bricscad v12 linux is slower than v11

sitian xiang
sitian xiang
in Linux
 I have use bricscad v12 linux for a while, I find it slow when drawing large files. Today I reinstall bricscad v11, find that v11 is faster than v12 when operate the same file. Does anyone has the same feeling?  Is that because v12 add more 3d function, so the 2d became slowly? Or how to do something yo v12 to make it faster.  Sorry for my bad english.

Comments

  • Keith Frost
    Keith Frost
    I went back and checked/tested.

    there is a difference in performance for me between 2D and 3D context.
    some of the larger assys i've created in V12 will not load in V11.  at least i give up after 15 minutes.

    smaller sub-assys i don't notice much difference in performance.


  • Knut Hohenberg
    Knut Hohenberg
    I did not yet make the switch to V12, so I cannot say definitely - but from the limited testing I did, V12 didn't seem slower except for special cases:
    • the TEXTQLTY variable (saved in the drawing) wasn't used in V11, and is used in V12 if the value is 50 or higher, triggering a new text rendering algorithm. I am not sure if the default setting of 50 can already have a performance penalty on some large drawings - increasing the value definitely will. You could try to save the drawing with a TEXTQLTY value lower than 50 (which reverts to the previous algorithm), then restart Bricscad and reopen the drawing for the change to come into effect.
    • An AutoCAD generated drawing that contained lots of non-graphical entities (was posted in the forums) did load dramatically slower in V12 than in V11 - I guess V11 just ignored some garbage that V12 tries to make sense of... copying the graphical entities into a new drawing cleared the problem.
    Besides, there are a number of application-wide settings that could influence (graphics-)performance, e.g. WHIPARC, GLSWAPMODE, PanBuffer - make sure these vars have the same value in V11 and V12.
    You could also be a bit more specific about what actually feels slower:
    • drawing load/save?
    • zoom/pan?
    • entity selection/snapping?
    • editing commands?
    Then the bricsys folks might take a closer look...
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