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SFTP transfer rate below possible bandwidth #2278

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cyberduck opened this issue Jul 6, 2008 · 4 comments
Closed

SFTP transfer rate below possible bandwidth #2278

cyberduck opened this issue Jul 6, 2008 · 4 comments
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@dkocher
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bug duplicate sftp SFTP Protocol Implementation

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@cyberduck
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60e4a87 created the issue

Uploading a 400MB file over a 100Mbit/Full duplex link using SFTP with the preference 'Transfer Files using' set to SFTP (rather than SCP) is consistently very slow at roughly 1.4MB/s.

If the SFTP preference 'Transfer Files using' option is set to SCP then this can be marginally improved and the observed transfer rates are roughly 6MB/s.

However this is still well below what can should be achieved.
In comparison:
sftp from a Terminal session achieves 8.5MB/s for the same file transfer.
scp from a Terminal session achieves 9.8MB/s for the same file transfer.
@cyberduck
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64df087 commented

Same symptoms seen when downloading file as well.

FileZilla : DL is at 1.5MB.sec
Cyberduck (SFTP) : 150kB.sec
Cyberduck (scp) : 250kB.sec

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anonymous commented

apologizes for renaming the bug.

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ink commented

Still a problem in Version 3.1.2 (4488).
Is it likely to get fixed before 3.2 ?

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cyberduck commented Dec 20, 2009 •
edited

@dkocher commented

Duplicate for #12134.

@iterate-ch iterate-ch locked as resolved and limited conversation to collaborators Nov 26, 2021
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@dkocher @cyberduck