kicad-developers team mailing list archive

[Wayne Stambaugh <stambaughw@xxxxxxxxx>]

On 1/27/2017 7:40 PM, Chris Pavlina wrote:
> 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 was wrong.  It looks like something in the rescue code is causing the
libraries to be reloaded on every search.  I'll fix it tomorrow and push
the changes.  Don't know how I missed that.

> 
>>
>>>
>>> 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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