The ACC ZCOM subsystem requires five semaphores plus one semaphore
for each ACC card and the associated semaphore undo (semnu) structures.
You may need to increase the values of the configurable parameters
semnu and semmni if zmasterd exits without logging a message (and
the ZCOM startup fails) or if any of the following messages are
seen in the ZCOM log file:
hh:mm:ss zmon 295 Download get semaphore failed error: No space left on device
hh:mm:ss zmon 290 Get zmon semaphore failure, error: No space left on device
hh:mm:ss zmlog 018 Get zmlog semaphore failed: No space left on device
hh:mm:ss pcapt 012 Get pcapture semaphore failed: No space left on device |
You need to increase the size of the semmni (number of semaphore identifiers) and semmnu (number of semaphore undo structures) kernel parameters.
Increasing the value of semmni to 128 and the value of semmnu to 64 enabled 25 ACC cards to be used. The optimum
value depends on your system configuration.
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