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"links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(vm_tcplistener_accepts_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by(instance)", "format": "time_series", "hide": false, "intervalFactor": 1, "legendFormat": "{{instance}}", "range": true, "refId": "A" } ], "title": "TCP connections rate ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 10, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "short", "unitScale": true }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 43 }, "id": 37, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "sum(vm_tcplistener_conns{job=~\"$job\", instance=~\"$instance\"}) by(instance)", "format": "time_series", "hide": false, "intervalFactor": 1, "legendFormat": "{{instance}}", "range": true, "refId": "A" } ], "title": "TCP connections ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "Shows the percent of CPU spent on garbage collection.\n\nIf % is high, then CPU usage can be decreased by changing GOGC to higher values. 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It is recommended to always keep an eye on this metric to avoid unexpected cardinality \"explosions\".\n\nThe higher churn rate is, the more resources required to handle it. Consider to keep the churn rate as low as possible.\n\nGood references to read:\n* https://www.robustperception.io/cardinality-is-key\n* https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 16 }, "id": 66, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "expr": "sum(rate(vm_new_timeseries_created_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]))", "interval": "", "legendFormat": "churn rate", "refId": "A" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "expr": "sum(increase(vm_new_timeseries_created_total{job=~\"$job\", instance=~\"$instance\"}[24h]))", "interval": "", "legendFormat": "new series over 24h", "refId": "B" } ], "title": "Churn rate ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "The percentage of slow inserts comparing to total insertion rate during the last 5 minutes. \n\nThe less value is better. If percentage remains high (>10%) during extended periods of time, then it is likely more RAM is needed for optimal handling of the current number of active time series. \n\nIn general, VictoriaMetrics requires ~1KB or RAM per active time series, so it should be easy calculating the required amounts of RAM for the current workload according to capacity planning docs. But the resulting number may be far from the real number because the required amounts of memory depends on many other factors such as the number of labels per time series and the length of label values. See also https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3976#issuecomment-1476883183", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 10, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "line+area" } }, "decimals": 2, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "transparent" }, { "color": "red", "value": 0.1 } ] }, "unit": "percentunit" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 16 }, "id": 68, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "max(\n rate(vm_slow_row_inserts_total{job=~\"$job\"}[$__rate_interval]) \n / rate(vm_rows_added_to_storage_total{job=~\"$job\"}[$__rate_interval])\n)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "slow inserts percentage", "range": true, "refId": "A" } ], "title": "Slow inserts ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "Merge assist happens when storage can't keep up with merging parts. 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"lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 41 }, "id": 73, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "min" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "vm_free_disk_space_bytes{job=~\"$job\", instance=~\"$instance\"} \n/ ignoring(path) (\n rate(vm_rows_added_to_storage_total{job=~\"$job\", 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"datasource": { "type": "prometheus", "uid": "$ds" }, "expr": "vm_free_disk_space_bytes{job=~\"$job\", instance=~\"$instance\"}", "format": "time_series", "interval": "", "intervalFactor": 1, "legendFormat": "Free", "refId": "B" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "sum(vm_data_size_bytes{job=~\"$job\", instance=~\"$instance\", type=~\"indexdb.*\"})", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "Used (index)", "range": true, "refId": "C" } ], "title": "Disk space usage - datapoints ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "How many datapoints are in RAM queue waiting to be written into storage. 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However, these two actions are separated and controlled via different concurrency limiters. The `max` on this panel can't be changed and always equal to number of CPUs. \n\nWhen `current` hits `max` constantly, it means storage is overloaded and requires more CPU.\n\n", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "decimals": 0, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [ { "matcher": { "id": "byName", "options": "max" }, "properties": [ { "id": "color", "value": { "fixedColor": "#C4162A", "mode": "fixed" } } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 73 }, "id": 59, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull" ], "displayMode": "table", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "prometheus", "uid": "$ds" }, "editorMode": "code", "expr": "max_over_time(vm_concurrent_insert_capacity{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])", "format": "time_series", "interval": "", "intervalFactor": 1, "legendFormat": "max", "range": true, "refId": "A" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "expr": "sum(vm_concurrent_insert_current{job=~\"$job\", instance=~\"$instance\"})", "format": "time_series", "intervalFactor": 1, "legendFormat": "current", "refId": "B" } ], "title": "Concurrent flushes on disk ($instance)", "type": "timeseries" }, { "datasource": { "type": "prometheus", "uid": "$ds" }, "description": "The number of rows merged per second by storage nodes.", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "decimals": 0, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 73 }, "id": 64, "options": { "legend": { "calcs": [ "mean", 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