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It includes anonymous memory and data from recently accessed files (aka page cache).\nThe application's performance will significantly degrade when memory usage is close to 100%.\n\nClick on the line and choose Drilldown to show memory usage per instance", "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": "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": "percentunit", "unitScale": true }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 11 }, "id": 112, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "max(\n max_over_time(process_resident_memory_bytes{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n /\n vm_available_memory_bytes{job=~\"$job\", instance=~\"$instance\"}\n) by(instance)", "interval": "", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "RSS memory % usage", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "bytes", "unitScale": true }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 11 }, "id": 44, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(go_memstats_sys_bytes{job=~\"$job\", instance=~\"$instance\"}) by (instance) + sum(vm_cache_size_bytes{job=~\"$job\", instance=~\"$instance\"}) by (instance)", "format": "time_series", "hide": false, "intervalFactor": 1, "legendFormat": "{{instance}} - 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resident", "range": true, "refId": "D" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "sum(process_resident_memory_anon_bytes{job=~\"$job\", instance=~\"$instance\"}) by (instance)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}} - resident anonymous", "range": true, "refId": "E" } ], "title": "Memory usage", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Share for memory allocated by the process itself. 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"gridPos": { "h": 8, "w": 12, "x": 0, "y": 19 }, "id": 123, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "max(\n max_over_time(process_resident_memory_anon_bytes{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n /\n vm_available_memory_bytes{job=~\"$job\", instance=~\"$instance\"}\n) by(instance)", "interval": "", "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "RSS anonymous memory % usage", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "percentunit", "unitScale": true }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 19 }, "id": 114, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "max(\n rate(process_cpu_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n /\n vm_available_cpu_cores{job=~\"$job\", instance=~\"$instance\"}\n) by(instance)", "format": "time_series", "interval": "", "intervalFactor": 1, "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "CPU % usage", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Shows the percentage of open file descriptors compared to the limit set in the OS.\nReaching the limit of open files can cause various issues and must be prevented.\n\nSee how to change limits here https://medium.com/@muhammadtriwibowo/set-permanently-ulimit-n-open-files-in-ubuntu-4d61064429a", "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": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "decimals": 2, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "percentunit" }, "overrides": [ { "matcher": { "id": "byName", "options": "max" }, "properties": [ { "id": "color", "value": { "fixedColor": "#C4162A", "mode": "fixed" } } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 27 }, "id": 75, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": 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"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" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [ { "matcher": { "id": "byName", "options": "Limit" }, "properties": [ { "id": "color", "value": { "fixedColor": "#F2495C", "mode": "fixed" } } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 27 }, "id": 57, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ 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"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": 0, "y": 43 }, "id": 48, "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": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(process_num_threads{job=~\"$job\", instance=~\"$instance\"}) by(instance)", "format": "time_series", "intervalFactor": 2, "legendFormat": "{{instance}}", "range": true, "refId": "A" } ], "title": "Threads", "type": "timeseries" }, { "datasource": { "type": 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"custom.transform", "value": "negative-Y" } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 43 }, "id": 124, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(process_io_read_syscalls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}} - read calls", "range": true, "refId": "A" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(process_io_write_syscalls_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}} - write calls", "range": true, "refId": "B" } ], "title": "Disk write/read calls", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$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" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 51 }, "id": 49, "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": "victoriametrics-datasource", "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", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "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" }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 51 }, "id": 37, "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", 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"pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "decbits" }, "overrides": [ { "matcher": { "id": "byRegexp", "options": "/read.*/" }, "properties": [ { "id": "custom.transform", "value": "negative-Y" } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 59 }, "id": 127, "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": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(vm_tcplistener_read_bytes_total{job=~\"$job\", 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Increasing GOGC value will increase memory usage, and decrease CPU usage.