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feature: improve read / write performance #482

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feature: improve read / write performance #482

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Commits on Apr 6, 2024

  1. max-map-size: add command line option 

    On fast storage, reading with a specific block size can drastically
improve fetch performance. This option acts as length mmap argument.

On scale-out or flash disk storage, this value can be set higher than
1MB.

Tests on my side resulted on rsync whole-file, 5x time faster with the
follwowing specs:
  - max-map-size 4MB
  - network 10Gb link
  - hpnssh / 4800 MTU
    @aoblet @tridge
    aoblet authored and tridge committed Apr 6, 2024
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  2. write-size: add command line option 

    This option forces the buffer size when writing a file on the receiver
side.
    @aoblet @tridge
    aoblet authored and tridge committed Apr 6, 2024
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  3. doc: format max map and write size with =SIZE

    @aoblet @tridge
    aoblet authored and tridge committed Apr 6, 2024
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