diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index f1b6ef1ab94..09b62ae1c90 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -98,7 +98,7 @@ argp.add_argument('-t', '--track',
 argp.add_argument('-b', '--benchmarks', nargs='+', choices=_AVAILABLE_BENCHMARK_TESTS, default=['bm_cq'])
 argp.add_argument('-d', '--diff_base', type=str)
 argp.add_argument('-r', '--repetitions', type=int, default=1)
-argp.add_argument('-l', '--loops', type=int, default=12)
+argp.add_argument('-l', '--loops', type=int, default=20)
 argp.add_argument('-j', '--jobs', type=int, default=multiprocessing.cpu_count())
 args = argp.parse_args()
 
@@ -247,4 +247,3 @@ def finalize():
 
 
 eintr_be_gone(finalize)
-
diff --git a/tools/profiling/microbenchmarks/speedup.py b/tools/profiling/microbenchmarks/speedup.py
index 8f9023d2c89..b3888e5ea8c 100644
--- a/tools/profiling/microbenchmarks/speedup.py
+++ b/tools/profiling/microbenchmarks/speedup.py
@@ -53,7 +53,7 @@ def speedup(new, old):
     return -(pct - 1)
   else:
     pct = 1
-    while pct < 101:
+    while pct < 100000:
       sp, pp = cmp(new, scale(old, 1 + pct/100.0))
       if sp < 0: break
       if pp > _THRESHOLD: break