\n\nTry searching for keyword `GOGC` at https://docs.victoriametrics.com/troubleshooting/ ", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "decimals": 0, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "percentunit" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 59 }, "id": 125, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.2.6", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "max(\n rate(go_gc_cpu_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) \n / rate(process_cpu_seconds_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n ) by(instance)", "format": "time_series", "interval": "", "intervalFactor": 2, "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "CPU spent on GC", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Shows the time goroutines have spent in runnable state before actually running. The lower is better.\n\nHigh values or values exceeding the threshold is usually a sign of insufficient CPU resources or CPU throttling. \n\nVerify that service has enough CPU resources. Otherwise, the service could work unreliably with delays in processing.", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "line" } }, "decimals": 0, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 0.1 } ] }, "unit": "s" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 67 }, "id": 128, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.2.6", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "histogram_quantile(0.99, sum(rate(go_sched_latencies_seconds_bucket{job=~\"$job\"}[$__rate_interval])) by (job, instance, le))", "format": "time_series", "interval": "", "intervalFactor": 2, "legendFormat": "__auto", "range": true, "refId": "A" } ], "title": "Go scheduling latency", "type": "timeseries" } ], "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "refId": "A" } ], "title": "Resource usage", "type": "row" }, { "collapsed": true, "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 31 }, "id": 71, "panels": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Shows the rate and total number of new series created over last 24h.\n\nHigh [churn rate](https://docs.victoriametrics.com/faq/#what-is-high-churn-rate) tightly connected with database performance and may result in unexpected OOM's or slow queries. It is recommended to always keep an eye on this metric to avoid unexpected [cardinality](https://docs.victoriametrics.com/keyconcepts/#cardinality) \"explosions\".\n\nThe higher churn rate is, the more resources required to handle it. Consider to keep the churn rate as low as possible.\n\nGood references to read:\n* https://www.robustperception.io/cardinality-is-key\n* https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 32 }, "id": 66, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(vm_new_timeseries_created_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)", "interval": "", "legendFormat": "{{instance}} - churn rate", "range": true, "refId": "A" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(increase(vm_new_timeseries_created_total{job=~\"$job\", instance=~\"$instance\"}[24h])) by (instance)", "interval": "", "legendFormat": "{{instance}} - new series over 24h", "range": true, "refId": "B" } ], "title": "Churn rate", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "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](https://docs.victoriametrics.com/faq/#what-is-an-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 [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3976#issuecomment-1476883183) for details.", "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": "line+area" } }, "decimals": 2, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "transparent", "value": null }, { "color": "red", "value": 0.1 } ] }, "unit": "percentunit" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 32 }, "id": 68, "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": "victoriametrics-datasource", "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) by (instance)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}}", "range": true, "refId": "A" } ], "title": "Slow inserts %", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Merge assist happens when storage can't keep up with merging parts. This is usually a sign of overload for storage.", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "bars", "fillOpacity": 100, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 40 }, "id": 116, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "sum(increase(vm_assisted_merges_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by(instance, type) > 0", "format": "time_series", "interval": "5m", "intervalFactor": 1, "legendFormat": "{{instance}} - {{type}}", "range": true, "refId": "A" } ], "title": "Assisted merges", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Slow queries rate according to `search.logSlowQueryDuration` flag, which is `5s` by default.", "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" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 40 }, "id": 60, "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": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(vm_slow_queries_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)", "format": "time_series", "hide": false, "intervalFactor": 1, "legendFormat": "{{instance}}", "range": true, "refId": "A" } ], "title": "Slow queries rate", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Shows the percentage of used cache size from the allowed size by type. \nValues close to 100% show the maximum potential utilization.