Thanks to a similar issue in the 2.x branch that's already been fixed
and Randall's guidance, I was able back-port the fix to the 1.2.x branch:
https://github.com/openannotation/annotator/pull/577
My testing shows that these changes made a massive difference in
performance.
Best,
Mike
On 11/16/15 4:27 PM, Michael Widner wrote:
Hi all,
I've discovered that when loading annotations on a long document
(think: a novel), the performance degrades so severely that it becomes
unusable for many people. For me, the test I'm looking at takes 16
full seconds to finish setting up annotations. The offending call
happens at from Util.getTextNodes().
The problem, if I'm understanding it correctly, is that it's having to
walk the entire, very large DOM searching for all the text nodes. Has
anyone else tried running Annotator on a long text? If so, did you
find any work-arounds for the performance problem? Without rewriting
the involved routines, the only solution I can think of is to only
load annotations on the visible screen, but that's also a significant
change.
I'd very much appreciate any ideas or help.
Thanks,
Mike
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