Derived now slower – regenerates Parent Partstudios

florian

Hi!

I have the feeling that the derived feature got a lot slower since a few weeks. Situation:

• Partstudio 1 (PS1 for short) has a regen time of 10 seconds
• If I derive any part from PS1 into a PS2 in the same document the regen time of PS2 is equal to that of PS1 = Full regeneration of PS1

The derive feature should not have the need to trigger the regeneration of another partstudio as that PS1 is already up to date. With Onshape always being regenerated I don't see the need to regenerate everything again just fopr a derive, if no feature was changed.

A few weeks back, a derive did not add that kind of overhead. Did Onshape change something under the hood that makes the regeneration necessary? Might this be connected to any of the EVP features I have access to?

––Flo

@pete_yodis you might look into this.

NeilCooke

HI @florian this has always been the case and it is philip_thomas favorite subject

EDIT: If PS1 had not changed PS2 should be quick

florian

@NeilCooke really? All of it - or the EVP part? Because I just looked at a PS at my colleague and the regen time shrunk from 11 Seconds to 500 ms

NeilCooke

Sorry, with the recent update it may have cleared your local cache. Is it the same even after reloading the doc?

philip_thomas

Ok, i am seeing my name being sprinkled like pixie dust about this forum!

Neil is correct, if the cache is valid, then there is no regen of PS1.
We just released and all caches were invalidated. That said, we just finished the USW (USA) document upgrades and the smart people say that it should be working fast again. If your doc is still doing the full rebuild of PS1 as part of a rebuild of the derived feature in PS2 (meaning you edited something above it), then please submit a ticket.
Thank you

(this has been edited because Ilya is standing next to me explaining how it works)

florian

philip_thomas said:

If your doc is still doing the full rebuild on a SECOND and subsequent open AND you are in the USA, then please submit a ticket.
Thank you

OK, I'll have a look at it and wait for EU West to be at the new version. I'll keep you posted

Regards,
Florian

philip_thomas

Florian - see my edited response - edit something above the derive and see if the behaviour persists.

ilya_baran

 I feel like an under-the-hood caching/derived demystified blog post may be in order...

owen_sparks

ilya_baran said:

 I feel like an under-the-hood caching/derived demystified blog post may be in order...

Yes please, any and all "under the hood" insight welcomed here

Owen S.

owen_sparks

philip_thomas said:

Ok, i am seeing my name being sprinkled like pixie dust about this forum!

I think we've just had Philip's nickname for the rest of the year handed to us on a platter.

@lougallo, do you think you could change @philip_thomas' avatar to something "Pixie Dust" related?

This might do:-


Cheers,

Owen S.

philip_thomas

Good job it's already December!