\nValues close to 0% show that cache is underutilized.", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "percentunit" }, "overrides": [] }, "gridPos": { "h": 9, "w": 12, "x": 0, "y": 48 }, "id": 90, "options": { "legend": { "calcs": [ "lastNotNull", "mean", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "vm_cache_size_bytes{job=~\"$job\", instance=~\"$instance\"} / vm_cache_size_max_bytes{job=~\"$job\", instance=~\"$instance\"}", "interval": "", "legendFormat": "{{instance}} - 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Lower is better.", "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": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "max": 1, "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "percentunit" }, "overrides": [] }, "gridPos": { "h": 9, "w": 12, "x": 12, "y": 48 }, "id": 118, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "(\n rate(vm_cache_misses_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n /\n rate(vm_cache_requests_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])\n) > 0", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}} - {{type}}", "range": true, "refId": "A" } ], "title": "Cache miss ratio", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Flags explicitly set to non-default values", "fieldConfig": { "defaults": { "color": { "mode": "thresholds" }, "custom": { "align": "auto", "cellOptions": { "type": "auto" }, "inspect": false }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] } }, "overrides": [ { "matcher": { "id": "byName", "options": "Time" }, "properties": [ { "id": "custom.hidden", "value": true } ] }, { "matcher": { "id": "byName", "options": "Value" }, "properties": [ { "id": "custom.hidden", "value": true } ] }, { "matcher": { "id": "byName", "options": "job" }, "properties": [ { "id": "custom.hidden", "value": true } ] } ] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 57 }, "id": 126, "options": { "cellHeight": "sm", "footer": { "countRows": false, "fields": "", "reducer": [ "sum" ], "show": false }, "showHeader": true }, "pluginVersion": "10.4.2", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "exemplar": false, "expr": "sum(flag{is_set=\"true\", job=~\"$job\", instance=~\"$instance\"}) by(job, instance, name, value)", "format": "table", "instant": true, "legendFormat": "__auto", "range": false, "refId": "A" } ], "title": "Non-default flags", "type": "table" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "VictoriaMetrics limits the number of labels per each metric with `-maxLabelsPerTimeseries` command-line flag.\n\nThis prevents from ingesting metrics with too many labels. 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See more details about dropped labels in logs.", "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" } }, "decimals": 2, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "short" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 12, "y": 57 }, "id": 74, "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "list", "placement": "bottom", "showLegend": false }, "tooltip": { "mode": "multi", "sort": "none" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "exemplar": false, "expr": "sum(increase(vm_metrics_with_dropped_labels_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance)", "format": "time_series", "hide": false, "interval": "", "intervalFactor": 1, "legendFormat": "{{instance}} - limit exceeded", "range": true, "refId": "A" } ], "title": "Labels limit exceeded", "type": "timeseries" }, { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "Shows the number of restarts per job. The chart can be useful to identify periodic process restarts and correlate them with potential issues or anomalies. Normally, processes shouldn't restart unless restart was inited by user. The reason of restarts should be figured out by checking the logs of each specific service. ", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "axisSoftMin": 0, "barAlignment": 0, "drawStyle": "line", "fillOpacity": 0, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "stepAfter", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "decimals": 0, "links": [], "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "green", "value": null }, { "color": "red", "value": 80 } ] }, "unit": "none" }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 65 }, "id": 129, "options": { "legend": { "calcs": [ "lastNotNull" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(changes(vm_app_start_timestamp{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]) > 0) by(job)", "format": "time_series", "instant": false, "legendFormat": "{{job}}", "refId": "A" } ], "title": "Restarts ($job)", "type": "timeseries" } ], "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "refId": "A" } ], "title": "Troubleshooting", "type": "row" }, { "collapsed": true, "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "gridPos": { "h": 1, "w": 24, "x": 0, "y": 32 }, "id": 14, "panels": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "description": "How many datapoints are inserted into storage per second", "fieldConfig": { "defaults": { "color": { "mode": "palette-classic" }, "custom": { "axisBorderShow": false, "axisCenteredZero": false, "axisColorMode": "text", "axisLabel": "", "axisPlacement": "auto", "barAlignment": 0, "drawStyle": "line", "fillOpacity": 10, "gradientMode": "none", "hideFrom": { "legend": false, "tooltip": false, "viz": false }, "insertNulls": false, "lineInterpolation": "linear", "lineWidth": 1, "pointSize": 5, "scaleDistribution": { "type": "linear" }, "showPoints": "never", "spanNulls": false, "stacking": { "group": "A", "mode": "none" }, "thresholdsStyle": { "mode": "off" } }, "links": [], "mappings": [], "min": 0, "thresholds": { "mode": "absolute", "steps": [ { "color": "green" }, { "color": "red", "value": 80 } ] }, "unit": "short", "unitScale": true }, "overrides": [] }, "gridPos": { "h": 8, "w": 12, "x": 0, "y": 13 }, "id": 10, "links": [], "options": { "legend": { "calcs": [ "mean", "lastNotNull", "max" ], "displayMode": "table", "placement": "bottom", "showLegend": true, "sortBy": "Last *", "sortDesc": true }, "tooltip": { "mode": "multi", "sort": "desc" } }, "pluginVersion": "9.1.0", "targets": [ { "datasource": { "type": "victoriametrics-datasource", "uid": "$ds" }, "editorMode": "code", "expr": "sum(rate(vm_rows_inserted_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (instance, type) > 0", "format": "time_series", "hide": false, "intervalFactor": 1, "legendFormat": "{{instance}} - 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