[Bug 1337] New: SCP performance twice as slow as RCP

[bugzilla-daemon at bugzilla.mindrot.org]

http://bugzilla.mindrot.org/show_bug.cgi?id=1337

           Summary: SCP performance twice as slow as RCP
           Product: Portable OpenSSH
           Version: 3.8.1p1
          Platform: Other
        OS/Version: AIX
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: scp
        AssignedTo: bitbucket at mindrot.org
        ReportedBy: Jeffery.Martinez at shell.com


Our testing shows significant performance reduction when using SCP
instead of the unsecure RCP protocol to transfer files.  Our testing
shows SCP delivers a transfer rate of 16.35 MB/sec while RCP delivers
39.06 MB/sec.  We have tested on a few different systems, and while
overall speed improves on more powerful servers, the relative
performance remains approximately the same.  SCP is approximately 2
times slower in transfer rate than RCP.  Has there been any work done
to improve this transfer speed in newer versions of OpenSSH?  If not, I
would like to request an enhancement to improve the SCP transfer rate.


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