diff --git a/jjb/pipeline/voltha/voltha-2.8/voltha-physical-soak-dt-tests.groovy b/jjb/pipeline/voltha/voltha-2.8/voltha-physical-soak-dt-tests.groovy
index 480ea75..a87e300 100644
--- a/jjb/pipeline/voltha/voltha-2.8/voltha-physical-soak-dt-tests.groovy
+++ b/jjb/pipeline/voltha/voltha-2.8/voltha-physical-soak-dt-tests.groovy
@@ -240,7 +240,7 @@
       cd $WORKSPACE/voltha-system-tests
       source ./vst_venv/bin/activate || true
       sleep 60 # we have to wait for prometheus to collect all the information
-      python scripts/sizing.py -o $WORKSPACE/plots -a 0.0.0.0:31301 -n ${volthaNamespace} -s 7200 || true
+      python scripts/sizing.py -o $WORKSPACE/plots -a 0.0.0.0:31301 -n ${volthaNamespace} -s 3600 || true
       """
       archiveArtifacts artifacts: '**/*.log,**/*.gz,**/*.tgz,*.txt,pods/*.txt,plots/*'
     }