[Bug 1337] SCP performance twice as slow as RCP

[bugzilla-daemon at bugzilla.mindrot.org]

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





--- Comment #8 from Pádraig Brady <P at draigBrady.com>  2007-07-16 23:51:58 ---
OK I upgraded my ssh and it looks like this is already fixed.
The original results were for openssh-3.9p1-7 (with only 15% CPU used):

$ scp -C localhost:50MB_zeros /tmp
50MB_zeros                                    100%   50MB   2.3MB/s  
$ scp -C localhost:50MB_random /tmp
50MB_random                                   100%   50MB   4.6MB/s


With openssh-4.5p1-6.fc7 I get 100% of the CPU used:

$ scp -C localhost:50MB_zeros /tmp
50MB_zeros                                    100%   50MB  16.7MB/s
$ scp -C localhost:50MB_random /tmp
50MB_random                                   100%   50MB   5.6MB/s


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