Change compression from lzf to gzip
Merge MR !102 (merged) first.
This MR makes the HDF5 dataset compression settable through
xsocs.config.DEFAULT_HDF5_COMPRESSION and change the used compression from lzf to gzip by default.
Merged file size is reduced and similar to input EDF.
Here is the results of the tests I made: EDF file: 37M Corresponding HDF5 file:
- lzf: 101M
- gzip with default compression level (4): 42M
- gzip max compression level (9) slower: 35M lzf is expected to be faster, gzip compression with level 9 is slower than with level 4.
I kept the default compression level 4, but this can easily be made settable through
xsocs-config if needed as for setting the compression algorithm.
closes #75 (closed)