Minor tweak

Author: lemire

benchmarks/bulk-insert-and-query.cc

@@ -199,12 +199,13 @@ Statistics FilterBenchmark(
 #ifdef __linux__
   unified.end(results);
   printf("add    ");
-  printf("cycles: %5.1f/key, instructions: (%5.1f/key, %4.2f/cycle) cache misses: %5.2f/key branch misses: %4.2f/key\n",
+  printf("cycles: %5.1f/key, instructions: (%5.1f/key, %4.2f/cycle) cache misses: %5.2f/key branch misses: %4.2f/key effective frequency %4.2f GHz\n",
     results[0]*1.0/add_count,
     results[1]*1.0/add_count ,
     results[1]*1.0/results[0],
     results[2]*1.0/add_count,
-    results[3]*1.0/add_count);
+    results[3]*1.0/add_count,
+    results[0]*1.0/time);
 #else
   std::cout << "." << std::flush;
 #endif

benchmarks/linux-perf-events.h

@@ -37,7 +37,6 @@ template <int TYPE = PERF_TYPE_HARDWARE> class LinuxEvents {
     const unsigned long flags = 0;
 
     num_events = config_vec.size();
-    uint32_t i = 0;
     for (auto config : config_vec) {
       attribs.config = config;
       int fd = syscall(__NR_perf_event_open, &attribs, pid, cpu, group, flags);
@@ -92,4 +91,4 @@ template <int TYPE = PERF_TYPE_HARDWARE> class LinuxEvents {
     working = false;
   }
 };
-#endif
+#endif