This section presents the formulas for determining the sizes of message queues and semaphores required for one server machine.
Type | Formula |
---|---|
Number of message queue identifiers | (7 + f) ![]() |
Number of semaphore identifiers | {![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Number of semaphores(Total number of semaphores per identifier) | {2 ![]() ![]() |
Condition | Value of d | Value of e | ||
---|---|---|---|---|
pd_ha_acttype=monitor (or default) | 0 | 0 | ||
pd_ha_acttype= server | pd_ha_agent=standbyunit | 1 | 7 | |
pd_ha_agent omitted | pd_ha_server_process_standby=Y (or default) | 1 | 2 | |
pd_ha_server_process_standby=N | 0 | 1 |
For details about the variables used in the formulas, see (c) Variables used in the formulas.
Type | Formula |
---|---|
Number of message queue identifiers | b![]() ![]() ![]() i = 1 |
Number of semaphore identifiers | b![]() ![]() ![]() ![]() ![]() i = 1 |
Number of semaphores (total number of semaphores per identifier) | b![]() ![]() i = 1 |
Type | Formula |
---|---|
Number of message queue identifiers | b![]() ![]() ![]() i = 1 |
Number of semaphore identifiers | b![]() ![]() ![]() ![]() ![]() ![]() i = 1 |
Number of semaphores (total number of semaphores per identifier) | b![]() ![]() ![]() i = 1 |
Condition | Value of f | Value of g | ||
---|---|---|---|---|
pd_ha_acttype=monitor (or omitted) | 0 | 0 | ||
pd_ha_acttype=server | pd_ha_agent=standbyunit | 1 | h | |
pd_ha_agent omitted | pd_ha_server_process_standby=Y (or omitted) | 1 | i | |
pd_ha_server_process_standby=N | 0 | 1 |