Add admin memStatus panel

1 files changed, 81 insertions, 0 deletions

diff --git a/routers/admin/admin.go b/routers/admin/admin.go
index 25ed8981e0..57a46d1dfe 100644
--- a/routers/admin/admin.go
+++ b/routers/admin/admin.go
@@ -5,7 +5,10 @@
 package admin
 
 import (
+	"fmt"
+	"runtime"
 	"strings"
+	"time"
 
 	"github.com/codegangsta/martini"
 
@@ -14,10 +17,88 @@ import (
 	"github.com/gogits/gogs/modules/middleware"
 )
 
+var sysStatus struct {
+	NumGoroutine int
+
+	// General statistics.
+	MemAllocated string // bytes allocated and still in use
+	MemTotal     string // bytes allocated (even if freed)
+	MemSys       string // bytes obtained from system (sum of XxxSys below)
+	Lookups      uint64 // number of pointer lookups
+	MemMallocs   uint64 // number of mallocs
+	MemFrees     uint64 // number of frees
+
+	// Main allocation heap statistics.
+	HeapAlloc    string // bytes allocated and still in use
+	HeapSys      string // bytes obtained from system
+	HeapIdle     string // bytes in idle spans
+	HeapInuse    string // bytes in non-idle span
+	HeapReleased string // bytes released to the OS
+	HeapObjects  uint64 // total number of allocated objects
+
+	// Low-level fixed-size structure allocator statistics.
+	//	Inuse is bytes used now.
+	//	Sys is bytes obtained from system.
+	StackInuse  string // bootstrap stacks
+	StackSys    string
+	MSpanInuse  string // mspan structures
+	MSpanSys    string
+	MCacheInuse string // mcache structures
+	MCacheSys   string
+	BuckHashSys string // profiling bucket hash table
+	GCSys       string // GC metadata
+	OtherSys    string // other system allocations
+
+	// Garbage collector statistics.
+	NextGC       string // next run in HeapAlloc time (bytes)
+	LastGC       string // last run in absolute time (ns)
+	PauseTotalNs string
+	PauseNs      string // circular buffer of recent GC pause times, most recent at [(NumGC+255)%256]
+	NumGC        uint32
+}
+
+func updateSystemStatus() {
+	m := new(runtime.MemStats)
+	runtime.ReadMemStats(m)
+	sysStatus.NumGoroutine = runtime.NumGoroutine()
+
+	sysStatus.MemAllocated = base.FileSize(int64(m.Alloc))
+	sysStatus.MemTotal = base.FileSize(int64(m.TotalAlloc))
+	sysStatus.MemSys = base.FileSize(int64(m.Sys))
+	sysStatus.Lookups = m.Lookups
+	sysStatus.MemMallocs = m.Mallocs
+	sysStatus.MemFrees = m.Frees
+
+	sysStatus.HeapAlloc = base.FileSize(int64(m.HeapAlloc))
+	sysStatus.HeapSys = base.FileSize(int64(m.HeapSys))
+	sysStatus.HeapIdle = base.FileSize(int64(m.HeapIdle))
+	sysStatus.HeapInuse = base.FileSize(int64(m.HeapInuse))
+	sysStatus.HeapReleased = base.FileSize(int64(m.HeapReleased))
+	sysStatus.HeapObjects = m.HeapObjects
+
+	sysStatus.StackInuse = base.FileSize(int64(m.StackInuse))
+	sysStatus.StackSys = base.FileSize(int64(m.StackSys))
+	sysStatus.MSpanInuse = base.FileSize(int64(m.MSpanInuse))
+	sysStatus.MSpanSys = base.FileSize(int64(m.MSpanSys))
+	sysStatus.MCacheInuse = base.FileSize(int64(m.MCacheInuse))
+	sysStatus.MCacheSys = base.FileSize(int64(m.MCacheSys))
+	sysStatus.BuckHashSys = base.FileSize(int64(m.BuckHashSys))
+	sysStatus.GCSys = base.FileSize(int64(m.GCSys))
+	sysStatus.OtherSys = base.FileSize(int64(m.OtherSys))
+
+	sysStatus.NextGC = base.FileSize(int64(m.NextGC))
+	sysStatus.LastGC = fmt.Sprintf("%.1fs", float64(time.Now().UnixNano()-int64(m.LastGC))/1000/1000/1000)
+	sysStatus.PauseTotalNs = fmt.Sprintf("%.1fs", float64(m.PauseTotalNs/1000/1000/1000))
+	sysStatus.PauseNs = fmt.Sprintf("%.3fs", float64(m.PauseNs[(m.NumGC+255)%256]/1000/1000/1000))
+	sysStatus.NumGC = m.NumGC
+}
+
 func Dashboard(ctx *middleware.Context) {
 	ctx.Data["Title"] = "Admin Dashboard"
 	ctx.Data["PageIsDashboard"] = true
 	ctx.Data["Stats"] = models.GetStatistic()
+	updateSystemStatus()
+	ctx.Data["SysStatus"] = sysStatus
 	ctx.HTML(200, "admin/dashboard")
 }