Merge pull request #225 from mkayontour/master

changed function to derivative on mysql counter values to get a real graph

Author: Al2Klimov

templates/mysql.ini

@@ -12,7 +12,7 @@ min = "0"
 yUnitSystem = "none"
 
 [mysql-Connections.functions]
-value = "alias(color($metric$, '#1a7dd7'), 'Connections')"
+value = "alias(color(nonNegativeDerivative($metric$), '#1a7dd7'), 'Connections')"
 
 
 [mysql-Open_files.graph]
@@ -131,7 +131,7 @@ min = "0"
 yUnitSystem = "none"
 
 [mysql-Qcache_not_cached.functions]
-value = "alias(color($metric$, '#1a7dd7'), 'Not cached queries')"
+value = "alias(color(nonNegativeDerivative($metric$), '#1a7dd7'), 'Not cached queries')"
 
 
 [mysql-Qcache_queries_in_cache.graph]
@@ -165,7 +165,7 @@ min = "0"
 yUnitSystem = "none"
 
 [mysql-Queries.functions]
-value = "alias(color($metric$, '#1a7dd7'), 'Queries')"
+value = "alias(color(nonNegativeDerivative($metric$), '#1a7dd7'), 'Queries')"
 
 
 [mysql-Questions.graph]
@@ -182,7 +182,7 @@ min = "0"
 yUnitSystem = "none"
 
 [mysql-Questions.functions]
-value = "alias(color($metric$, '#1a7dd7'), 'Questions')"
+value = "alias(color(nonNegativeDerivative($metric$), '#1a7dd7'), 'Questions')"
 
 
 [mysql-Table_locks_waited.graph]