MonitorPhysicalResource Syntax Elements - Teradata Vantage

Syntax Elements

bu

ProcId

ID associated with a node.

This value is computed as the module number within a cabinet plus the cabinet number times 10000. For example, a node #123 on cabinet #4 returns an INTEGER value of 40123.

Status

Status of the node associated with this record:

• U = Up/online
• D = Down/offline

A node is up (U) when the following are true:

• The node is configured into the system.
• The node is online.
• The node can perform tasks associated with normal database activity.

Down (D) represents all other potential states.

AmpCount

Current number of AMPs executing on the associated node.

PECount

Current number of active PEs on the associated node.

CPUUse

% of CPU usage not spent being idle. The node-level display is computed from ResUsageSpma table data as PercntUser + PercntService.

This value is NULL if certain conditions apply, see usage notes.

PrcntKernel

% of CPU resources in idle and waiting for I/O completion. This value is computed from ResUsageSpma data as follows, where NCPUsis the number of CPUs:

((CPUIOWAIT/100) / (NCPUs * SampleSec)) * 100

This value is NULL if certain conditions apply, see usage notes.

PrcntService

% of CPU resources spent in PDE user service processing. The value is computed from the ResUsageSpma table data, where x represents the number of CPUs:

CPUUServ / (x * SampleSec)

This value is NULL if certain conditions apply, see usage notes.

PrcntUser

% of CPU resources spent in non-service user code processing. This value is computed from the ResUsageSpma table data, where x represents the number of CPUs:

CPUUExec / (x * SampleSec)

This value is NULL if certain conditions apply, see usage notes.

DiskUse

% of disk usage per node.

This value is computed from ResUsageSldv table data as follows, assuming n is the number of vdisks used by this AMP:

(LdvOutReqTime 1 + ... + LdvOutReqTime n) / (n*SampleSec)

The DiskUse field does not take into account overlapping of operations among multiple storage devices, but does allow for the possibility of multiple requests for the same device.

This value is NULL if certain conditions apply, see usage notes.

DiskReads

Total number of physical disk reads per node during the collection period. This value is computed from ResUsageSldv table data as follows, assuming n is the number of ldv devices used by this node:

LdvReads 1 + ... + LdvReads n

This value is NULL if certain conditions apply, see usage notes.

DiskWrites

Total number of physical disk writes per node during the collection period. This value is computed from ResUsageSldv table data as:

LdvWrites 1 + ... + LdvWrites n

This value is NULL if certain conditions apply, see usage notes.

DiskOutReqAvg

Average number of outstanding disk requests.

The value is computed from ResUsageSldv table data as follows, assuming n is the number of ldv controllers used by this node:

((LdvOutReqSum 1 / NULLIFZERO(LdvOutReqDiv 1)) + … + (LdvOutReqSum n / NULLIFZERO(LdvOutReqDiv n))) / n

The range of the value is typically 0 to 25.

This value is NULL if certain conditions apply, see usage notes.

NetAUse

% of BYNET A usage (BYNET receiver usage). (The BYNET transmitter usage is maintained in resource usage separately and is typically lower than the receiver usage. This is caused by multicasts, where one transmitter sends a message to multiple receivers.) This value is computed from the ResUsageSpma table data as:

((NetSamples - NetTxIdle) / NetSamples) * 100

This value is NULL if certain conditions apply, see usage notes.

NetReads

Number of Reads from the BYNET to the node. This value is computed from the ResUsageSpma table data as:

NetRxCircBrd + NetRxCircPtP

This value is NULL if certain conditions apply, see usage notes.

NetWrites

Number of messages written from the node to the BYNET during the collection period.

The value is computed from the ResUsageSpma table data as NetTxCircBrd + NetTxCircPtP.

This value is NULL if certain conditions apply, see usage notes.

HstBlkRds

Number of message blocks (one or more messages sent in one physical group) received from all clients.

This value is computed from ResUsageShst data, assuming n is the number of host channel and network connections on this node:

HostBlockReads 1 + ... + HostBlockReads n

This value is NULL if certain conditions apply, see usage notes.

HstBlkWrts

Number of message blocks (that is, one or more messages sent in one physical group) sent to all hosts.

This value is computed from ResUsageShst data, assuming n is the number of host channel and network connections on this node:

HostBlockWrites 1 + ... + HostBlockWrites n

This value is NULL if certain conditions apply, see usage notes.

MemAllocates

This column is obsolete and returns zero or NULL.

MemAllocateKB

Value represents the change in node-level memory. MemAllocateKB represents a delta from the previous reporting period, reporting negative values as less memory is used.

This value is calculated from the ResUsageSpma column MemVprAllocKB.

This value is NULL if certain conditions apply, see usage notes.

MemFailures

This column is obsolete and returns zero or NULL.

MemAgings

This column is obsolete and returns zero or NULL.

NetAUp

NetBUp

Status of the BYNETs (if there are more than two, the first two) on a system-wide basis:

• U = All node BYNETs are up/online.
• D = One or more node BYNETs is down/offline.
• "" = A temporary condition where the BYNET data is not available.

VProcCount

Total count of Vprocs of all types in each node.

SegSizeMBperVProc

Size of the segment space for each Vproc in MB.

SegCurrAvailMBperVProc

Available segment space for each Vproc in MB.