host dashboard: pressure stall panels, docs for the new series
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atlas
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2 changed files with 191 additions and 21 deletions
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@ -345,12 +345,13 @@ filters those series out and the host dashboard's top-10 panels group by
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`container.name`. Its storage usage isn't measured, so that series is absent.
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`container.name`. Its storage usage isn't measured, so that series is absent.
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| Metric | Unit | Kind | Source |
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| Metric | Unit | Kind | Source |
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| --------------------------------------- | ----------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| ------------------------------------------- | ----------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `container.cpu.time` | `s` | counter | cumulative `cpu.stat` `usage_usec` → seconds |
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| `container.cpu.time` | `s` | counter | cumulative `cpu.stat` `usage_usec` → seconds |
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| `container.memory.usage` | `By` | gauge | `memory.current` |
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| `container.memory.usage` | `By` | gauge | `memory.current` |
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| `hyperhive.container.memory.limit` | `By` | gauge | `memory.max` (custom — semconv has no `.limit` metric; omitted when unlimited) |
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| `hyperhive.container.memory.limit` | `By` | gauge | `memory.max` (custom — semconv has no `.limit` metric; omitted when unlimited) |
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| `hyperhive.container.memory.peak` | `By` | gauge | `memory.peak` (custom — no semconv metric; omitted if unavailable) |
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| `hyperhive.container.memory.peak` | `By` | gauge | `memory.peak` (custom — no semconv metric; omitted if unavailable) |
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| `hyperhive.container.memory.oom_kills` | `{process}` | counter | `memory.events` `oom_kill`: processes the kernel killed for memory in the container and below it (custom; omitted if unavailable) |
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| `hyperhive.container.memory.oom_kills` | `{process}` | counter | `memory.events` `oom_kill`: processes the kernel killed for memory in the container and below it (custom; omitted if unavailable) |
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| `hyperhive.container.memory.pressure.stall` | `us` | counter | `memory.pressure` `total` in microseconds, split by a `kind` attribute (`some`, `full`); a rate is the stalled share of time (custom; omitted without PSI) |
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| `hyperhive.container.memory.swap.usage` | `By` | gauge | `memory.swap.current` (custom; omitted if unavailable) |
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| `hyperhive.container.memory.swap.usage` | `By` | gauge | `memory.swap.current` (custom; omitted if unavailable) |
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| `hyperhive.container.storage.usage` | `By` | gauge | `state/` + `work/` + the root template (the live ephemeral layer isn't counted), measured by `hive-priv` every 30 min (custom — semconv only has `disk.io`; omitted while unknown: not measured yet, or the last measurement failed) |
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| `hyperhive.container.storage.usage` | `By` | gauge | `state/` + `work/` + the root template (the live ephemeral layer isn't counted), measured by `hive-priv` every 30 min (custom — semconv only has `disk.io`; omitted while unknown: not measured yet, or the last measurement failed) |
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| `hyperhive.container.cpu.percent` | `%` | gauge | host-normalised percent (custom — no `rate()` needed) |
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| `hyperhive.container.cpu.percent` | `%` | gauge | host-normalised percent (custom — no `rate()` needed) |
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@ -524,7 +525,7 @@ whole-swarm spend figure.
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<!-- vale write-good.Passive = NO -->
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<!-- vale write-good.Passive = NO -->
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hive-c0re measures everything above **per agent**, tagged with the hive it
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hive-c0re measures everything above **per agent**, tagged with the hive it
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runs in. It measures these five per **hive** instead, and they carry no
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runs in. It measures these six per **hive** instead, and they carry no
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`agent` label — so a hive
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`agent` label — so a hive
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that hosts no agents still reports, and "this hive is quiet" is
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that hosts no agents still reports, and "this hive is quiet" is
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distinguishable from "this hive is gone." Select them with
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distinguishable from "this hive is gone." Select them with
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@ -533,12 +534,13 @@ distinguishable from "this hive is gone." Select them with
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<!-- vale write-good.Passive = YES -->
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<!-- vale write-good.Passive = YES -->
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| Metric | Unit | Kind | Meaning |
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| Metric | Unit | Kind | Meaning |
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| -------------------------------------- | ---- | ----- | -------------------------------------------------------------------------------------------------------------------- |
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| -------------------------------------- | ---- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `process.uptime` | `s` | gauge | seconds since this hive's `hive-c0re` started exporting; a restart reads as a drop to ~0 |
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| `process.uptime` | `s` | gauge | seconds since this hive's `hive-c0re` started exporting; a restart reads as a drop to ~0 |
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| `hyperhive.hive.degraded` | `1` | gauge | `1` while the hive reports itself unhealthy — the same verdict `/health/ready` gives and the swarm status view shows |
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| `hyperhive.hive.degraded` | `1` | gauge | `1` while the hive reports itself unhealthy — the same verdict `/health/ready` gives and the swarm status view shows |
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| `hyperhive.hive.warnings` | `1` | gauge | how many warnings are currently raised, split by a `level` attribute (`warn`, `crit`) |
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| `hyperhive.hive.warnings` | `1` | gauge | how many warnings are currently raised, split by a `level` attribute (`warn`, `crit`) |
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| `hyperhive.hive.warning` | `1` | gauge | `1` per raised warning, with `kind` and `level` attributes; a cleared warning stops reporting |
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| `hyperhive.hive.warning` | `1` | gauge | `1` per raised warning, with `kind` and `level` attributes; a cleared warning stops reporting |
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| `hyperhive.hive.nix_store.utilization` | `1` | gauge | used fraction (0–1) of the filesystem that holds the nix store; no sample when the probe fails |
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| `hyperhive.hive.nix_store.utilization` | `1` | gauge | used fraction (0–1) of the filesystem that holds the nix store; no sample when the probe fails |
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| `hyperhive.hive.pressure.stall` | `us` | counter | host-wide `/proc/pressure/{cpu,memory,io}` `total` in microseconds, split by `resource` (`cpu`, `memory`, `io`) and `kind` (`some`, `full`); a rate is the stalled share of time; no sample without PSI |
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hive-c0re reports both levels of `hyperhive.hive.warnings` every cycle, `0`
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hive-c0re reports both levels of `hyperhive.hive.warnings` every cycle, `0`
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included, so a healthy hive is visible as zeros rather than as missing
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included, so a healthy hive is visible as zeros rather than as missing
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@ -998,6 +998,174 @@
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"sort": "desc"
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"sort": "desc"
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}
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}
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}
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}
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},
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{
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"id": 17,
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"type": "timeseries",
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"title": "Pressure stall: some",
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"description": "Share of time at least one task waited on CPU, memory or IO, averaged over hosts.",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"gridPos": {
