Document changes to async.concurrency defaults and performance considerations. #3528
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d-v-b
approved these changes
Oct 16, 2025
dstansby
reviewed
Oct 16, 2025
| Lower concurrency values may be beneficial when: | ||
| - Working with local storage with limited I/O bandwidth | ||
| - Memory is constrained (each concurrent operation requires buffer space) | ||
| - Using Zarr within a parallel computing framework (see below) |
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This is exactly this use case I ran into 😄 - thanks a lot for putting this together, it's a really nice summary.
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As requested in #3526, this PR adds some documentation about the change to and performance considerations of the async.concurrency config setting.
TODO:
docs/user-guide/*.mdchanges/