On 4/9/2012 2:37 PM, Dick Hollenbeck wrote:
> On 04/09/2012 10:45 AM, Wayne Stambaugh wrote:
>> On 4/9/2012 10:38 AM, Dick Hollenbeck wrote:
>>> Some more feedback:
>>>
>>> (segment ...) IS on one line, so good there.
>>>
>>> Wonder if (segment) is our best keyword for what is a trace/track.
>>> specctra uses
>>> (wire). Could check EAGLE's new XML format, if we're lacking opinions,
>>> which would be
>>> atypical.
>>>
>>>
>>> Wonder of the flags in (segment (status HERE) ) should not be spelled out,
>>> and omitted
>>> when they are defaulted. This way you can omit (status).
>> Spelling out the flags is doable. I was also wondering which flags
>> actually need to be saved.
>
> Exactly, you got my hidden point too. :)
I figured as much. I'm going to have to lean on you and JP while I get
up to speed on the Pcbnew code base.
>
>> I'm sure some of the editing flags don't
>> need to be saved. But they may all be cleaned up properly before the
>> file is saved so it may be a non-issue.
>
> Even as bits, they could have set/get accessors which can hide where they
> live even in the
> Format() and subsequent parser.
>
>
> Back to speed:
>
>
> Tokens '(' and ')' are obviously MUCH faster than looking up a keyword, and
> this is why
> this format is going to kick the pants off of any XML format for loading
> speed.
>
>
> So I would think we should score these ( and ) as 5% tokens, speed-wise.
> And when we
> add the hash-table support to DSNLEXER, I think the KICAD_PLUGIN loader has a
> chance of
> being nearly as fast as the LEGACY_PLUGIN loader.
>
>
> I am lobbying now for fast support of these really huge board design files I
> sometimes
> hear about. I have heard rumors of 40 mbyte board design files among our
> user base.
> This is the BOARD design file I am concerned about. Not the 90% under the
> fat part of the
> bell curve. Some of these huge files are allegedly taking several minutes to
> load in the
> commercial board software packages.
>
> Not so here, watch us.
>
Once we get the reader working, it would be nice to get a board file
this size to do some performance testing. The video demo board is the
biggest board file that I have access to.
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