How to speedup copying files using scp command in LINUX

scp output.dat 192.168.111.11:/tmp/               2%   27MB   5.2MB/s   03:01 ETA
scp -c blowfish output.dat 192.168.111.11:/tmp/   6%  100MB   6.8MB/s   02:52 ETA
scp -c arcfour output.dat 192.168.111.11:/tmp/   24%  235MB   7.2MB/s   01:42 ETA

To clear history in linux--------history -c

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