kicad-developers team mailing list archive

[Chris Pavlina <pavlina.chris@xxxxxxxxx>]

On Fri, Jan 27, 2017 at 07:28:09PM -0500, Wayne Stambaugh wrote:
> On 1/27/2017 6:02 PM, Chris Pavlina wrote:
> > 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!
> 
> Debug or release build?  I saw significantly longer load times on debug
> builds although release builds were no speed demon either.  I'll step
> through it again tomorrow just to see if I missed where the cache may be
> getting reloaded.

Release build. Not a huge project either, seven pages and 354
components...

> 
> > 
> > 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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