up.time collects the configuration and performance data outlined in this article from Net-SNMP implementations. Additional performance data outside of this set can be collected using the SNMP service monitor with retained performance metrics.
All data that up.time gathers from Net-SNMP is based on the following MIB implementations:
- RFC 1213 - Management Information Base for Network Management of TCP/IP-based internets
Presents network interface information.
Presents general system state information.
- Host Resources MIB (RFC 2790)
Presents system performance data.
||The name of the system on which Net-SNMP is running.
||RFC 1213 - sysName
||The hardware architecture of the system.
||RFC 1213 - sysDesc
||up.time uses the following information returned by this metric: the number of CPUs on the system and the CPU configuration.
||HOST-RESOURCES-MIB - hrDeviceTable.
||The amount of memory available on the system.
||UCD-SNMP-MIB - memTotalReal
||The size of swap space available on the system.
||UCD-SNMP-MIB - memTotalSwap
||The name of the network card that is installed on the system.
||RFC 1213 - interfaces/ifDescr
||The largest amount of data that the network interface can transmit in a single physical frame.
||RFC 1213 - interfaces/ifMtu
||The maximum speed of the network interface.
||RFC 1213 - interfaces/ifSpeed
||The physical address of the network interface.
||RFC 1213 - interfaces/ifPhysAddress
||The amount of time that the CPU on the system spends executing user processes.
||UCD-SNMP-MIB - systemstats/ssCpuUser
||The amount of time that the CPU spends processing system calls.
||UCD-SNMP-MIB - systemstats/ssCpuSystem
||The amount of time that the CPU is idle.
||UCD-SNMP-MIB - systemstats/ssCpuIdle
||The number of processes that are running on the system.
||HOST-RESOURCES-MIB - hrSystemProcesses
||The total amount of swap space on the system.
||UCD-SNMP-MIB - memory/memTotalSwap
||The amount of swap space that is available.
||UCD-SNMP-MIB - memory/memAvailSwap
||The amount of available memory.
||UCD-SNMP-MIB - memory/memAvailReal
||The total amount of free memory.
||UCD-SNMP-MIB - memory/memTotalFree
||The name of the network interface.
||RFC 1213 - interfaces/ifDescr
||The amount of data, measured in octets, that is moving into the network interface.
||RFC 1213 - interfaces/ifInOctects
||The number of inbound errors.
||RFC 1213 - interfaces/ifInErrors
||The amount of data, measured in octets, that is moving out of the network interface.
||RFC 1213 - interfaces/ifOutOctects
||The number of outbound errors.
||RFC 1213 - interfaces/ifOutErrors
||A description of the file system.
||HOST-RESOURCES-MIB - hrStorage/hrStorageDescr
||The total amount of storage space on the file system.
||HOST-RESOURCES-MIB - hrStorage/hrStorageSize
||The amount of storage space on the file system that has been used.
||HOST-RESOURCES-MIB - hrStorage/hrStorageUsed
||The name of a process that is currently running.
||HOST-RESOURCES-MIB - hrSWRun/hrSWRunName
||The ID of the process that is currently running.
||HOST-RESOURCES-MIB - hrSWRunIndex
||The number of centi-seconds of the total system CPU resources that a running process is consuming.
||HOST-RESOURCES-MIB - hrSWRunPerf/hrSWRunPerfCPU
||The amount of memory that a running process is using.
||HOST-RESOURCES-MIB - hrSWRunPerf/hrSWRunPerfMem
||The number of users currently active on the system.
||HOST-RESOURCES-MIB - hrSystemNumUsers