Dandandan commented on PR #15380:
URL: https://github.com/apache/datafusion/pull/15380#issuecomment-2894800268
Looking at the earlier result
> │ Q1 │ 333.47ms │ 375.58ms │ 1.13x slower │
This is the query
```
SELECT l_linenumber, l_partkey
FROM lineitem
ORDER BY l_linenumber
```
So it might actually be the case that the changed code is a bit slower for
this case. In the query there is only little data to copy (so concat batches ->
concat sort keys doesn't help that much) while maybe the overhead of using
interleave_batches is higher 🤔
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