Technical data

Setting Up and Maintaining Queues
14.2 Designing Queue Environments
Figure 14–2 shows a configuration of several queues, each customized to process
certain types of batch jobs.
Figure 14–2 Multiple Batch Queues with Special Resource and Performance
Options
E
VAX or Alpha
Job limit = 3
Base priority = 4*
Swapping enabled*
SYS$BATCH
E E
SYS$BATCH SYS$BATCH
Job limit = 1 Job limit = 1
Base priority = 5 Base priority = 3
Swapping disabled Swapping enabled*
Special−Purpose Queues
Legend:
E = Execution Queue
* = Default Value
ZK−8752A−GE
In Figure 14–2, SYS$BATCH is the default queue. Normal batch jobs would be
submitted to this queue. The FAST queue executes high-priority jobs that should
not be swapped out of memory. SLOW is a background queue for processing
low-priority jobs. These are large jobs with large requirements for physical
memory.
Be conservative when changing base priority and swapping on a queue. Even
a slight change can have a significant negative effect on batch and interactive
performance. For example, even an increase of 1 in a queue’s base priority can
affect performance significantly.
For information about specifying these options for a batch queue, see
Section 14.6.4.
14.2.1.3 Using Generic Batch Queues in an OpenVMS Cluster Environment
You can use generic queues in a OpenVMS Cluster environment to balance
processing resources by distributing batch processing across nodes in the cluster.
(For an explanation of generic queues, see Section 14.1.2.)
Figure 14–3 shows a typical configuration.
14–6 Setting Up and Maintaining Queues