[manual][io] Rectify obsolete information about RNTuple default compression #1031
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hahnjo
reviewed
Nov 6, 2024
manual/io/index.md
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| @@ -298,7 +298,7 @@ Most analyses on the other hand will benefit from one of the fast compression al | |||
| The compression factor, that is, the saving of storage space, varies with the type of data. A buffer containing `N` identical values is compressed better than a set of values with higher entropy. | |||
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| ROOT offers [several options](https://root.cern/doc/master/structROOT_1_1RCompressionSetting_1_1EAlgorithm.html#ad5ed4ef81888f5406ae0f018ff45fd96), such as LZMA with very high compression ratio, or LZ4 with very high decompression throughput, or ZSTD with a good compromise in performance. | |||
| The default compression for [`RNTuple`](https://root.cern/doc/master/structROOT_1_1Experimental_1_1RNTuple.html) is determined based on the data; for everything else it's zlib with compression level 1. | |||
| The default compression for [`RNTuple`](https://root.cern/doc/master/structROOT_1_1Experimental_1_1RNTuple.html) is ZSTD level 5; for everything else it's zlib with compression level 1. | |||
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While we're at it, this link should be updated to https://root.cern/doc/master/classROOT_1_1RNTuple.html following the move from Experimental (and it's a class already since a while)
jblomer
approved these changes
Nov 6, 2024
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