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Speed Up WAN File Transfer With Compression

Terminal - Speed Up WAN File Transfer With Compression
ssh 10.0.0.4 "gzip -c /tmp/backup.sql" |gunzip > backup.sql
2012-01-06 17:44:06
User: ultips
Functions: gunzip ssh
0
Speed Up WAN File Transfer With Compression

If you have servers on Wide Area Network (WAN), you may experience very long transfer rates due to limited bandwidth and latency.

To speed up you transfers you need to compress the data so you will have less to transfer.

So the solution is to use a compression tools like gzip or bzip or compress before and after the data transfer.

Using ssh "-C" option is not compatible with every ssh version (ssh2 for instance).

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives
scp -C 10.0.0.4:/tmp/backup.sql /path/to/backup.sql
2010-02-15 12:39:46
User: OJM
Functions: scp
9

-C is for compression.

ssh 10.0.0.4 "cat /tmp/backup.sql | gzip -c1" | gunzip -c > backup.sql
2010-02-14 19:09:07
User: kennethjor
Functions: gunzip ssh
3

I've kept the gzip compression at a low level, but depending on the cpu power available on the source machine you may want to increase it. However, SQL compresses really well, and I found even with -1 I was able to transfer 40 MiB/s over a 100 mbps wire, which was good enough for me.

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