Command Line Reference Guide

show processes ipc flow-control
Display the single window protocol queue (SWPQ) statistics.
S5000
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
Command History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
Field Description
Tx Process Source Service Identifier
Rx Process Destination Service Identifier
Cur Len Current number of messages enqueued
High Mark Highest number of packets in the queue at any point of time
Timeout Timeout count
Retries Number of retransmissions
Msg Sent Number of messages sent
Ack Rcvd Number of messages acknowledged
Aval Retra Number of retries left/available
Max Retra Number of retries allowed
Important Points:
• The SWP provides flow 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 defined period of time, the SWP timeout mechanism
resubmits the message at the head of the FIFO queue.
• After retrying a defined number of times, the SWP-2-NOMORETIMEOUT timeout
message is generated.
• In the example, a retry (Retries) value of zero indicates that the SWP mechanism
reached the maximum number of retransmissions without an acknowledgement.
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