When I step over the line it takes six seconds to show up for the next
line. However, when I run a performance profile of the page and do exactly
one action -- opening the control panel -- it still takes about 6 seconds
but the performance profile shows thousands of refresh calls down the
widget tree one after the next for six seconds. It blames the whole thing
on sortByList, and specifically the replaceItem function inside it, but I'm
still investigating it.
On Wed, Sep 25, 2019 at 4:12 PM Jed Carty <inmyso...@gmail.com> wrote:
> It is used here:
>
> exports.getTiddlersWithTag = function(tag) {
> // Try to use the indexer
> var self = this,
> tagIndexer = this.getIndexer("TagIndexer"),
> results = tagIndexer && tagIndexer.subIndexers[3].lookup(tag);
> if(!results) {
> // If not available, perform a manual scan
> results = this.getGlobalCache("taglist-" + tag,function() {
> var tagmap = self.getTagMap();
> return self.sortByList(tagmap[tag],tag);
> });
> }
> return results;
> };
>
> which caches the results to make it faster afterward, this works well for
> when a tag isn't on too many tiddlers, but I have no idea what 'too many'
> is here.
>
> I haven't dug too deeply into the cache mechanism and there may be some
> maximum size after which it won't cache results, if that is the case than
> it may have to build the results every time the tag is looked up instead of
> being able to use the cached result.
>
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