[Info-vax] Command to show process rms file opens?
David Hittner
dthittner at gmail.com
Fri Jul 31 11:10:30 EDT 2020
On Thursday, July 30, 2020 at 12:00:29 PM UTC-4, geze... at rlgsc.com wrote:
> 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
Thanks for the reminder to do an analysis and gather detailed metrics before haphazardly changing things.
I would tend to think that it's an I/O bottleneck, because a slower rx2620 with user files on a dual-channel external 8GB FC RAID array could execute this build in 45 minutes, but I will check. I copied the username from the default SYSTEM account (HPE OpenVMS 8.4 U7) after setting up the system, so it should have fairly decent working set sizes - but again, I'll check.
It could just be that I need to fix the write cache on the RAID controller by getting new batteries to get the I/O speed back up.
David
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