Terrible hme throughput

Frank Jahnke jahnke at sonatabio.com
Wed Sep 27 14:24:57 PDT 2006

fj>> using scp on a large file are about 1.3MB/s.
> try an scp to localhost.  
> 1MB/s is about what I get with 500MHz UltraSPARC IIe.  The scp built
> into Solaris (compiled with Studio or Forte or something I assume) is
> a little over twice as fast on a 440MHz UltraSPARC IIi.  sorry I can't
> compare exactly the same hardware, but I'm assuming the compiler is
> probably the difference.

Well, I get about 0.9MB/s using scp to copy from the original file to 
localhost.   The overhead on both ends of the transfer undoubtedly explains 
the (slightly) lower transfer rates. 


OTOH, I recall that people are using this level of hardware as routers, and 
I recall them getting about 30Mb/s (or 4MB/s) through them.  Is there really 
that much overhead with scp?


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