NAME

       mtbl_info - display information about an MTBL file

SYNOPSIS

       mtbl_info FILE [FILE]...

DESCRIPTION

       mtbl_info(1) displays the following information about the MTBL files specified on the command line.

       file name — the name of the MTBL file.

       file size — the total size of the MTBL file, in bytes.

       index bytes — the total number of bytes and proportion of the total file size consumed by the index.

       data block bytes — the total number of bytes and proportion of the total file size consumed by data
       blocks.

       data block size — the maximum size of an uncompressed data block.

       data block count — the total number of data blocks.

       entry count — the total number of key-value entries.

       key bytes — the total number of bytes that all keys in the file would occupy if stored end-to-end in a
       byte array with no delimiters.

       value bytes — the total number of bytes that all values in the file would occupy if stored end-to-end in
       a byte array with no delimiters.

       compression algorithm — the algorithm used to compress data blocks. Possible values are "none", "snappy",
       "zlib", "lz4", "lz4hc", and "zstd".

       compactness — a rough metric comparing the total number of bytes in the key-value entries with the total
       size of the MTBL file. It is calculated as (file size) / (key bytes + value bytes), and thus takes into
       account the gains of data block compression and prefix key compression against the overhead of the index,
       metadata, and data block offset arrays.

                                                   12/11/2016                                       MTBL_INFO(1)