nbari / pg_exporter / 29279197690
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Files 118
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coverage: 90.836% (-0.4%) from 91.282%
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nbari 
add --collector.system host CPU/memory collector (#26)

Opt-in, Linux/FreeBSD-only collector exposing node_exporter-style host
metrics for the machine running the exporter. CPU time is a single
per-core counter, pg_system_cpu_seconds_total{cpu,mode} (mirroring
node_cpu_seconds_total), alongside load average and memory/swap byte
gauges. It reads only the OS (/proc/stat on Linux, the kern.cp_times
sysctl on FreeBSD, sysinfo for memory/load) and never queries
PostgreSQL, so it adds zero query or connection load.

- Per-core CPU by default; aggregate host utilization is derived in
  PromQL (sum without(cpu) ...). This gives per-core hotspot visibility
  while cardinality stays bounded per host (modes x cores) and does not
  scale with the number of databases.
- Warns at startup when enabled against a non-loopback DSN (co-located
  only; misleading on managed services such as RDS/Aurora).
- Adds a collapsed "Host CPU / Memory" Grafana dashboard row, the
  collector README, a main-README entry, a CHANGELOG [0.17.0] entry, and
  --collector.system to the "just watch" recipe.
- Makes the dashboard "Memory & Swap Usage" panel easier to read: total
  memory renders as a dashed reference line while used-memory and swap
  fills are no longer merged into one stacked gradient.
- Refreshes Cargo.lock (mio, rustls, zmij patch updates) via cargo update.
- Clarifies the "Exporter Process CPU Usage" panel: the solid line is
  relabeled "CPU % of one core" (100% = one core, can exceed 100%) and
  the dashed line "% of whole host (normalized)", removing the ambiguous
  "per-core" wording, with a rewritten description.

641 of 681 new or added lines in 6 files covered. (94.13%)

83 existing lines in 12 files now uncovered.

16454 of 18114 relevant lines covered (90.84%)

132.53 hits per line

Uncovered Changes

Lines Coverage ∆ File
12
93.26
 src/collectors/system/process.rs
9
95.43
 src/collectors/system/cpu.rs
8
91.58
 src/collectors/system/memory.rs
6
94.92
 tests/collectors/system.rs
3
92.5
 src/collectors/system/mod.rs
2
92.1
 0.92% src/exporter/mod.rs

Coverage Regressions

Lines Coverage ∆ File
26
92.72
 -3.53% tests/collectors/database/stat.rs
19
93.42
 0.05% src/collectors/registry.rs
12
91.28
 -1.25% tests/connection_budget.rs
8
80.45
 0.45% tests/collector_safety.rs
5
96.89
 -1.3% tests/collectors/locks/count.rs
4
98.84
 0.46% src/collectors/database/stats.rs
2
98.31
 -0.81% src/cli/dispatch/mod.rs
2
85.29
 0.0% src/collectors/default/settings.rs
2
88.82
 -0.41% tests/collectors/replication/replica_topology.rs
1
99.7
 -0.3% src/cli/commands/options.rs
1
97.61
 -0.48% tests/collectors/activity/connections.rs
1
99.17
 0.02% tests/collectors/default/settings.rs
Jobs
ID Job ID Ran Files Coverage
1 29279197690.1 118
90.84
 GitHub Action Run
Source Files on build 29279197690