--- zabbix-4.4.8/conf/zabbix_proxy.conf	2020-04-27 18:15:29.000000000 +0800
+++ zabbix-4.4.8.new/conf/zabbix_proxy.conf	2020-05-15 07:47:20.326122279 +0800
@@ -450,7 +450,7 @@
 #	Shared memory size for storing history data.
 #
 # Mandatory: no
-# Range: 128K-2G
+# Range: 128K-8G
 # Default:
 # HistoryCacheSize=16M
 
@@ -459,7 +459,7 @@
 #	Shared memory size for indexing history cache.
 #
 # Mandatory: no
-# Range: 128K-2G
+# Range: 128K-8G
 # Default:
 # HistoryIndexCacheSize=4M