Revit and Page Faults

[SBI_N_Kovacevic_BIM]

Hello everyone,

Not sure where exactly to put this question, but has anyone had issues with page faults and Revit going into non-responsive mode often? I'm tracking an issue where, for different users, we have Revit 2023 just close or go into non-responsive mode. My first assumption was that we have insufficient hardware (small NVMe storage or 64GB RAM not being enough). However, this morning I opened Revit, wanted to collect all title blocks, find unique ones, export used families... But after 3 Dynamo nodes, Revit goes into non-responsive mode. I would say that it is not related to Dynamo, as for other users it will be the same in various other situations. What now confuses me is that the usage of RAM is low, but there are still 1 billion page faults. Any ideas?

[TripleM-Dev.net]

How large is the "small NVMe storage" and how much free space?

There's a old post that reference the pagefile as possible reason (not large enough?, should be about 3X RAM memory size)

[SBI_N_Kovacevic_BIM]

Hello,

We had the most problems where NVMe is 500GB and RAM 64GB but for that large project we did face Revit crashes also for 1TB NVMe and 64GB. So, I would say that both 500GB and 64GB are limits. The thing is, while opening the model with links, we will fill up the ACC cache but also because of insufficient RAM we will also "eat" NVMe storage for virtual memory (that is how I try to explain to myself, it does not mean that is true). The thing that confuses me why Revit tend to have billion page faults even when process is using only 7GB of RAM (as on the image in previous post). That I cannot understand.

[TripleM-Dev.net]

Could be the NVMe, that the Virtual memory (swapfile reading) cause it (bottleneck or issue with drive, not reading fase enough or with errors)

See if it's size is set high enough, maybe if has to grow / shrink is causing issues of more read-write access then needed?

Are you sure it's 7Gb, some mid-sized models with maybe 1 links is often already 3Gb

A 300-400Mb model with maybe 7-10 links is often 10Gb reported (on only opening it can be 3Gb, but while working in it for half a day it will grow)

How long do you keep models open, several days?

[SBI_N_Kovacevic_BIM]

Hello,

Thanks for being involved in this issue. Yes, on the image with the first post you can see that process took <7GB of RAM and have almost the same number as "committed" I would call reserve memory for the process. I do not see this as a hardware issue because it is hard to believe that 4 different users on 4 different machines have similar issues. Also, the models are in the "good shape". Probably the next step will be to send the Autodesk models for them to check, maybe they will find something that we can not or it is something how Revit 2023 handle RAM. For the models, we close them on daily basis and opening the next day from ACC. It is not allowed to keep the models opened when we go home.