Weston Pace created ARROW-16014:
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Summary: [C++] Create more benchmarks for measuring expression
evaluation overhead
Key: ARROW-16014
URL: https://issues.apache.org/jira/browse/ARROW-16014
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Weston Pace
Assignee: Weston Pace
We have a lot of great benchmarks on individual kernels but I don't know if we
have enough benchmarks on the function & expression evaluation itself.
There are some benchmarks (function_benchmark.cc) which measure this but I
would like to get a better sense of a "bytes per second" number from the
function system for a trivial function (e.g. an identity function that simply
returns the values as is).
In addition, we should measure overhead for common tasks like preallocation,
etc.
I would also like these benchmarks to be parameterized by batch size. Being
able to run on small batches enables (in theory) better cache utilization. I
suspect that the overhead here may start to become a bottleneck.
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