{ "annotations": { "list": [ { "builtIn": 1, "datasource": { "type": "grafana", "uid": "-- Grafana --" }, "enable": true, "hide": true, "iconColor": "rgba(0, 211, 255, 1)", "name": "Annotations & Alerts", "target": { "limit": 100, "matchAny": false, "tags": [], "type": "dashboard" }, "type": "dashboard" } ] }, "editable": true, "fiscalYearStartMonth": 0, "graphTooltip": 0, "id": 1171, "links": [], "liveNow": false, "panels": [ { "collapsed": false, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 0 }, "id": 21, "panels": [], "title": "Runtime Metrics", "type": "row" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 1 }, "id": 23, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "histogram_quantile(0.95, sum by(namespace, pod, container, name, component, participant) (rate(daml_executor_runtime_duration_seconds{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval])))", "legendFormat": "{{pod}} - {{container}} - {{name}} / {{component}} {{participant}}", "range": true, "refId": "A" } ], "title": "Task Run Duration (p95}", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 1 }, "id": 24, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without() (histogram_avg(rate(daml_executor_runtime_duration_seconds{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval])))", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Task Run Duration (average}", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 9 }, "id": 28, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "histogram_quantile(0.95, sum by(namespace, pod, container, name, component, participant) (rate(daml_executor_runtime_idle_duration_seconds{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval])))", "legendFormat": "{{pod}} - {{container}} - {{name}} / {{component}} {{participant}}", "range": true, "refId": "A" } ], "title": "Task Idle Duration (p95}", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 9 }, "id": 29, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without() (histogram_avg(rate(daml_executor_runtime_idle_duration_seconds{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval])))", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Task Idle Duration (average}", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "tasks / s" }, "overrides": [] }, "gridPos": { "h": 13, "w": 12, "x": 0, "y": 17 }, "id": 26, "options": { "legend": { "calcs": [], "displayMode": "list", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without($group_without) (rate(daml_executor_runtime_submitted_total{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval]))\n", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Submitted Tasks", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "tasks / s" }, "overrides": [] }, "gridPos": { "h": 13, "w": 12, "x": 12, "y": 17 }, "id": 30, "options": { "legend": { "calcs": [], "displayMode": "list", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without($group_without) (rate(daml_executor_runtime_completed_total{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval]))\n", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Completed Tasks", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "none" }, "overrides": [] }, "gridPos": { "h": 12, "w": 24, "x": 0, "y": 30 }, "id": 27, "options": { "legend": { "calcs": [], "displayMode": "list", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without($group_without) (daml_executor_runtime_running{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"})\n", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Running Tasks", "type": "timeseries" }, { "collapsed": false, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 42 }, "id": 6, "panels": [], "title": "Common Metrics", "type": "row" }, { "datasource": { "type": "prometheus", "uid": "prometheus" }, "gridPos": { "h": 6, "w": 6, "x": 0, "y": 43 }, "id": 19, "options": { "code": { "language": "plaintext", "showLineNumbers": false, "showMiniMap": false }, "content": "# Common Executor Service Metrics\n\nExecutor Service Metrics that are common between thread pools and fork join pools.\nThese metrics are outsourced from the Executor Service itself.", "mode": "markdown" }, "pluginVersion": "11.1.0", "title": "Info", "type": "text" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] } }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 49 }, "id": 2, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_pool_size{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "legendFormat": "{{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "A" } ], "title": "Pool Size", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "axisSoftMin": 0, "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] } }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 58 }, "id": 3, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": false }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_threads_active{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "legendFormat": "{{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "A" } ], "title": "Active Threads", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "axisSoftMin": 0, "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] } }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 67 }, "id": 4, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": false }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_tasks_queued{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "legendFormat": "{{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "A" } ], "title": "Queued Tasks", "type": "timeseries" }, { "collapsed": false, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 76 }, "id": 8, "panels": [], "title": "Thread Pool Metrics", "type": "row" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] } }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 77 }, "id": 9, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_pool_core{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "legendFormat": "Core - {{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "A" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_pool_max{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "hide": false, "legendFormat": "Max - {{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "B" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "daml_executor_pool_largest{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}", "hide": false, "legendFormat": "Largest - {{pod}} -- {{name}} -- {{type}}", "range": true, "refId": "C" } ], "title": "Pool Sizes", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "tasks/s" }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 86 }, "id": 10, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without($group_without) (rate(daml_executor_tasks_submitted{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval]))", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Tasks Submitted", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "auto", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "tasks/s" }, "overrides": [] }, "gridPos": { "h": 9, "w": 24, "x": 0, "y": 95 }, "id": 31, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "right", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "targets": [ { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "editorMode": "code", "expr": "sum without($group_without) (rate(daml_executor_tasks_completed{namespace=\"$namespace\", pod=~\"$pod\", container=\"$container\", name=~\"$name\"}[$__rate_interval]))", "hide": false, "legendFormat": "__auto", "range": true, "refId": "B" } ], "title": "Tasks Completed", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "${datasource}" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": 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