On Tue, 13 Nov 2007, Shon Stephens wrote:

> I'm a little concerned because of the fact that trying to compress an
> already compressed file can take longer or even create a larger sized
> file.

Using GZIP will be a net loss if you are using most tape hardware (already 
has hardware compression) or a LAN-speed connection (GZIP process will 
become the throughput throttling element)

The Gzip algorithm includes some logic to check if the output is larger 
than input and attempts to stand aside in such cases, but it still uses 
CPU and time to make that determination.


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