modified startup log output a little

cmd/exporter.go

@@ -6,7 +6,6 @@ import (
 	"io"
 	"log/slog"
 	"os"
-	"sync"
 	"time"
 
 	"github.com/ncw/directio"
@@ -33,10 +32,7 @@ func NewExporter(conf *Config, alloc *Alloc, metrics *Metrics) *Exporter {
 }
 
 // starts the primary go-routine, which will run the io checks for ever
-func (exp *Exporter) RunIOchecks() *sync.WaitGroup {
+func (exp *Exporter) RunIOchecks() {
-	var wg sync.WaitGroup
-	wg.Add(1)
-
 	go func() {
 		for {
 			var res_r, res_w Result
@@ -64,8 +60,6 @@ func (exp *Exporter) RunIOchecks() *sync.WaitGroup {
 			time.Sleep(time.Duration(exp.conf.Sleeptime) * time.Second)
 		}
 	}()
-
-	return &wg
 }
 
 // call an io measurement and collect time needed

cmd/root.go

@@ -31,7 +31,7 @@ func Run() {
 	alloc := NewAlloc()
 	exporter := NewExporter(conf, alloc, metrics)
 
-	wg := exporter.RunIOchecks()
+	exporter.RunIOchecks()
 
 	http.Handle("/metrics", promhttp.HandlerFor(
 		metrics.registry,
@@ -49,8 +49,6 @@ func Run() {
 	if err := http.ListenAndServe(fmt.Sprintf(":%d", conf.Port), nil); err != nil {
 		log.Fatal(err)
 	}
-
-	wg.Wait()
 }
 
 func report(err error, fd *os.File) bool {