Re: MPS: dangling markers

[Ihor Radchenko]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> - perf points to (1) itree lookup; (2) bytepos<->charpos, which implies
>>   that things may be related to the number of allocated markers and
>>   overlays...
> ...
> So I'm not surprised by your point (2) above, but I don't have an
> explanation for your point (1), OTOH.

(1) was a false alarm (kind of). The perf recording was for redisplay
that did a lot of text property searches. These searches were iterating
over the overlays as well, but it had nothing to do with scratch/igc
branch; just a normal (slow) redisplay behavior when there are large
chunks of hidden text. It's just that igc fiddling with markers made the
performance completely unbearable.

-- 
Ihor Radchenko // yantar92,
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