kicad-developers team mailing list archive

[Wayne Stambaugh <stambaughw@xxxxxxxxx>]

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.

> 
> 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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