diff options
| -rw-r--r-- | snappy-test.cc | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/snappy-test.cc b/snappy-test.cc index 223cd92..6a0611e 100644 --- a/snappy-test.cc +++ b/snappy-test.cc @@ -204,27 +204,32 @@ void Benchmark::Run() { benchmark_runs[run].cpu_time_us = benchmark_cpu_time_us; } + string heading = StringPrintf("%s/%d", name_.c_str(), test_case_num); + string human_readable_speed; + nth_element(benchmark_runs, benchmark_runs + kMedianPos, benchmark_runs + kNumRuns, BenchmarkCompareCPUTime()); int64 real_time_us = benchmark_runs[kMedianPos].real_time_us; int64 cpu_time_us = benchmark_runs[kMedianPos].cpu_time_us; - int64 bytes_per_second = benchmark_bytes_processed * 1000000 / cpu_time_us; - - string heading = StringPrintf("%s/%d", name_.c_str(), test_case_num); - string human_readable_speed; - if (bytes_per_second < 1024) { - human_readable_speed = StringPrintf("%dB/s", bytes_per_second); - } else if (bytes_per_second < 1024 * 1024) { - human_readable_speed = StringPrintf( - "%.1fkB/s", bytes_per_second / 1024.0f); - } else if (bytes_per_second < 1024 * 1024 * 1024) { - human_readable_speed = StringPrintf( - "%.1fMB/s", bytes_per_second / (1024.0f * 1024.0f)); + if (cpu_time_us <= 0) { + human_readable_speed = "?"; } else { - human_readable_speed = StringPrintf( - "%.1fGB/s", bytes_per_second / (1024.0f * 1024.0f * 1024.0f)); + int64 bytes_per_second = + benchmark_bytes_processed * 1000000 / cpu_time_us; + if (bytes_per_second < 1024) { + human_readable_speed = StringPrintf("%dB/s", bytes_per_second); + } else if (bytes_per_second < 1024 * 1024) { + human_readable_speed = StringPrintf( + "%.1fkB/s", bytes_per_second / 1024.0f); + } else if (bytes_per_second < 1024 * 1024 * 1024) { + human_readable_speed = StringPrintf( + "%.1fMB/s", bytes_per_second / (1024.0f * 1024.0f)); + } else { + human_readable_speed = StringPrintf( + "%.1fGB/s", bytes_per_second / (1024.0f * 1024.0f * 1024.0f)); + } } fprintf(stderr, |