Users Guide
show processes ipc ow-control
Display the single window protocol queue (SWPQ) statistics.
Syntax
show processes ipc flow-control [cp]
Parameters
cp (OPTIONAL) Enter the keyword cp to view the control processor’s SWPQ
statistics.
Defaults none
Command Modes
• EXEC
• EXEC Privilege
Supported Modes All Modes
Command History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
8.3.17.0 Supported on the M I/O Aggregator.
Usage Information
Field Description
Source QID /Tx
Process
Source Service Identier
Destination QID/Rx
Process
Destination Service Identier
Cur Len Current number of messages enqueued
High Mark Highest number of packets in the queue at any time
#of to / Timeout Timeout count
#of Retr /Retries Number of retransmissions
#msg Sent/Msg
Sent/
Number of messages sent
#msg Ackd/Ack
Rcvd
Number of messages acknowledged
Retr /Available
Retra
Number of retries left
Total/ Max Retra Number of retries allowed
Important Points:
• The SWP provides ow control-based reliable communication between the sending and receiving
software tasks.
• A sending task enqueues messages into the SWP queue3 for a receiving task and waits for an
acknowledgement.
• If no response is received within a dened period of time, the SWP timeout mechanism resubmits the
message at the head of the FIFO queue.
• After retrying a dened number of times, the SWP-2-NOMORETIMEOUT timeout message is generated.
Control and Monitoring
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