diff --git a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
index d7e3a9cf47d840c932908bb8069944d81256ab6c..702a14d14ea085be8d18c7d97df07cc71d1e7f7f 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
@@ -419,18 +419,18 @@ static void BM_PumpUnbalancedUnary_Trickle(benchmark::State& state) {
 }
 
 static void UnaryTrickleArgs(benchmark::internal::Benchmark* b) {
+  // A selection of interesting numbers
   const int cli_1024k = 1024 * 1024;
   const int cli_32M = 32 * 1024 * 1024;
   const int svr_256k = 256 * 1024;
   const int svr_4M = 4 * 1024 * 1024;
   const int svr_64M = 64 * 1024 * 1024;
   for (int bw = 64; bw <= 128 * 1024 * 1024; bw *= 16) {
-    b->Args({bw, cli_1024k, svr_256k});
-    b->Args({bw, cli_1024k, svr_4M});
-    b->Args({bw, cli_1024k, svr_64M});
-    b->Args({bw, cli_32M, svr_256k});
-    b->Args({bw, cli_32M, svr_4M});
-    b->Args({bw, cli_32M, svr_64M});
+    for (auto svr : {svr_256k, svr_4M, svr_64M}) {
+      for (auto cli: {cli_1024k, cli_32M}) {
+        b->Args({cli, svr, bw});
+      }
+    }
   }
 }
 BENCHMARK(BM_PumpUnbalancedUnary_Trickle)->Apply(UnaryTrickleArgs);
diff --git a/tools/profiling/microbenchmarks/bm_json.py b/tools/profiling/microbenchmarks/bm_json.py
index f4d628e11f04bb5052efac8573211d89ff319c7e..49a37072208afa35f29159e008da7f6e5b64b4f5 100644
--- a/tools/profiling/microbenchmarks/bm_json.py
+++ b/tools/profiling/microbenchmarks/bm_json.py
@@ -56,7 +56,7 @@ _BM_SPECS = {
   },
   'BM_PumpUnbalancedUnary_Trickle': {
     'tpl': [],
-    'dyn': ['request_size', 'bandwidth_kilobits'],
+    'dyn': ['cli_req_size', 'svr_req_size', 'bandwidth_kilobits'],
   },
   'BM_ErrorStringOnNewError': {
     'tpl': ['fixture'],