getting stats about individual chunks

rsload.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"os"
 	"runtime/pprof"
+	"time"
 )
 
 var chunk_size = 100
@@ -79,9 +80,12 @@ func main() {
 		defer infile.Close()
 	}
 
-	type chunk []value
+	type chunk struct {
+		vals []value
+		t    time.Time
+	}
 	c := make(chan maybe)
-	sent := make(chan chunk, 200)
+	sent := make(chan *chunk, 200)
 	go streamValues(infile, c)
 	go func() {
 		w := bufio.NewWriterSize(conn, 16384)
@@ -89,7 +93,7 @@ func main() {
 			close(sent)
 			fmt.Println("All data transferred. Waiting for the last reply...")
 		}()
-		requests := make(chunk, 0, chunk_size)
+		requests := &chunk{vals: make([]value, 0, chunk_size)}
 		for m := range c {
 			if !m.ok() {
 				fmt.Fprintf(os.Stderr, "InputError: %v\n", m.err())
@@ -99,16 +103,17 @@ func main() {
 				fmt.Fprintf(os.Stderr, "WriteError: %v\n", err)
 			}
 
-			requests = append(requests, m.val())
-			if len(requests) == cap(requests) {
+			requests.vals = append(requests.vals, m.val())
+			if len(requests.vals) == cap(requests.vals) {
+				requests.t = time.Now()
 				if err := w.Flush(); err != nil {
 					fmt.Fprintf(os.Stderr, "FlushError: %v\n", err)
 				}
 				sent <- requests
-				requests = make(chunk, 0, chunk_size)
+				requests = &chunk{vals: make([]value, 0, chunk_size)}
 			}
 		}
-		if len(requests) > 0 {
+		if len(requests.vals) > 0 {
 			if err := w.Flush(); err != nil {
 				fmt.Fprintf(os.Stderr, "FlushError: %v\n", err)
 			}
@@ -119,8 +124,9 @@ func main() {
 	replies, errors := 0, 0
 	responses := make(chan maybe)
 	go streamValues(conn, responses)
+	id := 1
 	for requests := range sent {
-		for _, request := range requests {
+		for _, request := range requests.vals {
 			response := <-responses
 			if response.ok() {
 				switch r := response.val().(type) {
@@ -141,6 +147,10 @@ func main() {
 				fmt.Fprintf(os.Stderr, "ResponseError: %v\n", response.err())
 			}
 		}
+		elapsed := time.Since(requests.t)
+		fmt.Fprintf(os.Stdout, "%d %d %v %v\n", id, len(requests.vals), elapsed,
+			time.Duration(int64(elapsed)/int64(len(requests.vals))))
+		id++
 	}
 	fmt.Println("Last reply received from server.")
 	fmt.Printf("errors: %d, replies: %d\n", errors, replies)