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George Lu
2018-08-13 16:15:52 -07:00
parent a884b76bc2
commit 43b4971ca8
2 changed files with 58 additions and 48 deletions
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tests/README.md
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@@ -107,15 +107,19 @@ Full list of arguments
L# - level
--zstd= : Single run, parameter selection syntax same as zstdcli
--optimize= : find parameters to maximize compression ratio given parameters
Can use all --zstd= commands to constrain the type of solution found in addition to the following constraints
cSpeed= - Minimum compression speed
dSpeed= - Minimum decompression speed
cMem= - compression memory
lvl= - Searches for solutions which are strictly better than that compression lvl in ratio and cSpeed,
stc= - When invoked with lvl=, represents slack in ratio/cSpeed allowed for a solution to be considered
- In normal operation, represents slack in strategy selection in choosing the default parameters
prefer[Speed/Ratio]= - Only affects lvl= invocations. Defines value placed on compression speed or ratio
when determining overall winner (default 1 for both).
Can use all --zstd= commands to constrain the type of solution found in addition to the following constraints
cSpeed= : Minimum compression speed
dSpeed= : Minimum decompression speed
cMem= : Maximum compression memory
lvl= : Searches for solutions which are strictly better than that compression lvl in ratio and cSpeed,
stc= : When invoked with lvl=, represents percentage slack in ratio/cSpeed allowed for a solution to be considered (Default 99%)
: In normal operation, represents percentage slack in choosing viable starting strategy selection in choosing the default parameters
(Lower value will begin with stronger strategies) (Default 90%)
preferSpeed= / preferRatio=
: Only affects lvl = invocations. Defines value placed on compression speed or ratio
when determining overall winner (default 1 for both, higher = more valued).
tries= : Maximum number of random restarts on a single strategy before switching (Default 5)
Higher values will make optimizer run longer, more chances to find better solution.
--optimize= : same as -O with more verbose syntax
-P# : generated sample compressibility
-t# : Caps runtime of operation in seconds (default : 99999 seconds (about 27 hours ))