65 lines
1.7 KiB
Markdown
65 lines
1.7 KiB
Markdown
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# Kernel Input Plugin
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This plugin is only available on Linux.
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The kernel plugin gathers info about the kernel that doesn't fit into other
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plugins. In general, it is the statistics available in `/proc/stat` that are
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not covered by other plugins.
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The metrics are documented in `man proc` under the `/proc/stat` section.
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```
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/proc/stat
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kernel/system statistics. Varies with architecture. Common entries include:
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page 5741 1808
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The number of pages the system paged in and the number that were paged out (from disk).
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swap 1 0
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The number of swap pages that have been brought in and out.
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intr 1462898
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This line shows counts of interrupts serviced since boot time, for each of
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the possible system interrupts. The first column is the total of all
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interrupts serviced; each subsequent column is the total for a particular interrupt.
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ctxt 115315
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The number of context switches that the system underwent.
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btime 769041601
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boot time, in seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
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processes 86031
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Number of forks since boot.
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```
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### Configuration:
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```toml
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# Get kernel statistics from /proc/stat
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[[inputs.kernel]]
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# no configuration
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```
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### Measurements & Fields:
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- kernel
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- boot_time (integer, seconds since epoch, `btime`)
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- context_switches (integer, `ctxt`)
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- disk_pages_in (integer, `page (0)`)
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- disk_pages_out (integer, `page (1)`)
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- interrupts (integer, `intr`)
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- processes_forked (integer, `processes`)
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### Tags:
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None
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### Example Output:
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```
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$ telegraf -config ~/ws/telegraf.conf -input-filter kernel -test
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* Plugin: kernel, Collection 1
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> kernel boot_time=1457505775i,context_switches=2626618i,disk_pages_in=5741i,disk_pages_out=1808i,interrupts=1472736i,processes_forked=10673i 1457613402960879816
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```
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