jpountz commented on pull request #1912:
URL: https://github.com/apache/lucene-solr/pull/1912#issuecomment-703163915


   > I am a bit worried about perf impact of this new "best effort" priority 
queue.
   
   Yeah I looked into it because I was worried of the performance impact of a 
proper priority queue which needs to do non-negligible work on every push/poll 
to keep the queue ordered. But it's not clear to me how much more costly it is 
compared to the current approach.
   
   I was planning on running another benchmark with a lighter indexing chain to 
better see the impact of this change, e.g. with doc-value fields only, so that 
the amount of work that is performed between the time when the DWPT pool is 
polled and the time when the DWPT is added back to the queue is not much 
heavier than the action of polling from / pushing to the queue.
   
   > I'm curious to see impact on nightly indexing.
   
   So am I. :)


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