Add admin memStatus panel

3 files changed, 115 insertions, 2 deletions

diff --git a/README.md b/README.md
index cbd1f588df..a9ab7fe498 100644
--- a/README.md
+++ b/README.md
@@ -42,8 +42,9 @@ There are two ways to install Gogs:
 
 ## Acknowledgments
 
-- Mail service is based on [WeTalk](https://github.com/beego/wetalk).
 - Logo is inspired by [martini](https://github.com/martini-contrib).
+- Mail service is based on [WeTalk](https://github.com/beego/wetalk).
+- System Monitor Status is based on [GoBlog](https://github.com/fuxiaohei/goblog).
 
 ## Contributors
 
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")
 }
 
diff --git a/templates/admin/dashboard.tmpl b/templates/admin/dashboard.tmpl
index 6088487d62..0bebf8318f 100644
--- a/templates/admin/dashboard.tmpl
+++ b/templates/admin/dashboard.tmpl
@@ -15,10 +15,41 @@
 
         <div class="panel panel-default">
             <div class="panel-heading">
-                System Status
+                System Monitor Status
             </div>
 
             <div class="panel-body">
+                <div>Current Goroutines: <b>{{.SysStatus.NumGoroutine}}</b></div>
+                <hr/>
+                <div>Current Memory Usage: <b>{{.SysStatus.MemAllocated}}</b></div>
+                <div>Total Memory Allocated: <b>{{.SysStatus.MemTotal}}</b></div>
+                <div>Memory Obtained: <b>{{.SysStatus.MemSys}}</b></div>
+                <div>Pointer Lookup Times: <b>{{.SysStatus.Lookups}}</b></div>
+                <div>Memory Allocate Times: <b>{{.SysStatus.MemMallocs}}</b></div>
+                <div>Memory Free Times: <b>{{.SysStatus.MemFrees}}</b></div>
+                <hr/>
+                <div>Current Heap Usage: <b>{{.SysStatus.HeapAlloc}}</b></div>
+                <div>Heap Memory Obtained: <b>{{.SysStatus.HeapSys}}</b></div>
+                <div>Heap Memory Idle: <b>{{.SysStatus.HeapIdle}}</b></div>
+                <div>Heap Memory In Use: <b>{{.SysStatus.HeapInuse}}</b></div>
+                <div>Heap Memory Released: <b>{{.SysStatus.HeapReleased}}</b></div>
+                <div>Heap Objects: <b>{{.SysStatus.HeapObjects}}</b></div>
+                <hr/>
+                <div>Bootstrap Stack Usage: <b>{{.SysStatus.StackInuse}}</b></div>
+                <div>Stack Memory Obtained: <b>{{.SysStatus.StackSys}}</b></div>
+                <div>MSpan Structures Usage: <b>{{.SysStatus.MSpanInuse}}</b></div>
+                <div>MSpan Structures Obtained: <b>{{.SysStatus.HeapSys}}</b></div>
+                <div>MCache Structures Usage: <b>{{.SysStatus.MCacheInuse}}</b></div>
+                <div>MCache Structures Obtained: <b>{{.SysStatus.MCacheSys}}</b></div>
+                <div>Profiling Bucket Hash Table Obtained: <b>{{.SysStatus.BuckHashSys}}</b></div>
+                <div>GC Metadada Obtained: <b>{{.SysStatus.GCSys}}</b></div>
+                <div>Other System Allocation Obtained: <b>{{.SysStatus.OtherSys}}</b></div>
+                <hr/>
+                <div>Next GC Recycle: <b>{{.SysStatus.NextGC}}</b></div>
+                <div>Last GC Time: <b>{{.SysStatus.LastGC}} ago</b></div>
+                <div>Total GC Pause: <b>{{.SysStatus.PauseTotalNs}}</b></div>
+                <div>Last GC Pause: <b>{{.SysStatus.PauseNs}}</b></div>
+                <div>GC Times: <b>{{.SysStatus.NumGC}}</b></div>
             </div>
         </div>
     </div>