diff --git a/samples/gpu/performance/performance.cpp b/samples/gpu/performance/performance.cpp
index ebf988933f..f8a0fbe72b 100644
--- a/samples/gpu/performance/performance.cpp
+++ b/samples/gpu/performance/performance.cpp
@@ -139,13 +139,9 @@ int CV_CDECL cvErrorCallback(int /*status*/, const char* /*func_name*/,
 int main(int argc, char** argv)
 {
     if (argc < 2)
-    {
         cout << "Usage: performance_gpu <working_dir_with_slash>\n\n";
-    }
     else
-    {
         TestSystem::instance().setWorkingDir(argv[1]);
-    }
 
     redirectError(cvErrorCallback);
     TestSystem::instance().run();
diff --git a/samples/gpu/performance/tests.cpp b/samples/gpu/performance/tests.cpp
index 304f606c83..6d7e93c2d2 100644
--- a/samples/gpu/performance/tests.cpp
+++ b/samples/gpu/performance/tests.cpp
@@ -167,32 +167,32 @@ TEST(cornerHarris)
 }
 
 
-TEST(integral)
-{
-    Mat src, sum;
-    gpu::GpuMat d_src, d_sum, d_buf;
-
-    int size = 4000;
-
-    gen(src, size, size, CV_8U, 0, 256);
-    sum.create(size + 1, size + 1, CV_32S);
-
-    d_src = src;
-    d_sum.create(size + 1, size + 1, CV_32S);
-
-    for (int i = 0; i < 5; ++i)
-    {
-        SUBTEST << "size " << size << ", 8U";
-
-        CPU_ON;
-        integral(src, sum);
-        CPU_OFF;
-
-        GPU_ON;
-        gpu::integralBuffered(d_src, d_sum, d_buf);
-        GPU_OFF;
-    }
-}
+//TEST(integral)
+//{
+//    Mat src, sum;
+//    gpu::GpuMat d_src, d_sum, d_buf;
+//
+//    int size = 4000;
+//
+//    gen(src, size, size, CV_8U, 0, 256);
+//    sum.create(size + 1, size + 1, CV_32S);
+//
+//    d_src = src;
+//    d_sum.create(size + 1, size + 1, CV_32S);
+//
+//    for (int i = 0; i < 5; ++i)
+//    {
+//        SUBTEST << "size " << size << ", 8U";
+//
+//        CPU_ON;
+//        integral(src, sum);
+//        CPU_OFF;
+//
+//        GPU_ON;
+//        gpu::integralBuffered(d_src, d_sum, d_buf);
+//        GPU_OFF;
+//    }
+//}
 
 
 TEST(norm)
@@ -202,20 +202,20 @@ TEST(norm)
 
     for (int size = 2000; size <= 4000; size += 1000)
     {
-        SUBTEST << "size " << size << ", 32FC4";
+        SUBTEST << "size " << size << ", 32FC4, NORM_INF";
 
         gen(src, size, size, CV_32FC4, Scalar::all(0), Scalar::all(1));
 
         CPU_ON;
         for (int i = 0; i < 5; ++i)
-            norm(src, NORM_L2);
+            norm(src, NORM_INF);
         CPU_OFF;
 
         d_src = src;
 
         GPU_ON;
         for (int i = 0; i < 5; ++i)
-            gpu::norm(d_src, NORM_L2, d_buf);
+            gpu::norm(d_src, NORM_INF, d_buf);
         GPU_OFF;
     }
 }