[Cyberduck-trac] [Cyberduck] #11679: Tranfer extremely slow when using "compare" option

[Cyberduck]

#11679: Tranfer extremely slow when using "compare" option
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    Reporter:  dsw      |      Owner:
        Type:  defect   |     Status:  new
    Priority:  normal   |  Milestone:
   Component:  ftp-tls  |    Version:  7.9.0
    Severity:  normal   |   Keywords:  compare, transfer, slow
Architecture:  Intel    |   Platform:  Mac OS X 10.11
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 I want to tranfer files from a remote storage unit to a local HD using the
 "compare" option. Up to the previous version of Cyberduck it worked fine
 and fast.
 Now, "comparison" (preparation) is extremely slow: some folders/files that
 have NOT been changed, and that are thus identical both on my local HD and
 on the remote storage unit, are "compared/prepared" very slowly. The
 "comparion slowness" does not seem to be related to the size of the
 files/folders examined.
 The problem is reproduclble: after a first slow comparison/transfer, a
 second comparison/transfer is again slow on some folders (probably the
 same folders) and no transfer is done as expected.
 The problem is not encountered when the option "ignore" is used: name
 checking is made within a few seconds, whereas "comparison" requires about
 10 minutes for the same set of files and folders. Is there a problem upon
 checking of size, modification date, or checksum?
 NB: The complete set of files/folders to be examined is 85GB, and was
 about the same when I was using the previous version of Cyberduck about 10
 days ago.

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Ticket URL: <https://trac.cyberduck.io/ticket/11679>
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