Pathway/iTS System Management Manual (G06.24+)

Maintaining Pathway/iTS Objects
HP NonStop Pathway/iTS System Management Manual—426748-002
4-20
Improving Performance
A TCP will delete a link to a server process when any of this situations occur:
Improving Performance
You can improve the performance of the PATHMON process in some instances by
reconfiguring your PATHMON environment. The following subsections describe options
that you might want to consider for objects running under the Pathway/iTS product. For
information on other options for improving the performance of the PATHMON process,
see the TS/MP System Management Manual.
Use External TCPs to Manage Terminals
You can distribute the workload by configuring external TCPs to handle terminals. By
distributing the workload and taking advantage of parallelism, you can also decrease
both startup and recovery time.
You can manage any increase in operational complexity by using automated operators.
Cause Action
A “DELETEDELAY” timer expires for a
dynamic link.
Returns the dynamic link.
An OPEN error occurs on a link. Returns the link.
An I/O error occurs on a link. (I/O errors
include timeouts caused by the SET
SERVER TIMEOUT value. Timeouts
caused by the SERVERCLASS_SEND_
timeout value are not considered to be link
errors.)
Returns all links for this server process,
allowing current I/O to complete.
The PATHMON process sends a server
class stop request.
Returns all links for this server process,
allowing current I/O to complete.
The PATHMON process sends a forced
delink request.
Returns all links to the server process,
allowing current I/O to complete.
The PATHMON process sends an external
shutdown notification
Deletes all links owned by that PATHMON
process, allowing current I/O to complete.
Consequently, no links are returned to the
PATHMON process.
The PATHMON process returns an
unexpected I/O error or close message, or
the TCP detects a message protocol error.
Deletes all links owned by that PATHMON
process, allowing current I/O to complete.
Consequently, no links are returned to the
PATHMON process.
External TCP gets an error trying to
communicate with the PATHMON process
Deletes all links owned by that PATHMON
process, allowing current I/O to complete.
Consequently, no links are returned to the
PATHMON process.