Benchmark tools [neko]

server/cmd/serve.go

@@ -11,6 +11,7 @@ import (
 	"github.com/spf13/viper"
 
 	"github.com/m1k1o/neko/server/internal/api"
+	"github.com/m1k1o/neko/server/internal/benchmarks"
 	"github.com/m1k1o/neko/server/internal/capture"
 	"github.com/m1k1o/neko/server/internal/config"
 	"github.com/m1k1o/neko/server/internal/desktop"
@@ -176,11 +177,19 @@ func (c *serve) Start(cmd *cobra.Command) {
 	)
 	c.managers.webSocket.Start()
 
+	// Create benchmark collector with target metrics
+	// Typical WebRTC targets: 30 FPS, 2500 kbps
+	benchmarkCollector := benchmarks.NewWebRTCStatsCollector(30.0, 2500.0)
+
+	// Set the benchmark collector in WebRTC manager
+	c.managers.webRTC.SetBenchmarkCollector(benchmarkCollector)
+
 	c.managers.api = api.New(
 		c.managers.session,
 		c.managers.member,
 		c.managers.desktop,
 		c.managers.capture,
+		benchmarkCollector,
 	)
 
 	c.managers.plugins = plugins.New(

server/internal/api/benchmark/handler.go

@@ -0,0 +1,98 @@
+package benchmark
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/m1k1o/neko/server/internal/benchmarks"
+	"github.com/m1k1o/neko/server/pkg/types"
+	"github.com/m1k1o/neko/server/pkg/utils"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+type BenchmarkHandlerCtx struct {
+	logger    zerolog.Logger
+	collector *benchmarks.WebRTCStatsCollector
+}
+
+func New(collector *benchmarks.WebRTCStatsCollector) *BenchmarkHandlerCtx {
+	return &BenchmarkHandlerCtx{
+		logger:    log.With().Str("module", "benchmark-api").Logger(),
+		collector: collector,
+	}
+}
+
+func (h *BenchmarkHandlerCtx) Route(r types.Router) {
+	// Internal benchmark endpoints (unauthenticated)
+	r.Post("/start", h.StartBenchmark)
+}
+
+// StartBenchmarkRequest represents the benchmark start request
+type StartBenchmarkRequest struct {
+	Duration int `json:"duration"` // Duration in seconds
+}
+
+// StartBenchmarkResponse represents the benchmark start response
+type StartBenchmarkResponse struct {
+	Status   string `json:"status"`
+	Duration int    `json:"duration"`
+}
+
+// StartBenchmark handles POST /internal/benchmark/start
+func (h *BenchmarkHandlerCtx) StartBenchmark(w http.ResponseWriter, r *http.Request) error {
+	// Parse duration from query parameter
+	durationParam := r.URL.Query().Get("duration")
+	duration := 10 // default 10 seconds
+
+	if durationParam != "" {
+		if d, err := strconv.Atoi(durationParam); err == nil && d > 0 && d <= 60 {
+			duration = d
+		}
+	}
+
+	h.logger.Info().
+		Int("duration", duration).
+		Msg("starting WebRTC benchmark")
+
+	// Run benchmark collection in background
+	go func() {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Duration(duration+5)*time.Second)
+		defer cancel()
+
+		stats, err := h.collector.CollectStats(ctx, time.Duration(duration)*time.Second)
+		if err != nil {
+			h.logger.Error().Err(err).Msg("benchmark collection failed")
+			return
+		}
+
+		// Export stats to file for kernel-images to read
+		if err := h.collector.ExportStats(stats); err != nil {
+			h.logger.Error().Err(err).Msg("failed to export benchmark stats")
+			return
+		}
+
+		h.logger.Info().
+			Float64("avg_fps", stats.FrameRateFPS.Achieved).
+			Int("viewers", stats.ConcurrentViewers).
+			Msg("benchmark completed and exported")
+	}()
+
+	// Return immediate response
+	response := StartBenchmarkResponse{
+		Status:   "started",
+		Duration: duration,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		return utils.HttpInternalServerError().WithInternalErr(err)
+	}
+
+	return nil
+}

server/internal/api/router.go

@@ -5,41 +5,52 @@ import (
 	"errors"
 	"net/http"
 
+	"github.com/m1k1o/neko/server/internal/api/benchmark"
 	"github.com/m1k1o/neko/server/internal/api/members"
 	"github.com/m1k1o/neko/server/internal/api/room"
 	"github.com/m1k1o/neko/server/internal/api/sessions"
+	"github.com/m1k1o/neko/server/internal/benchmarks"
 	"github.com/m1k1o/neko/server/pkg/auth"
 	"github.com/m1k1o/neko/server/pkg/types"
 	"github.com/m1k1o/neko/server/pkg/utils"
 )
 
 type ApiManagerCtx struct {
-	sessions types.SessionManager
-	members  types.MemberManager
-	desktop  types.DesktopManager
-	capture  types.CaptureManager
-	routers  map[string]func(types.Router)
+	sessions          types.SessionManager
+	members           types.MemberManager
+	desktop           types.DesktopManager
+	capture           types.CaptureManager
+	benchmarkCollector *benchmarks.WebRTCStatsCollector
+	routers           map[string]func(types.Router)
 }
 
 func New(
 	sessions types.SessionManager,
 	members types.MemberManager,
 	desktop types.DesktopManager,
 	capture types.CaptureManager,
+	benchmarkCollector *benchmarks.WebRTCStatsCollector,
 ) *ApiManagerCtx {
 
 	return &ApiManagerCtx{
-		sessions: sessions,
-		members:  members,
-		desktop:  desktop,
-		capture:  capture,
-		routers:  make(map[string]func(types.Router)),
+		sessions:          sessions,
+		members:           members,
+		desktop:           desktop,
+		capture:           capture,
+		benchmarkCollector: benchmarkCollector,
+		routers:           make(map[string]func(types.Router)),
 	}
 }
 
 func (api *ApiManagerCtx) Route(r types.Router) {
 	r.Post("/login", api.Login)
 
