Nick Craig-Wood 2db0e23584 backends: change OpenChunkWriter interface to allow backend concurrency override ... Before this change the concurrency used for an upload was rather inconsistent. - if size below `--backend-upload-cutoff` (default 200M) do single part upload. - if size below `--multi-thread-cutoff` (default 256M) or using streaming uploads (eg `rclone rcat) do multipart upload using `--backend-upload-concurrency` to set the concurrency used by the uploader. - otherwise do multipart upload using `--multi-thread-streams` to set the concurrency. This change makes the default for the concurrency used be the `--backend-upload-concurrency`. If `--multi-thread-streams` is set and larger than the `--backend-upload-concurrency` then that will be used instead. This means that if the user sets `--backend-upload-concurrency` then it will be obeyed for all multipart/multi-thread transfers and the user can override them all with `--multi-thread-streams`. See: #7056		2023-09-03 11:47:05 +01:00
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multipart.go	backends: change OpenChunkWriter interface to allow backend concurrency override	2023-09-03 11:47:05 +01:00