[Cyberduck-trac] [Cyberduck] #185: Slow SFTP transfers
Cyberduck
trac at trac.cyberduck.ch
Tue Nov 9 22:37:09 CET 2010
#185: Slow SFTP transfers
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Reporter: wout.mertens@… | Owner: dkocher
Type: enhancement | Status: closed
Priority: high | Milestone: 4.0
Component: sftp | Version: 3.5
Severity: major | Resolution: fixed
Keywords: | Platform: Mac OS X 10.6
Architecture: Intel |
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Comment (by caeies):
Replying to [comment:57 dkocher]:
> Replying to [comment:56 caeies]:
> > Back again,
> >
> > For your information the bandwidth (according to download via sftp) is
around 11MB/s on my LAN. So there's still a x2 factor missing somewhere.
>
> Is that what you get with OpenSSH? One should compare the size of the
local window getting adjusted during this transfer in comparison. Run
`sftp -vvv`.
Yeah, That's what I get with openSSH. sftp -vvv give me a window of 131072
(comment:52) when yours is around ~92000 IIRC (I don't have any mac
computer at home). That's only for download (I didn't try the upload with
-vvv). And it was 16384 when I was playing around with the different
chunksize / message length ... So it's clearly better, but "could he
higher" :).
And yes there's 64 or 65 requests at the same time (If you log at the logs
R = 65 in my case).
--
Ticket URL: <http://trac.cyberduck.ch/ticket/185#comment:60>
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