+	// Internal benchmark endpoint (unauthenticated)
+	if api.benchmarkCollector != nil {
+		benchmarkHandler := benchmark.New(api.benchmarkCollector)
+		r.Route("/internal/benchmark", benchmarkHandler.Route)
+	}
+
 	// Authenticated area
 	r.Group(func(r types.Router) {
 		r.Use(api.Authenticate)

server/internal/benchmarks/cpu_linux.go

@@ -0,0 +1,147 @@
+//go:build linux
+
+package benchmarks
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// CPUStats represents CPU usage statistics
+type CPUStats struct {
+	User   uint64
+	System uint64
+	Idle   uint64
+	Total  uint64
+}
+
+// GetProcessCPUStats retrieves CPU stats for the current process
+func GetProcessCPUStats() (*CPUStats, error) {
+	// Read /proc/self/stat
+	data, err := os.ReadFile("/proc/self/stat")
+	if err != nil {
+		return nil, fmt.Errorf("failed to read /proc/self/stat: %w", err)
+	}
+
+	// Parse the stat file
+	// Fields: pid comm state ... utime stime ...
+	// utime is field 14 (index 13), stime is field 15 (index 14)
+	fields := strings.Fields(string(data))
+	if len(fields) < 15 {
+		return nil, fmt.Errorf("unexpected /proc/self/stat format")
+	}
+
+	utime, err := strconv.ParseUint(fields[13], 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse utime: %w", err)
+	}
+
+	stime, err := strconv.ParseUint(fields[14], 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse stime: %w", err)
+	}
+
+	return &CPUStats{
+		User:   utime,
+		System: stime,
+		Idle:   0,
+		Total:  utime + stime,
+	}, nil
+}
+
+// GetSystemCPUStats retrieves system-wide CPU stats
+func GetSystemCPUStats() (*CPUStats, error) {
+	file, err := os.Open("/proc/stat")
+	if err != nil {
+		return nil, fmt.Errorf("failed to open /proc/stat: %w", err)
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	if !scanner.Scan() {
+		return nil, fmt.Errorf("failed to read /proc/stat")
+	}
+
+	line := scanner.Text()
+	if !strings.HasPrefix(line, "cpu ") {
+		return nil, fmt.Errorf("unexpected /proc/stat format")
+	}
+
+	// cpu  user nice system idle iowait irq softirq ...
+	fields := strings.Fields(line)
+	if len(fields) < 5 {
+		return nil, fmt.Errorf("not enough fields in /proc/stat")
+	}
+
+	user, _ := strconv.ParseUint(fields[1], 10, 64)
+	nice, _ := strconv.ParseUint(fields[2], 10, 64)
+	system, _ := strconv.ParseUint(fields[3], 10, 64)
+	idle, _ := strconv.ParseUint(fields[4], 10, 64)
+
+	total := user + nice + system + idle
+	if len(fields) >= 8 {
+		iowait, _ := strconv.ParseUint(fields[5], 10, 64)
+		irq, _ := strconv.ParseUint(fields[6], 10, 64)
+		softirq, _ := strconv.ParseUint(fields[7], 10, 64)
+		total += iowait + irq + softirq
+	}
+
+	return &CPUStats{
+		User:   user + nice,
+		System: system,
+		Idle:   idle,
+		Total:  total,
+	}, nil
+}
+
+// CalculateCPUPercent calculates CPU usage percentage from two snapshots
+func CalculateCPUPercent(before, after *CPUStats) float64 {
+	if before == nil || after == nil {
+		return 0.0
+	}
+
+	deltaTotal := after.Total - before.Total
+	if deltaTotal == 0 {
+		return 0.0
+	}
+
+	deltaUsed := (after.User + after.System) - (before.User + before.System)
+	return (float64(deltaUsed) / float64(deltaTotal)) * 100.0
+}
+
+// GetProcessMemoryMB returns current process memory usage in MB
+func GetProcessMemoryMB() float64 {
+	var memStats runtime.MemStats
+	runtime.ReadMemStats(&memStats)
+	return float64(memStats.Alloc) / 1024 / 1024
+}
+
+// GetProcessRSSMemoryMB returns RSS memory from /proc/self/status
+func GetProcessRSSMemoryMB() (float64, error) {
+	file, err := os.Open("/proc/self/status")
+	if err != nil {
+		return 0, fmt.Errorf("failed to open /proc/self/status: %w", err)
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "VmRSS:") {
+			fields := strings.Fields(line)
+			if len(fields) >= 2 {
+				rssKB, err := strconv.ParseFloat(fields[1], 64)
+				if err != nil {
+					return 0, fmt.Errorf("failed to parse RSS: %w", err)
+				}
+				return rssKB / 1024, nil // Convert KB to MB
+			}
+		}
+	}
+
+	return 0, fmt.Errorf("VmRSS not found in /proc/self/status")
+}