git.sesse.net Git - nageru/blob - nageru/basic_stats.cpp

   1 #include "basic_stats.h"
   2 #include "shared/metrics.h"
   3
   4 #include <assert.h>
   5 #include <sys/resource.h>
   6 #include <epoxy/gl.h>
   7
   8 // Epoxy seems to be missing these. Taken from the NVX_gpu_memory_info spec.
   9 #ifndef GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX
  10 #define GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX          0x9047
  11 #endif
  12 #ifndef GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX
  13 #define GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX    0x9048
  14 #endif
  15 #ifndef GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX
  16 #define GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX  0x9049
  17 #endif
  18 #ifndef GPU_MEMORY_INFO_EVICTION_COUNT_NVX
  19 #define GPU_MEMORY_INFO_EVICTION_COUNT_NVX            0x904A
  20 #endif
  21 #ifndef GPU_MEMORY_INFO_EVICTED_MEMORY_NVX
  22 #define GPU_MEMORY_INFO_EVICTED_MEMORY_NVX            0x904B
  23 #endif
  24
  25 using namespace std;
  26 using namespace std::chrono;
  27
  28 bool uses_mlock = false;
  29
  30 BasicStats::BasicStats(bool verbose, bool use_opengl)
  31         : verbose(verbose)
  32 {
  33         start = steady_clock::now();
  34
  35         metric_start_time_seconds = get_timestamp_for_metrics();
  36         global_metrics.add("frames_output_total", &metric_frames_output_total);
  37         global_metrics.add("frames_output_dropped", &metric_frames_output_dropped);
  38         global_metrics.add("start_time_seconds", &metric_start_time_seconds, Metrics::TYPE_GAUGE);
  39         global_metrics.add("memory_used_bytes", &metrics_memory_used_bytes);
  40         global_metrics.add("memory_locked_limit_bytes", &metrics_memory_locked_limit_bytes);
  41
  42         // TODO: It would be nice to compile this out entirely for Kaeru,
  43         // to avoid pulling in the symbols from libGL/Epoxy.
  44         if (use_opengl) {
  45                 gpu_memory_stats.reset(new GPUMemoryStats(verbose));
  46         }
  47 }
  48
  49 void BasicStats::update(int frame_num, int stats_dropped_frames)
  50 {
  51         steady_clock::time_point now = steady_clock::now();
  52         double elapsed = duration<double>(now - start).count();
  53
  54         metric_frames_output_total = frame_num;
  55         metric_frames_output_dropped = stats_dropped_frames;
  56
  57         if (frame_num % 100 != 0) {
  58                 return;
  59         }
  60
  61         if (verbose) {
  62                 printf("%d frames (%d dropped) in %.3f seconds = %.1f fps (%.1f ms/frame)",
  63                         frame_num, stats_dropped_frames, elapsed, frame_num / elapsed,
  64                         1e3 * elapsed / frame_num);
  65         }
  66
  67         // Check our memory usage, to see if we are close to our mlockall()
  68         // limit (if at all set).
  69         rusage used;
  70         if (getrusage(RUSAGE_SELF, &used) == -1) {
  71                 perror("getrusage(RUSAGE_SELF)");
  72                 assert(false);
  73         }
  74         metrics_memory_used_bytes = used.ru_maxrss * 1024;
  75
  76         if (uses_mlock) {
  77                 rlimit limit;
  78                 if (getrlimit(RLIMIT_MEMLOCK, &limit) == -1) {
  79                         perror("getrlimit(RLIMIT_MEMLOCK)");
  80                         assert(false);
  81                 }
  82                 metrics_memory_locked_limit_bytes = limit.rlim_cur;
  83
  84                 if (verbose) {
  85                         if (limit.rlim_cur == 0) {
  86                                 printf(", using %ld MB memory (locked)",
  87                                                 long(used.ru_maxrss / 1024));
  88                         } else {
  89                                 printf(", using %ld / %ld MB lockable memory (%.1f%%)",
  90                                                 long(used.ru_maxrss / 1024),
  91                                                 long(limit.rlim_cur / 1048576),
  92                                                 float(100.0 * (used.ru_maxrss * 1024.0) / limit.rlim_cur));
  93                         }
  94                 }
  95         } else {
  96                 metrics_memory_locked_limit_bytes = 0.0 / 0.0;
  97                 if (verbose) {
  98                         printf(", using %ld MB memory (not locked)",
  99                                         long(used.ru_maxrss / 1024));
 100                 }
 101         }
 102
 103         if (gpu_memory_stats != nullptr) {
 104                 gpu_memory_stats->update();
 105         }
 106
 107         if (verbose) {
 108                 printf("\n");
 109         }
 110 }
 111
 112 GPUMemoryStats::GPUMemoryStats(bool verbose)
 113         : verbose(verbose)
 114 {
 115         // GL_NV_query_memory is exposed but supposedly only works on
 116         // Quadro/Titan cards, so we use GL_NVX_gpu_memory_info even though it's
 117         // formally marked as experimental.
 118         // Intel/Mesa doesn't seem to have anything comparable (at least nothing
 119         // that gets the amount of _available_ memory).
 120         supported = epoxy_has_gl_extension("GL_NVX_gpu_memory_info");
 121         if (supported) {
 122                 global_metrics.add("memory_gpu_total_bytes", &metric_memory_gpu_total_bytes, Metrics::TYPE_GAUGE);
 123                 global_metrics.add("memory_gpu_dedicated_bytes", &metric_memory_gpu_dedicated_bytes, Metrics::TYPE_GAUGE);
 124                 global_metrics.add("memory_gpu_used_bytes", &metric_memory_gpu_used_bytes, Metrics::TYPE_GAUGE);
 125                 global_metrics.add("memory_gpu_evicted_bytes", &metric_memory_gpu_evicted_bytes, Metrics::TYPE_GAUGE);
 126                 global_metrics.add("memory_gpu_evictions", &metric_memory_gpu_evictions);
 127         }
 128 }
 129
 130 void GPUMemoryStats::update()
 131 {
 132         if (!supported) {
 133                 return;
 134         }
 135
 136         GLint total, dedicated, available, evicted, evictions;
 137         glGetIntegerv(GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &total);
 138         glGetIntegerv(GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &dedicated);
 139         glGetIntegerv(GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &available);
 140         glGetIntegerv(GPU_MEMORY_INFO_EVICTED_MEMORY_NVX, &evicted);
 141         glGetIntegerv(GPU_MEMORY_INFO_EVICTION_COUNT_NVX, &evictions);
 142
 143         if (glGetError() == 0) {
 144                 metric_memory_gpu_total_bytes = int64_t(total) * 1024;
 145                 metric_memory_gpu_dedicated_bytes = int64_t(dedicated) * 1024;
 146                 metric_memory_gpu_used_bytes = int64_t(total - available) * 1024;
 147                 metric_memory_gpu_evicted_bytes = int64_t(evicted) * 1024;
 148                 metric_memory_gpu_evictions = evictions;
 149
 150                 if (verbose) {
 151                         printf(", using %d / %d MB GPU memory (%.1f%%)",
 152                                 (total - available) / 1024, total / 1024,
 153                                 float(100.0 * (total - available) / total));
 154                 }
 155         }
 156 }