Reviewing Warnings

[nsinha73]

Is this necessary
to go over then and fix it? Do warnings harm the performance in anyway?....

[jsnyder.68308]

Yes, fix them.
We have found that review warnings leave big holes in the database that seem to increase over time. We have seen file size increase from 100mb to 150mb in a week - compress the file and it goes back down to around 100mb. We fixed a bunch (hundreds) of review warnings and the file size went down to about 75mb and stayed there.
Best practice for our office now is to never ignore the warnings, particularly those relating to overlapping geometry. There is not much you can do about the "Line is slightly off axis" warnings, especially if you meant to draw the line off axis. We try to keep the number of warnings below 10.

[Rick Houle]

Short answer -- YES.
Everything affects performance. Some things more drastically than others.

FWIW, a line that is "slightly off axis" is not referring to something at 45 or 52.2553 degrees... I believe Revit only reads to 12 decimal places of precision... 0.000000000001
Any angle beyond that is going to be "slightly off axis"...

I recommend you do not ignore that message when it pops up... unless you are just drafting something flat or freeform.

[twiceroadsfool]

Ive "butt dynoed" a few studies on Reviewing warnings, ALL of which pointed to it being extremely important.

If you search through old posts on my blog, theres one where i cleared out a large number of warnings and the model dropped something like 80 MB.

Ive also found anything over 300 (depending on which ones they are) and the model starts to increase the frequency of "the model has not saved to central due to problems while reloading latest. the problems have now been reconciled. please try saving again." (Which, for us, was typically followed by a fatal error, lol).