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Name | Description | Comment |
Interval | The interval within which to retrieve statistics on monitored events in seconds | Interval option is supported by collectd and is defined in <LoadPlugin> block. No additional functionality should be developed in intel_pmu plugin to support this option. |
| EventList | Path to hardware events list file for current CPU. | File can be downloaded by event_download.py script which is part of pmu-tools package. |
HardwareEvents | String containing comma separated list of hardware specific events to monitor | "All" can be used to set all events from Event List. |
| Cores | Core groups definition. Monitored metrics are reported only for configured cores. If this option is omitted all available cores are monitored. If a group is enclosed in square brackets each core is added individually to a separate group (that is statistics are not aggregated). | Allowed formats: |
| DispatchMultiPmu | Enable/disable dispatching of cloned multi PMU for uncore events. If disabled only total sum is dispatched as single event. If enabled separate metric is dispatched for every counter. | Uncore event example: UNC_CHA_DIR_LOOKUP.NO_SNP. If enabled information about event type is added to type_instance, e.g.: "UNC_CHA_DIR_LOOKUP.NO_SNP:type=30". It allows to distinguish between multiple counters for one event. |
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For more details on plugin API see collectd plugin implementation guide https://collectd.org/wiki/index.php/Plugin_architecture.
Hardware Specific Events
In addition to standard groups of events supported by Linux perf (hardware cache, kernel pmu, software) The intel_pmu plugin allows to monitor hardware specific events. To support this functionality plugin will use feature provided by jevents library – resolving symbolic event names using downloaded event files. To be able to use hardware specific event names in configuration file user will have to download events list file for current CPU before using intel_pmu plugin. This can be done using event_download.py script which is part of pmu-tools package.
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The Tests should be carried out on a system underload under load as well as a relatively idle system.
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Ref | Dependency | Status |
1 | libjevents | |
2Net-SNMP | ||
3 | ||
4 |