alamb commented on issue #18909:
URL: https://github.com/apache/datafusion/issues/18909#issuecomment-3575781447

   > > ### Variance study
   > > My results varied by 7% between runs
   > 
   > EBS? We've never found it to be very stable performance wise.
   
   Yeah, according to 
https://github.com/ClickHouse/ClickBench?tab=readme-ov-file#systems-included
   
   > By default, all tests are run on c6a.4xlarge VM in AWS with 500 GB gp2.
   
   Which is what I ran my tests on


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