Service Manual

Version Description
9.0.2.0 Introduced on the S6000.
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series and E-Series.
Usage Information
Field Description
Source QID /Tx
Process
Source Service Identier
Destination QID/Rx
Process
Destination Service Identier
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 dened period of time, the SWP timeout mechanism resubmits the
message at the head of the FIFO queue.
• After retrying a dened number of times, the SWP-2-NOMORETIMEOUT timeout message is generated.
• In the S-Series example, a retry (Retries) value of zero indicates that the SWP mechanism reached the
maximum number of retransmissions without an acknowledgement.
Example (S-Series)
Dell#show processes ipc flow-control ?
cp Control Processor
| Pipe through a command
Control and Monitoring
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