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"h": 8,
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"w": 12,
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"x": 0,
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"y": 48
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},
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"targets": [
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{
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"refId": "A",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"expr": "avg by (resource) (rate({__name__=\"hyperhive.hive.pressure.stall\", kind=\"some\", hive=~\"$hive\", \"host.name\"=~\"$host\"}[5m])) / 1000000",
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"legendFormat": "{{resource}}"
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}
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],
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"fieldConfig": {
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"defaults": {
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"unit": "percentunit",
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"color": {
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"mode": "palette-classic"
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},
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"custom": {
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"drawStyle": "line",
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"lineWidth": 1,
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"fillOpacity": 10,
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"showPoints": "never",
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"spanNulls": false,
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"axisSoftMin": 0
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}
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},
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"overrides": []
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},
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"options": {
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"legend": {
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"displayMode": "list",
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"placement": "bottom",
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"showLegend": true,
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"calcs": []
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},
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"tooltip": {
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"mode": "multi",
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"sort": "desc"
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}
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}
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},
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{
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"id": 18,
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"type": "timeseries",
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"title": "Pressure stall: full",
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"description": "Share of time all non-idle tasks waited on memory or IO at once, averaged over hosts.",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"gridPos": {
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"h": 8,
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"w": 12,
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"x": 12,
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"y": 48
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},
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"targets": [
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{
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"refId": "A",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"expr": "avg by (resource) (rate({__name__=\"hyperhive.hive.pressure.stall\", kind=\"full\", resource!=\"cpu\", hive=~\"$hive\", \"host.name\"=~\"$host\"}[5m])) / 1000000",
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"legendFormat": "{{resource}}"
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}
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],
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"fieldConfig": {
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"defaults": {
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"unit": "percentunit",
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"color": {
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"mode": "palette-classic"
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},
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"custom": {
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"drawStyle": "line",
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"lineWidth": 1,
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"fillOpacity": 10,
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"showPoints": "never",
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"spanNulls": false,
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"axisSoftMin": 0
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}
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},
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"overrides": []
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},
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"options": {
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"legend": {
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"displayMode": "list",
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"placement": "bottom",
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"showLegend": true,
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"calcs": []
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},
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"tooltip": {
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"mode": "multi",
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"sort": "desc"
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}
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}
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},
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{
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"id": 19,
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"type": "timeseries",
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"title": "Top 10 containers by memory stall",
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"description": "Agent containers stalled longest on memory, as a share of time.",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"gridPos": {
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"h": 8,
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"w": 12,
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"x": 0,
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"y": 56
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},
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"targets": [
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{
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"refId": "A",
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"datasource": {
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"type": "prometheus",
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"uid": "@datasourceUid@"
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},
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"expr": "topk(10, sum by (\"container.name\") (rate({__name__=\"hyperhive.container.memory.pressure.stall\", kind=\"some\", hive=~\"$hive\", \"host.name\"=~\"$host\"}[5m])) / 1000000)",
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"legendFormat": "{{container.name}}"
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}
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],
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"fieldConfig": {
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"defaults": {
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"unit": "percentunit",
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"color": {
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"mode": "palette-classic"
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},
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"custom": {
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"drawStyle": "line",
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"lineWidth": 1,
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"fillOpacity": 10,
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"showPoints": "never",
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"spanNulls": false,
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"axisSoftMin": 0
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}
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},
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"overrides": []
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},
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"options": {
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"legend": {
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"displayMode": "list",
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"placement": "bottom",
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"showLegend": true,
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"calcs": []
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},
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"tooltip": {
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"mode": "multi",
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"sort": "desc"
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}
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}
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}
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}
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]
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]
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}
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}
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