a9d82bb12b
Currently we set parallel_image_downloads to False, which means that all downloads that go through the image cache are serialized. This change enables it by default and deprecates in favour of a new more fine-grained mechanism: the new option image_download_concurrency specifies how many downloads (and raw conversions) will run in parallel. Update logging to trace how long each download takes. Change-Id: I8b85afda295029f85e82143cf7d4bcb2316860f6
16 lines
516 B
YAML
16 lines
516 B
YAML
---
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features:
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Allows limiting the number of parallel downloads for cached images
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(instance and TFTP images currently).
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upgrade:
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The ``parallel_image_downloads`` option is now set to ``True`` by default.
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Use the new ``image_download_concurrency`` option to tune the behavior,
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the default concurrency is 20.
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deprecations:
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The ``parallel_image_downloads`` option is deprecated in favour of
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the new ``image_download_concurrency`` option that allows more precise
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tuning.
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