kicad-developers team mailing list archive

[Chris Pavlina <pavlina.chris@xxxxxxxxx>]

On Fri, Jan 27, 2017 at 05:21:42PM -0500, Wayne Stambaugh wrote:
> I finally got the new schematic I/O plugin fully functional for the
> current schematic and symbol library file formats.  When you have some
> time, please test this to see if I've missed anything.  I've pushed it
> to my repo on launchpad here:
> 
> https://code.launchpad.net/~stambaughw/kicad/+git/kicad-dev/+ref/use-symbol-library-table
> 
> There is a noticeable performance hit on start up when loading a
> schematic.

Holy crap, there is a performance hit of _over a minute_ loading the
project I'm working on!

I'm testing this though.

> I'm not sure why this is happening but I believe it has to
> do with the cache validity test being called on every symbol search.  I
> verified that the cache isn't being reloaded but I'm a bit surprised
> that there was as much of a performance hit.  If you happen to notice
> something I missed please let me know.  I am primarily concern with the
> accuracy and stability of the library file I/O at this point.  I tested
> everything I could think of against the current code and always got the
> same file results but there may have been some corner cases that I
> missed.  The performance hit will be temporary.  Once the symbol library
> table support is implemented, the symbol search through the entire
> library list will go away.  Either the symbol is in the library
> specified or it's not.  I will probably introduce lazy loading as well
> once the symbol library table is implemented as only libraries that
> contain symbols in the schematic will need to be loaded when the
> schematic is opened.  Many thanks in advance for the help.
> 
> Cheers,
> 
> Wayne
> 
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