[Bug 1814791] [NEW] dput's sftp method is very slow

[Roman Shipovskij]

Public bug reported:

Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.1 LTS
Release:	18.04
Codename:	bionic
dput:           1.0.1ubuntu1

New dput's sftp method is very slow, ~1.5Mbit/s, after some
investigation I found that increasing buffer size up to 65536 increase
upload speed up to ~8Mbit/s, but this is still much slower than old
method.

** Affects: dput (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bionic

** Attachment added: "sftp_bufsize.patch"
   https://bugs.launchpad.net/bugs/1814791/+attachment/5236185/+files/sftp_bufsize.patch

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Title:
  dput's sftp method is very slow

Status in dput package in Ubuntu:
  New

Bug description:
  Distributor ID:	Ubuntu
  Description:	Ubuntu 18.04.1 LTS
  Release:	18.04
  Codename:	bionic
  dput:           1.0.1ubuntu1

  New dput's sftp method is very slow, ~1.5Mbit/s, after some
  investigation I found that increasing buffer size up to 65536 increase
  upload speed up to ~8Mbit/s, but this is still much slower than old
  method.

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