Is there a way to speed up "Detail view"
Forum rules
Be nice to others! Respect the FreeCAD code of conduct!
Be nice to others! Respect the FreeCAD code of conduct!
Is there a way to speed up "Detail view"
It takes about a half hour to set up a Detail view. Every time I move the focus a recompute kicks off. My recomputes seem to be taking a lot longer as I add pages. I tried turning off auto update but then I can't see what I want but I presume when I finish a page, turn off update. Any pointers on making this go faster, ways to deal with the future when I have 10 pages.
Thank you
Thank you
- wandererfan
- Veteran
- Posts: 6307
- Joined: Tue Nov 06, 2012 5:42 pm
- Contact:
Re: Is there a way to speed up "Detail view"
I've never noticed Detail to be particularly slow vs other types of View. If you can, please post you file and I'll have a look.freedman wrote: ↑Fri Feb 15, 2019 9:38 pm It takes about a half hour to set up a Detail view. Every time I move the focus a recompute kicks off. My recomputes seem to be taking a lot longer as I add pages. I tried turning off auto update but then I can't see what I want but I presume when I finish a page, turn off update. Any pointers on making this go faster, ways to deal with the future when I have 10 pages.
TD is slow for some shapes. Usually it is the Hidden Line Removal algos in OCC. OCC announced at one point that they were working on implementing parallel processing for HLR, but I haven't heard of any progress since. That would help a lot.
We could really use something like a painter's algorithm for rendering, but AFAIK it doesn't exist in OCC.
Re: Is there a way to speed up "Detail view"
Here is the threaded part.
Create view, from button press to view; 55 sec.
Create detail, from button press to view; 32 sec.
Move anchor from 0 to .1, from button press to view; 40 sec.
File open with page; 55 sec.
File open without page; 2 sec.
Create view, from button press to view; 55 sec.
Create detail, from button press to view; 32 sec.
Move anchor from 0 to .1, from button press to view; 40 sec.
File open with page; 55 sec.
File open without page; 2 sec.
- Attachments
-
- new_created_thread.FCStd
- (756.25 KiB) Downloaded 46 times
- wandererfan
- Veteran
- Posts: 6307
- Joined: Tue Nov 06, 2012 5:42 pm
- Contact:
Re: Is there a way to speed up "Detail view"
It isn't the Detail view that is slowing things down;
original file - 43.8 sec to load
Log: TIMING - Detail GO spent: 513.222 millisecs in HLRBRep_Algo & co
Log: TIMING - Detail GO spent: 6.280 millisecs in hlrToShape and BuildCurves
Log: TIMING - Detail DVP spent: 11.487 millisecs in GO::extractGeometry
Log: TIMING - ProjItem GO spent: 17155.471 millisecs in HLRBRep_Algo & co
Log: TIMING - ProjItem GO spent: 7.116 millisecs in hlrToShape and BuildCurves
Log: TIMING - ProjItem DVP spent: 27.349 millisecs in GO::extractGeometry
no detail - 38.4 to load
Log: TIMING - ProjItem GO spent: 17860.170 millisecs in HLRBRep_Algo & co
Log: TIMING - ProjItem GO spent: 9.524 millisecs in hlrToShape and BuildCurves
Log: TIMING - ProjItem DVP spent: 28.903 millisecs in GO::extractGeometry
The HLR routines are taking approx 17-18 second to process "ProjItem" (Front) and it gets computed twice.
If I use a regular View instead of a ProjectionGroup, View is only executed once, so the load is faster.
no detail, using View - 22 to load
Log: TIMING - View GO spent: 18054.734 millisecs in HLRBRep_Algo & co
Log: TIMING - View GO spent: 9.812 millisecs in hlrToShape and BuildCurves
Log: TIMING - View DVP spent: 30.207 millisecs in GO::extractGeometry
So the lesson 1 here seems to be don't use ProjectionGroup when a regular View will do.
Lesson 2 is that we need a new geometry builder for cases where we aren't interested in hidden lines.
freecad-daily
OS: Linux Mint 19
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15860 (Git)
Build type: Release
Branch: master
Hash: 3b708c7f84b0425076b520e1d95627b20fd75fe0
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/Canada (en_CA)
- wandererfan
- Veteran
- Posts: 6307
- Joined: Tue Nov 06, 2012 5:42 pm
- Contact:
Re: Is there a way to speed up "Detail view"
Could you repeat your timing test with the current version, please? It seems somewhat faster here. Want to make sure it's not just wishful thinking.
Thanks.
Re: Is there a way to speed up "Detail view"
Not sure about what file I used so I downloaded the file from the post above for the speed test. I have V18.15991 and v18.16085 installed.
V18.15991 .......... v18.16085
Open file:.....55 sec..........53 sec.
delete detail.
Add detail:.....32 sec...........5 sec.
Move detal anchor:.....33 sec...........4 sec.
delete proj. and detail
Create proj:.....54 sec...........26 sec
Big improvements on:
add detail, 32 sec to 5 sec.
Move detail anchor 33sec. to 4 sec., this is great!
Create projection 54 sec. to 26 sec
Nice!
I'll start using that tomorrow morning. It's hard to make a chart in a post, Spaces and Tabs don't hold.
Thanks
V18.15991 .......... v18.16085
Open file:.....55 sec..........53 sec.
delete detail.
Add detail:.....32 sec...........5 sec.
Move detal anchor:.....33 sec...........4 sec.
delete proj. and detail
Create proj:.....54 sec...........26 sec
Big improvements on:
add detail, 32 sec to 5 sec.
Move detail anchor 33sec. to 4 sec., this is great!
Create projection 54 sec. to 26 sec
Nice!
I'll start using that tomorrow morning. It's hard to make a chart in a post, Spaces and Tabs don't hold.
Thanks
Re: Is there a way to speed up "Detail view"
use code blocks
Code: Select all
V18.1599 v18.16085
Open file: 55 sec. 53 sec.
delete detail.
Add detail: 32 sec. 5 sec.
Move detail anchor: 33 sec. 4 sec.
delete proj. and detail
Create proj: 54 sec. 26 sec
- wandererfan
- Veteran
- Posts: 6307
- Joined: Tue Nov 06, 2012 5:42 pm
- Contact:
Re: Is there a way to speed up "Detail view"
Wow! And Thank you!
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.