The Question is:
We have a Production and Test Environment for
products that we run and have the same process
which we run in both environments. It takes
substantially longer to run in the Production
Environment than it does in the Test
Would like to know what the possible reasons
are for the differences in the run times?.
The Answer is :
Please contact the support center directly, as the OpenVMS Wizard must
infer that you wish assistance in determining the baseline application
and system performance details, and in subsequently comparing the results
of the efforts across the two (or more) system configurations involved.
With the establishment of a baseline of application and system performance
for each system or each cluster, you can then make comparisions -- much
like tuning an OpenVMS system or tuning an application, you must identify
the particular performance constraints currently limiting the application
The range of possible causes for performance differences between these
two systems or two cluster configurations is well beyond what could be
discussed in any reply here, as it could easily involve system performance
differences, system tuning differences, I/O performance, application
differences, firmware, quota settings, application and/or system
contention, differences in numbers of records, differences in record
organization or fragmentation within files, deleted records within RMS
files, disk or file fragmentation, or any combination of a vast number
of other potential performance-relevent hardware and/or software
If you wish to research this yourself, please review the performance
manual in the OpenVMS manual set, as well as information relevent to
the language and/or file system and/or database and/or third-party
application and/or network stack and/or other environment-specific
Again, a discussion of potential causes of performance differences is
far too open-ended for a discussion here in Ask The Wizard. Please
contact the support center for tuning and related assistance.
For generic programming information, please see topic (1661). Other
system, application, and RMS file tuning discussions include (292),
(1676), (2259), (2618), (2764), (2794), (3345), (3598), (3948), (4341),
(4365), (6718), (6886), (7425), (7557), (7757), (8409), and (9020).
For some BACKUP discussions, please see (6690), (7556), (7997), (8065),
and (8452). Other tuning-related discussions are also available.