This database file contains data port services performance data. Data port services is Licensed Internal Code (LIC) that supports the transfer of large volumes of data between a source system and one of N specified (switchable) target systems in an iSeries™ cluster.
Data port services, such as remote independent ASP mirroring, is used by LIC clients. There is one record per IP address per client per collection interval.
| Field Name | Description | Attribute |
|---|---|---|
| INTNUM | Interval number: The nth sample database interval based on the start time specified in the Create Performance Data (CRTPFRDTA) command. | PD (5,0) |
| DTETIM | Interval date (yymmdd) and time (hhmmss): The date and time of the sample interval. | C (12) |
| INTSEC | Elapsed interval seconds: The number of seconds since the last sample interval. | PD (7,0) |
| DTECEN | Century digit. 0 indicates 19xx, and 1 indicates 20xx. | C (1) |
| DPTYPE | Client type. The type of client that is registered to data port services:
|
B (4,0) |
| DPNAME | Client name. The name of the client registered to data port services.
This name is unique for a particular client type but might not be unique across
all client types. This name is defined as follows by client type:
|
C (10) |
| DPIPV | IP version. This field defines the IP version (4 or 6) for the target IP address. | B (4,0) |
| DPIPAD | Target IP address. The IP address of the target system. This record reports statistics for the client's communication on the connection associated with this IP address. An IP version 4 address, which is 4 bytes wide, is right-justified and padded with zeroes. | H (16) |
| DPIPAS | Target IP address status.  The valid value for this field
is 1 or 0. The value of this field is 1 if the target IP address is
currently being used for messaging; otherwise, it is 0. |
C (1) |
| DPNID | Target node ID. The node ID of the target system in the cluster. | C (8) |
| DPDTA1 | Client data 1. Optional data provided by the client. This data is defined
as follows by client type:
|
B (9,0) |
| DPDTA2 | Client data 2. Optional data provided by the client. This data is defined
as follows by client type:
|
B (9,0) |
| DPDTA3 | Client data 3. Optional data provided by the client. This data is defined
as follows by client type:
|
C (10) |
| DPDTA4 | Client data 4. Optional data provided by the client. This data is defined
as follows by client type:
|
C (40) |
| DPASYN | Asynchronous mode. The valid value for this field is
1 or 0. The value of this field is 1 for asynchronous mode; otherwise,
this field is 0 for synchronous mode. For asynchronous mode, the client sends
a message and receives an ACK back when the message is received but before
it is processed by the remote client. For synchronous mode, the client sends
a message and receives an ACK back after the message is received and processed
by the remote client. |
C (1) |
| DPMS | Messages sent. The number of messages sent by the client. This value is incremented when the client requests a send; it does not depend on whether the send is successful. | B (18,0) |
| DPAS | Acknowledgments sent. The number of acknowledgments (ACKs) sent by the client. | B (18,0) |
| DPNS | Negative acknowledgments sent. The number of negative acknowledgments (NACKs) sent by the client. | B (18,0) |
| DPMR | Messages received. The number of messages received by the client. | B (18,0) |
| DPAR | Acknowledgments received. The number of acknowledgments (ACKs) received by the client. | B (18,0) |
| DPNR | Negative acknowledgments received. The number of negative acknowledgments (NACKs) received by the client. | B (18,0) |
| DPMRO | Messages retried once. The number of client messages retried only once. The messages counted are those associated with a data port services initiated retry and not a TCP-initiated retry. | B (18,0) |
| DPMRM | Messages retried more than once. The number of client messages retried more than once. The messages counted are those associated with data port services initiated retries and not TCP-initiated retries. If a message is retried two or more times, then this value is incremented by 1. | B (18,0) |
| DPTMR | Total message retries. The total number of client message retries. The retries counted are data port services initiated retries and not TCP-initiated retries. If a message is retried n times, then this value is incremented by n. | B (18,0) |
| DPMRR | Messages rerouted to alternate address. The number of messages rerouted to an alternate IP address because the attempt to transmit the message timed out too many times. | B (18,0) |
| DPMNA | Messages not acknowledged. The number of client messages sent that did not receive an ACK or NACK in response. | B (18,0) |
| DPMBR | Message bytes received. The number of bytes associated with messages received by the client. This does not include bytes associated with retries or ACK and NACK responses. | B (18,0) |
| DPMBS | Message bytes sent. The number of bytes associated with messages sent by the client. This does not include bytes associated with retries or ACK and NACK responses. This value is incremented when the client requests a send; it does not depend on whether the send is successful. | B (18,0) |
| DPSMS | Small messages sent. Number of messages of size less than or equal to 4K sent by the client. | B (18,0) |
| DPMMS | Medium messages sent. Number of messages of size greater than 4K but less than or equal to 64K sent by the client. | B (18,0) |
| DPLMS | Large messages sent. Number of messages of size greater than 64K sent by the client. | B (18,0) |
| DPSRTT | Smoothed round trip time in microseconds. Current estimate of the average round trip time up to the time the data was collected (see DTETIM field). This estimate is maintained by data port services. The round trip time is the time it takes for a client message to be sent and acknowledged successfully. | B (18,0) |
| DPTRTT | Total round trip time in microseconds. The sum of all of the round trip times. The round trip time is the time it takes for a client message to be sent and acknowledged successfully. Divide this value by round trips to get the average round trip time. | B (18,0) |
| DPRT | Round trips. The number of round trips. Divide total round trip time by this value to get average round trip time. | B (18,0) |