dianaclarke commented on pull request #9482:
URL: https://github.com/apache/arrow/pull/9482#issuecomment-781677155


   Some conbench results are now reporting (Note: not run in EC2).
   
   <img width="1008" alt="dataset-read" 
src="https://user-images.githubusercontent.com/878798/108429699-924b3900-71fd-11eb-9d17-cfa9857fdac8.png";>
   
   Note that the percent changed is zero because master doesn't yet have the 
pre-buffer read option, so the baseline case is `None`, and the contender cases 
are `True` & `False`, and it doesn't try to compare apples to oranges. I should 
probably change the percent changed to `---` in this case. I'll fix that up 
shortly.
   
   Baseline (no read options):
   https://conbench.ursa.dev/benchmarks/f229c4463cdb4dc99f572ab3bde2b013/
   3 iterations (unit seconds): `['72.086552', '59.959338', '43.372681']`
   
   Contender (pre_buffer=False):
   https://conbench.ursa.dev/benchmarks/57e4936660104ce587e5f4721124810c/
   3 iterations (unit seconds): `['43.061806', '43.123252', '41.576502']`
   
   Contender (pre_buffer=True)
   https://conbench.ursa.dev/benchmarks/654b3867cb1e443eb5f7c73ce304aca1/
   3 iterations (unit seconds): `['37.517980', '32.662669', '34.644381']`
   
   


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