03-25-2013
Best Compression technique ?
Hi all,
I am working on a sample backup code, where i read the files per 7200 bytes and send it to server. Before sending to server, i compress each 7200 bytes using zlib compression algorithm using dictionary max length of 1.5 MB . I find zlib is slow.
Can anyone recommend me a compression technique to satisfy my above requirements.
I saw lz4 compression, but it does not support dictionary in it.
or Is there any way to improve the existing zlib algorithm ..??
./Selva..,
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LEARN ABOUT DEBIAN
plscompression
PLSCOMPRESSION(3plplot) PLplot API PLSCOMPRESSION(3plplot)
NAME
plscompression - Set device-compression level
SYNOPSIS
plscompression(compression)
DESCRIPTION
Set device-compression level. Only used for drivers that provide compression. This function, if used, should be invoked before a call to
plinit(3plplot).
Redacted form: plscompression(compression)
This function is used in example 31.
ARGUMENTS
compression (PLINT, input)
The desired compression level. This is a device-dependent value. Currently only the jpeg and png devices use these values. For jpeg
value is the jpeg quality which should normally be in the range 0-95. Higher values denote higher quality and hence larger image
sizes. For png values are in the range -1 to 99. Values of 0-9 are taken as the compression level for zlib. A value of -1 denotes
the default zlib compression level. Values in the range 10-99 are divided by 10 and then used as the zlib compression level.
Higher compression levels correspond to greater compression and small file sizes at the expense of more computation.
AUTHORS
Geoffrey Furnish and Maurice LeBrun wrote and maintain PLplot. This man page was automatically generated from the DocBook source of the
PLplot documentation, maintained by Alan W. Irwin and Rafael Laboissiere.
SEE ALSO
PLplot documentation at http://plplot.sourceforge.net/resources.
August, 2012 PLSCOMPRESSION(3plplot)