enabled, the number of SMT threads is displayed.

lcpu
    Number of online logical processors.

mem Online Memory Capacity.

cpus
    Number of online physical processors in the pool.
    This attribute is referred as psize in legacy mode and only available in shared LPAR environment.

ent Entitled processing capacity in processor units. This information is displayed only if the partition type is shared.

The following information is displayed in the utilization row:

%user
    Shows the percentage of the entitled processing capacity used while executing at the user level (application). For dedicated partitions, the entitled processing capacity is the number of physical processors. For uncapped partitions with a current physical processor consumption above their entitled capacity, the percentage becomes relative to the number of physical processor consumed (physc).

%sys
    Shows the percentage of the entitled processing capacity used while executing at the system level (kernel). For dedicated partitions, the entitled processing capacity is the number of physical processors. For uncapped partitions with a current physical processor consumption above their entitled capacity, the percentage becomes relative to the number of physical processor consumed (physc).

%wait
    Shows the percentage of the entitled processing capacity unused while the partition was idle and had outstanding disk I/O requests. For dedicated partitions, the entitled processing capacity is the number of physical processors. For uncapped partitions with a current physical processor consumption above their entitled capacity, the percentage becomes relative to the number of physical processor consumed (physc).

%idle
    Shows the percentage of the entitled processing capacity unused while the partition was idle and did not have any outstanding disk I/O request. For dedicated partitions, the entitled processing capacity is the number of physical processors. For uncapped partitions with a current physical processor consumption above their entitled capacity, the percentage becomes relative to the number of physical processor consumed (physc).

The following statistics are displayed when the partition type is shared or dedicated-donating:

physc
    Shows the number of physical processors consumed.

vcsw
    Shows the number of virtual context switches that are virtual processor hardware preemptions.

The following statistics are displayed only when the partition type is shared:

%entc
    Shows the percentage of the entitled capacity consumed. Because the time base over which this data is computed can vary, the entitled capacity percentage can sometimes exceed 100%. This excess is noticeable only with small sampling intervals.

lbusy
    Shows the percentage of logical processor(s) utilization that occurred while executing at the user and system level.

app Shows the available physical processors in the shared pool.

phint
    Shows the number of phantom (targeted to another shared partition in this pool) interruptions received.

OPTIONS

-i  Lists details on the LPAR configuration. The various details displayed by the -i option are listed below:

    Node Name
        Description

    Partition Name
        Logical partition name as assigned at the HMC.

    Partition Number
        Number of this Logical Partition.

    Type
        Indicates whether the LPAR is using dedicated or shared CPU resource and if the SMT is turned ON. The Type is displayed in the format [Shared | Dedicated] [ -SMT ] [ -# ] The following list explains the different Type formats:

        Shared - Indicates that the LPAR is running in the Shared processor mode.

        Dedicated - Indicates that the LPAR is running in the dedicated processor mode.

        SMT[-#] - Indicates that the LPAR has SMT mode turned ON and the number of SMT threads is 2. If the number of threads is greater than 2, then the number of threads is also displayed.

    Mode
        Indicates whether the LPAR processor capacity is capped, or if it is uncapped and allowed to consume idle cycles from the shared pool. Dedicated LPAR is capped or donating.

    Entitled Capacity
            The number of processing units this LPAR is entitled to receive.

    Partition Group-ID
            LPAR group that this LPAR is a member of.

    Shared Pool ID
            Identifier of Shared Pool of Physical processors that this LPAR is a member.

    Online Virtual CPUs
        Number of CPUs (virtual engines) currently online.

    Maximum Virtual CPUs
        Maximum possible number of CPUs (virtual engines).

    Minimum Virtual CPUs
            Minimum number of virtual CPUs this LPAR was defined to ever have.

    Online Memory
        Amount of memory currently online.

    Minimum Memory
            Minimum memory this LPAR was defined to ever have.

    Desired Memory
            Indicates the desired amount of memory.

    Maximum Memory
            Maximum possible amount of memory.

    Variable Capacity Weight
            The priority weight assigned to this LPAR which controls how extra (idle) capacity is allocated to it. A weight of -1 indicates a soft cap is in place.

    Minimum Capacity
            The minimum number of processing units this LPAR was defined to ever have. Entitled capacity can be reduced down to this value.

    Maximum Capacity
            The maximum number of processing units this LPAR was defined to ever have. Entitled capacity can be increased up to this value.

    Capacity Increment
            The granule at which changes to Entitled Capacity can be made. A value in whole multiples indicates a Dedicated LPAR.

    Active Physical CPUs in System
            The current number of active physical CPUs in the system containing this LPAR.

    Active CPUs in Pool
            The maximum number of CPUs available to this LPAR's shared processor pool.

    Maximum Capacity of Pool
            The maximum number of processing units available to this LPAR's shared processor pool.

    Entitled Capacity of Pool
            The number of processing units that this LPAR's shared processor pool is entitled to receive.

    Unallocated Capacity
            The sum of the number of processor units unallocated from shared LPARs in an LPAR group. This sum does not include the processor units unallocated from a dedicated LPAR, which can also belong to the group. The unallocated processor units can be allocated to any dedicated LPAR (if it is greater than or equal to 1.0 ) or shared LPAR of the group.

    Physical CPU Percentage
            Fractional representation relative to whole physical CPUs that these LPARs virtual CPUs equate to. This is a function of Entitled Capacity / Online CPUs. Dedicated LPARs would have 100% Physical CPU Percentage. A 4-way virtual with Entitled Capacity of 2 processor units would have a 50% physical CPU Percentage.

    Unallocated Weight
            Number of variable processor capacity weight units currently unallocated within the LPAR group.

    Memory Mode
        Indicates whether the memory mode is shared or dedicated. If Active Memory Expansion is enabled, the memory mode also includes a new mode called Expanded.

    Total I/O Memory Entitlement
        The I/O memory entitlement of the LPAR.

    Variable Memory Capacity Weight

    Memory Pool ID
        The memory pool ID of the pool that the LPAR belongs to.

    Physical Memory in the Pool
        The physical memory present in the pool that the LPAR belongs to.

    Unallocated Variable Memory Capacity Weight
        he unallocated variable memory-capacity weight of the LPAR.

    Unallocated I/O Memory Entitlement
        The unallocated I/O memory entitlement of the LPAR.

    Memory Group ID of LPAR
        The memory group ID of the Workload Manager group that the LPAR belongs to.

    Desired Variable Capacity Weight
        The variable memory capacity weight of the LPAR.

-x  Display the LPAR security flavor mode

    0   Speculative execution fully enabled

    1   Speculative execution controls to mitigate user-to-kernel side-channel attacks

    2   Speculative execution controls to mitigate user-to-kernel and user-to-user side-channel attacks

-E  Display Scaled Processor Utilization Resource Register(SPURR) based CPU utilization.
        Actual CPU utilization is based on Processor Utilization Resource Register(PURR).
        Normalized CPU utilization is based on Scaled Processor Utilization Resource Register(SPURR).

-l, --legacy
    Display the report in legacy format.
        Memory attribute in MB instead of KB.
        cpus attribute is referred as psize and only available for shared LPAR.
        lcpu attribute calculation: lcpu = smt * number of online processors.

-h, --help
    Display the usage of lparstat.

-V, --version
    Display the lparstat version information.

interval
    The interval parameter specifies the amount of time between each report.

count
    The count parameter specifies how many reports will be displayed.