Merge pull request #1275 from GeorgeLu97/multilvl

MultiLvl

tests/README.md

@@ -107,15 +107,25 @@ 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= - Automatically sets compression speed constraint to the speed of that level
+                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 )) 
  -v           : Prints Benchmarking output
  -D           : Next argument dictionary file
+ -s           : Benchmark all files separately
 
 ```
  Any inputs afterwards are treated as files to benchmark.