diff --git a/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/AppleSiliconCPU.java b/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/AppleSiliconCPU.java
index faf02043..b07f2f45 100644
--- a/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/AppleSiliconCPU.java
+++ b/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/AppleSiliconCPU.java
@@ -6,7 +6,6 @@
 import java.util.HashMap;
 import java.util.List;
 
-import io.quarkus.logging.Log;
 import net.laprun.sustainability.power.SensorMetadata;
 
 class AppleSiliconCPU extends CPU {
@@ -66,7 +65,6 @@ public boolean doneExtractingPowerComponents(String line, HashMap<String, Number
                 throw new IllegalStateException("Cannot parse power value from line '" + line + "'", e);
             }
             powerComponents.put(name, value);
-            Log.infof("POWER component %s = %s", name, value);
         }
 
         // we break out once we 've found all the extracted components (in this case, only cpuShare is not extracted)
diff --git a/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/ProcessRecord.java b/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/ProcessRecord.java
index ec6294cc..8c0da749 100644
--- a/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/ProcessRecord.java
+++ b/backend/src/main/java/net/laprun/sustainability/power/sensors/macos/powermetrics/ProcessRecord.java
@@ -19,8 +19,6 @@ public ProcessRecord(String line) throws IllegalArgumentException {
             // Trim leading/trailing whitespace
             line = line.trim();
 
-            Log.info(line);
-
             // Find first whitespace block after process name (marks start of ID)
             int idStart = findFirstWhitespace(line);
             if (idStart == -1) {
diff --git a/cli/src/main/java/net/laprun/sustainability/cli/PowerMeasurer.java b/cli/src/main/java/net/laprun/sustainability/cli/PowerMeasurer.java
index 446c2851..3ce4633a 100644
--- a/cli/src/main/java/net/laprun/sustainability/cli/PowerMeasurer.java
+++ b/cli/src/main/java/net/laprun/sustainability/cli/PowerMeasurer.java
@@ -45,8 +45,12 @@ public Multi<SensorMeasure> uncheckedStream(long pid) throws Exception {
         return periodicSensorCheck.map(measures -> measures.getOrDefault(registeredPID));
     }
 
+    @SuppressWarnings("UnusedReturnValue")
     public Cancellable startTrackingApp(String appName, long pid, String session) throws Exception {
-        final var tracked = uncheckedStream(pid).subscribe().with(m -> persistence.save(m, appName, session));
+        final var tracked = uncheckedStream(pid)
+                .filter(m -> SensorMeasure.missing != m)
+                .subscribe()
+                .with(m -> persistence.save(m, appName, session));
         manuallyTrackedProcesses.put(pid, tracked);
         return tracked;
     }
diff --git a/persistence/src/main/java/net/laprun/sustainability/power/persistence/Persistence.java b/persistence/src/main/java/net/laprun/sustainability/power/persistence/Persistence.java
index 1c5b5ef6..2f67389c 100644
--- a/persistence/src/main/java/net/laprun/sustainability/power/persistence/Persistence.java
+++ b/persistence/src/main/java/net/laprun/sustainability/power/persistence/Persistence.java
@@ -22,7 +22,7 @@ public Measure save(SensorMeasure measure, String appName, String session) {
         persisted.startTime = measure.startMs();
         persisted.endTime = measure.endMs();
         persisted.persist();
-        Log.infof("Persisted %s, measure duration: %sms", persisted, persisted.endTime - persisted.startTime);
+        Log.debugf("Persisted %s, measure duration: %sms", persisted, persisted.endTime - persisted.startTime);
         return persisted;
     }