feat: initial draft of custom metric tool and its systemd timer #1963
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frankdavid
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ic-os/components/monitoring/custom-metrics/metrics_tool.service
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To support the performance monitoring on mainnet, add a tool where custom metrics can be calculated and exported to prometheus's
node_exporterthrough thetextfilecollector.Currently, the total number of TLB shootdowns across all CPUs will be exposed as
sum_tlb_shootdowns, collected once per minute, as the latestnode_exporterdoes not allow filtering of data of its built-ininterruptscollector that could otherwise do it for us (until prometheus/node_exporter#3028 is included in the release branches) and will add many metrics with high cardinality otherwise.NODE-1445