CP6100 I/O Process Programming Manual

Contents

Balancing the Communication Workload................. 3-24

Revising Line Parameters to Improve Performance...... 3-32

Problem Determination.................................. 3-38

APPENDIX A: FILE SYSTEM ERROR CODES..................... A-1

APPENDIX B: CPTEST...................................... B-1

Input Line Format...................................... B-2

Numbers................................................ B-5

Operators.............................................. B-6

CPTEST RUN Command..................................... B-7

CPTEST Commands........................................ B-9

CPTEST Error Messages.................................. B-29

INDEX.................................................... Index-1

FIGURES

1-1 The CP6100 Environment............................. 1-3

1-2 Application Design Strategies...................... 1-5

1-3 First Generation Controller Fault-Tolerance........ 1-7

1-4a 6100 Subsystem Fault-Tolerance (Dual-Port

Controllers)..................................... 1-9

1-4b 6100 Subsystem Fault-Tolerance (Single-Port

Controllers)..................................... 1-10

2-1 Interaction between Application, I/O Process, and

Protocol Task...................................... 2-3

2-2 WRITEREAD Buffer................................... 2-6

2-3a 6100 Subsystem (Dual-Port Controllers)............. 2-9

2-3b 6100 Subsystem (Single-Port Controllers)........... 2-10

2-4 File System Errors................................. 2-14

3-1a Sample Entries from SYSGEN Configuration File

(Dual-Port Controllers).......................... 3-4

3-1b Sample Entries from SYSGEN Configuration File

(Single-Port Controllers)........................ 3-6

3-2 Effect of ALTER LINE <ldev>, CONFIG................ 3-15

3-3 Excerpt from STATUS LINE, DETAIL................... 3-19

3-4 CPU Switch......................................... 3-26

3-5a Controller Switch. Controllers Owned by

the Same CPU....................................... 3-27

3-5b Controller Switch. Controllers Owned by

Different CPUs..................................... 3-28

3-6a Controller and CPU Switch. Controllers Owned by

Different CPUs..................................... 3-30

3-6b Controller and CPU Switch. Controllers Owned by

the Same CPU....................................... 3-31

October 1985