diff --git a/wrk/measure_all.sh b/wrk/measure_all.sh
index c4fb841..0389740 100755
--- a/wrk/measure_all.sh
+++ b/wrk/measure_all.sh
@@ -6,8 +6,11 @@ if [ ! -d ".git" ] ; then
     exit 1
 fi
 
-SUBJECTS="zig-zap go python python-sanic rust-bythebook rust-clean rust-axum csharp cpp-beast"
+SUBJECTS="$1"
 
+if [ -z "$SUBJECTS" ] ; then
+    SUBJECTS="zig-zap go python python-sanic rust-bythebook rust-clean rust-axum csharp cpp-beast"
+fi
 
 for S in $SUBJECTS; do
     L="$S.perflog"
diff --git a/wrk/samples/req_per_sec_graph.png b/wrk/samples/req_per_sec_graph.png
index e619a8f..c0b031e 100644
Binary files a/wrk/samples/req_per_sec_graph.png and b/wrk/samples/req_per_sec_graph.png differ
diff --git a/wrk/samples/xfer_per_sec_graph.png b/wrk/samples/xfer_per_sec_graph.png
index 53bfe00..c51402e 100644
Binary files a/wrk/samples/xfer_per_sec_graph.png and b/wrk/samples/xfer_per_sec_graph.png differ