diff --git a/garlic/ds/ctf/mode.nix b/garlic/ds/ctf/mode.nix
new file mode 100644
index 0000000..d3348eb
--- /dev/null
+++ b/garlic/ds/ctf/mode.nix
@@ -0,0 +1,23 @@
+{
+  stdenv
+, python3
+, gzip
+}:
+
+resultTree:
+
+stdenv.mkDerivation {
+  name = "ctf-mode.json.gz";
+  preferLocalBuild = true;
+  src = ./mode.py;
+  phases = [ "unpackPhase" "installPhase" ];
+
+  unpackPhase = ''
+    cp $src mode.py
+  '';
+
+  buildInputs = [ python3 gzip ];
+  installPhase = ''
+    python mode.py ${resultTree} | gzip > $out
+  '';
+}
diff --git a/garlic/ds/ctf/mode.py b/garlic/ds/ctf/mode.py
new file mode 100644
index 0000000..669508f
--- /dev/null
+++ b/garlic/ds/ctf/mode.py
@@ -0,0 +1,83 @@
+import json, re, sys, os, glob
+from os import path
+
+def eprint(*args, **kwargs):
+	print(*args, file=sys.stderr, flush=True, **kwargs)
+
+def process_run(tree, runPath):
+
+	ctf_mode = {}
+
+	with open(".garlic/time_mode_runtime.csv", "r") as f:
+		ctf_mode['runtime'] = float(f.readline())
+
+	with open(".garlic/time_mode_dead.csv", "r") as f:
+		ctf_mode['dead'] = float(f.readline())
+
+	with open(".garlic/time_mode_task.csv", "r") as f:
+		ctf_mode['task'] = float(f.readline())
+
+	tree['ctf_mode'] = ctf_mode
+
+	with open("stdout.log", "r") as f:
+		lines = [line.strip() for line in f.readlines()]
+
+	time_line = None
+	for line in lines:
+
+		if re.match(r'^ ?time .*', line):
+			time_line = line
+			break
+
+	if time_line is None:
+		eprint("missing time line, aborting")
+		eprint("stdout file = {}/stdout.log".format(runPath))
+		exit(1)
+
+	time_str = time_line.split()[1]
+
+	tree['time'] = float(time_str)
+
+	print(json.dumps(tree))
+
+def process_result_tree(resultTree):
+
+	eprint("processing resultTree: " + resultTree)
+
+	os.chdir(resultTree)
+
+	experiments = glob.glob(resultTree + "/*-experiment")
+
+	for exp in glob.glob("*-experiment"):
+		eprint("found experiment: " + exp)
+		expPath = path.join(resultTree, exp)
+		os.chdir(expPath)
+
+		for unit in glob.glob("*-unit"):
+			eprint("found unit: " + unit)
+			unitPath = path.join(resultTree, exp, unit)
+			os.chdir(unitPath)
+
+			with open('garlic_config.json') as json_file:
+				garlic_conf = json.load(json_file)
+
+			tree = {"exp":exp, "unit":unit, "config":garlic_conf}
+
+			for i in range(garlic_conf['loops']):
+				run = str(i + 1)
+				runPath = path.join(resultTree, exp, unit, run)
+				if path.isdir(runPath) == False:
+					eprint("missing run {}, aborting".format(run))
+					exit(1)
+
+				tree["run"] = run
+				os.chdir(runPath)
+
+				process_run(tree, runPath)
+
+
+if len(sys.argv) != 2:
+	eprint("usage: python {} <resultTree>".format(argv[0]))
+	exit(1)
+
+process_result_tree(sys.argv[1])
diff --git a/garlic/ds/index.nix b/garlic/ds/index.nix
index 1c2c28e..b0dc7ec 100644
--- a/garlic/ds/index.nix
+++ b/garlic/ds/index.nix
@@ -17,4 +17,6 @@
   };
 
   perf.stat = callPackage ./perf/stat.nix {};
+
+  ctf.mode = callPackage ./ctf/mode.nix {};
 }