bug#51763: 27.2; Displaying many images take all memory

[Lars Ingebrigtsen]

Stefan Kangas <stefan@marxist.se> writes:

>> The question is then how to tune it -- if it's mistuned, it may result
>> in catastrophic thrashing if you're showing a buffer with a gazillion
>> images...
>
> I don't think we evict images from the cache if they are being displayed
> though, do we?  I imagine that we would evict them if they haven't been
> displayed for more than N seconds *and* we are above the max memory
> threshold.  Where N is some new variable or constant smaller than
> 'image-cache-eviction-delay'.

Right, that could work, I think...

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