slow file transfer via sftp with gvfs-copy

[anderstood]

I originally encountered the problem when connecting with Nemo via SSH ; file transfer was very slow (~ 5kb/s), while with Filezilla, on the same distant machine, I could transfer at 2-3Mb/s.

Using gvfs-copy sftp://.... also resulted in very slow transfer.

Note that I have been observing this behaviour for a long time, but not systematically: the file transfer with nemo has already been fast, seldomly.

___
Release 14.04

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apt-cache policy gvfs
gvfs:
  Installed: 1.20.1-1ubuntu1
  Candidate: 1.20.3-0ubuntu1.2
  Version table:
     1.20.3-0ubuntu1.2 0
        500 http://fr.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
 *** 1.20.1-1ubuntu1 0
        500 http://fr.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gvfs 1.20.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Sep 17 22:05:22 2015
InstallationDate: Installed on 2014-06-23 (451 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: gvfs
UpgradeStatus: No upgrade log present (probably fresh install)

[seattle vic (victorino)]

I can confirm that nemo sftp is painfully slow. I hadn't paid attention to it until recently, but it's transferring at around 30 kb/s. The same transfer using filezilla fstp is at least 10 times faster.

Ubuntu 15.04 AMD 64
Nemo 2.2.4
GVFS 1.24.1-1ubuntu1