Add 5m and 10m load avg alerts and table values (#816)

Co-authored-by: henrygd <hank@henrygd.me>

beszel/internal/agent/system.go

@@ -14,6 +14,7 @@ import (
 	"github.com/shirou/gopsutil/v4/cpu"
 	"github.com/shirou/gopsutil/v4/disk"
 	"github.com/shirou/gopsutil/v4/host"
+	"github.com/shirou/gopsutil/v4/load"
 	"github.com/shirou/gopsutil/v4/mem"
 	psutilNet "github.com/shirou/gopsutil/v4/net"
 )
@@ -77,6 +78,16 @@ func (a *Agent) getSystemStats() system.Stats {
 		systemStats.Cpu = twoDecimals(cpuPct[0])
 	}
 
+	// load average
+	if avgstat, err := load.Avg(); err == nil {
+		systemStats.LoadAvg1 = twoDecimals(avgstat.Load1)
+		systemStats.LoadAvg5 = twoDecimals(avgstat.Load5)
+		systemStats.LoadAvg15 = twoDecimals(avgstat.Load15)
+		slog.Debug("Load average", "5m", systemStats.LoadAvg5, "15m", systemStats.LoadAvg15)
+	} else {
+		slog.Error("Error getting load average", "err", err)
+	}
+
 	// memory
 	if v, err := mem.VirtualMemory(); err == nil {
 		// swap
@@ -240,6 +251,8 @@ func (a *Agent) getSystemStats() system.Stats {
 
 	// update base system info
 	a.systemInfo.Cpu = systemStats.Cpu
+	a.systemInfo.LoadAvg5 = systemStats.LoadAvg5
+	a.systemInfo.LoadAvg15 = systemStats.LoadAvg15
 	a.systemInfo.MemPct = systemStats.MemPct
 	a.systemInfo.DiskPct = systemStats.DiskPct
 	a.systemInfo.Uptime, _ = host.Uptime()

beszel/internal/alerts/alerts.go

@@ -47,6 +47,8 @@ type SystemAlertStats struct {
 	NetSent      float64            `json:"ns"`
 	NetRecv      float64            `json:"nr"`
 	Temperatures map[string]float32 `json:"t"`
+	LoadAvg5     float64            `json:"l5"`
+	LoadAvg15    float64            `json:"l15"`
 }
 
 type SystemAlertData struct {

beszel/internal/alerts/alerts_system.go

@@ -54,6 +54,12 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 			}
 			val = data.Info.DashboardTemp
 			unit = "°C"
+		case "LoadAvg5":
+			val = data.Info.LoadAvg5
+			unit = ""
+		case "LoadAvg15":
+			val = data.Info.LoadAvg15
+			unit = ""
 		}
 
 		triggered := alertRecord.GetBool("triggered")
@@ -190,6 +196,10 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
 					}
 					alert.mapSums[key] += temp
 				}
+			case "LoadAvg5":
+				alert.val += stats.LoadAvg5
+			case "LoadAvg15":
+				alert.val += stats.LoadAvg15
 			default:
 				continue
 			}
@@ -247,6 +257,10 @@ func (am *AlertManager) sendSystemAlert(alert SystemAlertData) {
 	if alert.name == "Disk" {
 		alert.name += " usage"
 	}
+	// format LoadAvg5 and LoadAvg15
+	if after, ok := strings.CutPrefix(alert.name, "LoadAvg"); ok {
+		alert.name = after + "m Load"
+	}
 
 	// make title alert name lowercase if not CPU
 	titleAlertName := alert.name

beszel/internal/entities/system/system.go

@@ -31,6 +31,9 @@ type Stats struct {
 	Temperatures   map[string]float64  `json:"t,omitempty" cbor:"20,keyasint,omitempty"`
 	ExtraFs        map[string]*FsStats `json:"efs,omitempty" cbor:"21,keyasint,omitempty"`
 	GPUData        map[string]GPUData  `json:"g,omitempty" cbor:"22,keyasint,omitempty"`
+	LoadAvg1       float64             `json:"l1,omitempty" cbor:"23,keyasint,omitempty,omitzero"`
+	LoadAvg5       float64             `json:"l5,omitempty" cbor:"24,keyasint,omitempty,omitzero"`
+	LoadAvg15      float64             `json:"l15,omitempty" cbor:"25,keyasint,omitempty,omitzero"`
 }
 
 type GPUData struct {
@@ -89,6 +92,8 @@ type Info struct {
 	GpuPct        float64 `json:"g,omitempty" cbor:"12,keyasint,omitempty"`
 	DashboardTemp float64 `json:"dt,omitempty" cbor:"13,keyasint,omitempty"`
 	Os            Os      `json:"os" cbor:"14,keyasint"`
+	LoadAvg5      float64 `json:"l5,omitempty" cbor:"15,keyasint,omitempty,omitzero"`
+	LoadAvg15     float64 `json:"l15,omitempty" cbor:"16,keyasint,omitempty,omitzero"`
 }
 
 // Final data structure to return to the hub