bitor, bitrshift, bitxor Date and time functions - History functions countunique, find, first Mathematical functions abs, acos, asin, atan, atan2, cbrt, ceil, cos, cosh, cot, degrees, e, exp, expm1, floor approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for syntax. During the upgrade it will be attempted to convert all existing expressions and calculation formulas to the new syntax. Note that with the new syntax after the upgrade trigger synchronization to configuration

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for filter Known issues in 4.0.0 - 4.0.3 • Time suffixes do not work in constants of calculated item formulas. Fixed in 4.0.4. • Negative problem duration affects the total result in SLA calculation or Availability unsupported items). Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. Attention: User macros in the formula will be expanded if used to reference a

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for collecting data. Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. A calculated item may become unsupported in several cases: • referenced item(s) Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; • numerical complications (unfortunately, for some sets of input data

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for collecting data. Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. A calculated item may become unsupported in several cases: • referenced item(s) Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; 1Secure indicates that the cookie should only be transmitted over

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for unsupported items). Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. Attention: User macros in the formula will be expanded if used to reference a Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; • numerical complications (unfortunately, for some sets of input data

，但是需要修改以下位置的监控项引用: * Notifications (actions) * Map element and link labels * Calculated item formulas 4. Q: 我的图形中有一些点而不是线或者有一些空白区域，为什么会这样? A: 数据丢失，这种情况的发生有多种原因——Zabbix 数据库的性能问题、Zabbix 服务器问题、网络问题、监控设备问题 in these locations: * Notifications (actions) * Map element and link labels * Calculated item formulas 4. Q: My graphs have dots instead of lines or empty areas. Why so? A: Data is missing. This can logseverity, logsource, nodata, percentile, trendavg, trendcount, trendmax, trendmin, trendsum Mathematical functions abs, acos, asin, atan, atan2, avg, cbrt, ceil, cos, cosh, cot, degrees, e, exp, expm1

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for collecting data. Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. A calculated item may become unsupported in several cases: • referenced item(s) Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; 1Secure indicates that the cookie should only be transmitted over

approximations are based on MySQL and might be different for other databases. 50 The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for unsupported items). Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. Attention: User macros in the formula will be expanded if used to reference a Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; • numerical complications (unfortunately, for some sets of input data

want to keep 3 years of events, this would require 3*365*24*3600* 170 = 15GB The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for collecting data. Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. Attention: User macros in the formula will be expanded if used to reference a supported in: • trigger expression constants and function parameters. • constants of calculated item formulas 274 For time you can use: • s - seconds (when used, works the same as the raw value) • m - minutes

approximations are based on MySQL and might be different for other databases. The table contains formulas that can be used to calculate the disk space required for Zabbix system: Parameter Formula for unsupported items). Also, if you change the item key of a referenced item, you have to manually update any formulas using that key. Attention: User macros in the formula will be expanded if used to reference a Functions return -1 in such situations: • specified evaluation period contains no data; • result of mathematical operation is not defined2; • numerical complications (unfortunately, for some sets of input data