diff --git a/garlic/pp/osu-latency.nix b/garlic/pp/osu-latency.nix
index c37397e..4b4a4d1 100644
--- a/garlic/pp/osu-latency.nix
+++ b/garlic/pp/osu-latency.nix
@@ -19,6 +19,7 @@ stdenv.mkDerivation {
         cd ${inputResult}/$exp/$unit
         conf=garlic_config.json
         for run in $(ls -d [0-9]* | sort -n); do
+          echo "processing unit=$unit run=$run"
           awk '/^[0-9]+ +[0-9\.]+$/{print $1, $2}' $run/stdout.log | (
             while read -r size latency; do
               jq -cn "{ exp:\"$exp\", unit:\"$unit\", config:inputs, run:$run, \
diff --git a/garlic/pp/timetable.nix b/garlic/pp/timetable.nix
index 811e5ce..9fdbf95 100644
--- a/garlic/pp/timetable.nix
+++ b/garlic/pp/timetable.nix
@@ -19,6 +19,7 @@ stdenv.mkDerivation {
         cd ${inputResult}/$exp/$unit
         conf=garlic_config.json
         for run in $(ls -d [0-9]* | sort -n); do
+          echo "processing unit=$unit run=$run"
           time=$(awk '/^ ?time /{print $2}' $run/stdout.log)
           if [ -z "$time" ]; then
             echo "error: cannot match \"time\" line"