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  1. @ZelnickB ZelnickB renamed this gist Jun 30, 2019. 1 changed file with 0 additions and 0 deletions.
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  2. @ZelnickB ZelnickB revised this gist Jun 30, 2019. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion Settings Descriptions.md
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    @@ -9,7 +9,7 @@ Determines the algorithm to be used in compressing the files. The best algorithm
    Dictates the dictionary size to be used when compressing the files.

    | Dictionary size | Size of Compressed Archive | Speed to Create Archive | RAM to Compress or Decompress |
    | --- | --- | --- |
    | --- | --- | --- | --- |
    | Small | Large | Fast | Minimal |
    | Moderate | Moderate | Moderate | Moderate |
    | Large | Small | Slow | Maximum |
  3. @ZelnickB ZelnickB created this gist Jun 30, 2019.
    40 changes: 40 additions & 0 deletions Settings Descriptions.md
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    # 7-Zip Compression Settings Guide
    ## Archive Format
    For the purposes of this document, we will be using 7-Zip's own `7z` archive format
    ## Compression level
    Dictates the amount the file(s) should be compressed, on a scale from `Store` (no compression, fastest speed) to `Ultra` (highest compression, slowest speed).
    ## Compression method
    Determines the algorithm to be used in compressing the files. The best algorithm is generally considered to be `LZMA2` (Lempel–Ziv–Markov Chain Algorithm version 2).
    ## Dictionary size
    Dictates the dictionary size to be used when compressing the files.

    | Dictionary size | Size of Compressed Archive | Speed to Create Archive | RAM to Compress or Decompress |
    | --- | --- | --- |
    | Small | Large | Fast | Minimal |
    | Moderate | Moderate | Moderate | Moderate |
    | Large | Small | Slow | Maximum |

    ## Word size
    Dictates the size of "words" to be used when compressing the files. A larger word size results in better compression but causes compression to take longer. The value `64` is typical.
    ## Solid Block size
    Dictates the maximum size of a solid block, which is a component of compression useful when storing files of similar size.

    | Solid Block size | *(Approx.) Mode Size of Files to be Archived* | Size of Compressed Archive | Speed of Solid Block Extraction | Notes |
    | --- | --- | --- | --- | --- |
    | Non-solid | N/A | Large | N/A | No solid blocks will be created |
    | Small | Small | Large | Fast | Decreased data loss in the event of archive damage |
    | Medium | Medium | Medium | Moderate | |
    | Large | Large | Small | Slow | Increased data loss in the event of archive damage |
    | Solid | Does not matter | Variable | Variable | No limit on solid block size (the blocks may be `Non-solid`, `Small`, `Medium`, or `Large`) |

    ## Number of CPU threads
    Dictates the amount of processing power to be used by the computer to compress the files.

    | Number of CPU threads | Archive Size | Speed of Compression |
    | --- | --- | --- |
    | Up to 2 | Variable | Slower |
    | Above 2 | May be larger | Faster |

    > This guide is still being developed.
    <sub>Copyright &copy; 2019 Benjamin Zelnick. All Rights Reserved. Permission is granted to non-comercially distribute, modify, and utilize, *as long as this copyright notice is preserved and visible on each copy of the document*.</sub>