diff --git a/src/job_manager.go b/src/job_manager.go
index 15ba5ad..743a2f1 100644
--- a/src/job_manager.go
+++ b/src/job_manager.go
@@ -19,7 +19,7 @@ type JobManager struct {
 }
 
 func (jm *JobManager) start() {
-	log.Debug("start job ", jm.job.Name, time.Now())
+	log.Info("start job ", jm.job.Name, time.Now())
 	jm.jobStatus = JobStatus{Name: jm.job.Name, tasks: map[string]TaskStatus{}}
 
 	network := jm.scheduler.AcquireNetwork()
@@ -49,7 +49,7 @@ func (jm *JobManager) start() {
 	}
 	jm.scheduler.UpdateProgress(jm.job.Name, Running)
 
-	log.Debug("ready to run job ", jm.job.Name, time.Now())
+	log.Info("ready to run job ", jm.job.Name, time.Now())
 
 	/* bring up containers */
 	for i := range jm.job.Tasks {
diff --git a/src/optimizer.go b/src/optimizer.go
index 3a59c99..d3e57f6 100644
--- a/src/optimizer.go
+++ b/src/optimizer.go
@@ -43,7 +43,7 @@ func (optimizer *Optimizer) feed(job string, utils []int) {
 			}
 
 			postCnt := 0
-			for i := len(utils); i >= 0; i-- {
+			for i := len(utils)-1; i >= 0; i-- {
 				if utils[i] > 15 {
 					break
 				}
diff --git a/src/scheduler_fair.go b/src/scheduler_fair.go
index 508d6f0..4fd6243 100644
--- a/src/scheduler_fair.go
+++ b/src/scheduler_fair.go
@@ -88,7 +88,7 @@ func (scheduler *SchedulerFair) Start() {
 					jm.start()
 				}()
 			} else {
-				log.Info("No more jobs to scheduling", time.Now())
+				log.Debug("No more jobs to scheduling", time.Now())
 				scheduler.schedulingMu.Lock()
 				scheduler.schedulingJobsCnt--
 				scheduler.schedulingMu.Unlock()