About NetBackup wait and delay counters
During a backup or restore operation, the NetBackup media server uses a set of shared data buffers to do the following: isolate the process of communicating with the storage device (tape or disk) from the process of interacting with the client disk or network. Through the use of wait and delay counters, you can determine which process on the NetBackup media server has to wait more often: the data producer or the data consumer.
Achieving a good balance between the data producer and the data consumer processes is an important factor in achieving optimal performance from the NetBackup server component of the NetBackup data transfer path.
Figure: Producer-consumer relationship during a remote client backup shows the producer-consumer relationship.
