[Info-vax] Command to show process rms file opens?

[Bob Gezelter]

On Thursday, July 30, 2020 at 8:52:17 AM UTC-4, David Hittner wrote:
> What is the command to show all RMS files being opened while the process executes commands? I recall seeing this in an "openvms internals" presentation somewhere, but can't remember what facility does this or how to invoke it.
> 
> I have an MMS build that runs 2 hours 21 minutes, and would like to see if there's anything that I could do to speed up the file access, such as INSTALLing frequently accessed files and images, moving files to faster access media, etc. But in order to generate a solution to the the problem I need to know exactly which files are being accessed.

David,

I would suggest starting with MONITOR (or run T4 which runs MONITOR to gather data) to see what the bottleneck is.

There are many performance knobs that be adjusted, but the operative question is: What is the bottleneck?

It could be I/O. It could be paging? It could (less likely) be CPU saturation? WADR, do not speculate. Measure utilization and make the required adjustments.

- Bob Gezelter, http://www.rlgsc.com