MAXRDS parameter
Maximum RSA subtasks
Summary
- Default value
- 1
- Parameter type
- System
- Where set
- User 0 CCAIN parameters
- Related products
- Janus Network Security
- Introduced
- Before Sirius Mods 6.7
Description
The MAXRDS system parameter is a numeric parameter that indicates the number of special-purpose public-key/private-key encryption/decryption subtasks to be used. Since public-key/private-key encryption/decryption is extremely CPU intensive, it can be useful to have the encryption/decryption performed in a special-purpose subtask, freeing the main Model 204 task for other work.
Since CMS does not support true multi-tasking, this parameter has no effect under CMS. Also, since public-key/private-key encryption is only used by Janus Network Security, this parameter has no effect at sites not authorized for Janus Network Security.
Setting this parameter is especially useful at sites where:
- The Online is CPU constrained in the main task.
- Usually or often idle CPUs are available.
- The MP/204 feature is not available to move main task work to idle CPUs.
In an MP/204 environment, it is probably not worth setting MAXRDS. It would probably make more sense to add an additional MP/204 subtask to the Online by increasing the value of the AMPSUBS system parameter.
In a non-MP/204 environment, it probably doesn't make much sense (though is also largely harmless) to set an MAXRDS value greater than 1.
To actually use the tasks attached because of the MAXRDS parameter, the ACTRDS parameter must also be set.