reproduce dmon lag

2026-06-24 07:22:04 +08:00 · 2020-11-20 16:37:32 +00:00
parent 7478b21e2e
commit 52673f0532
2 changed files with 164 additions and 0 deletions
@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+from selfdrive.manager import start_managed_process, kill_managed_process
+import random
+import os
+import time
+import cereal.messaging as messaging
+
+if __name__ == "__main__":
+  logmessage = messaging.sub_sock('logMessage')
+  hitcount = 0
+  hits = []
+  ln = 0
+  while 1:
+    print("\n***** loop %d with hit count %d %r\n" % (ln, hitcount, hits))
+    start_managed_process("camerad")
+    #time.sleep(random.random())
+    os.environ['LOGPRINT'] = "debug"
+    start_managed_process("dmonitoringmodeld")
+    os.environ['LOGPRINT'] = ""
+
+    # drain all old messages
+    messaging.drain_sock(logmessage, False)
+
+    done = False
+    cnt = 0
+    best = 100
+    for i in range(100):
+      ret = messaging.drain_sock(logmessage, True)
+      for r in ret:
+        if 'dmonitoring process' in r.logMessage:
+          cnt += 1
+          done = r.logMessage
+          ms = float(done.split('dmonitoring process: ')[1].split("ms")[0])
+          best = min(ms, best)
+      if cnt >= 5:
+        break
+
+    print(ln, best, done)
+    #if best > 16:
+    if best > 4:
+      print("HIT HIT HIT")
+      hitcount += 1
+      hits.append(best)
+
+
+    #start_managed_process("modeld")
+    kill_managed_process("dmonitoringmodeld")
+    #kill_managed_process("modeld")
+    kill_managed_process("camerad")
+    ln += 1
+
+    if hitcount >= 1:
+      break
+
@@ -0,0 +1,110 @@
+// clang++ -mcpu=cortex-a57 -O2 repro.cc
+
+#include <vector>
+#include <time.h>
+#include <sched.h>
+
+static inline double millis_since_boot() {
+  struct timespec t;
+  clock_gettime(CLOCK_BOOTTIME, &t);
+  return t.tv_sec * 1000.0 + t.tv_nsec * 1e-6;
+}
+
+int set_realtime_priority(int level) {
+  long tid = getpid();
+
+  // should match python using chrt
+  struct sched_param sa;
+  memset(&sa, 0, sizeof(sa));
+  sa.sched_priority = level;
+  return sched_setscheduler(tid, SCHED_FIFO, &sa);
+}
+
+#define MODEL_WIDTH 320
+#define MODEL_HEIGHT 640
+#define input_lambda(x) (x - 128.f) * 0.0078125f
+
+template <class T>
+static inline T *get_buffer(std::vector<T> &buf, const size_t size) {
+  if (buf.size() < size) {
+    buf.resize(size);
+  }
+  return buf.data();
+}
+
+void inner(uint8_t *resized_buf, float *net_input_buf) {
+  int resized_width = MODEL_WIDTH;
+  int resized_height = MODEL_HEIGHT;
+
+  // one shot conversion, O(n) anyway
+  // yuvframe2tensor, normalize
+  for (int r = 0; r < MODEL_HEIGHT/2; r++) {
+    for (int c = 0; c < MODEL_WIDTH/2; c++) {
+      // Y_ul
+      net_input_buf[(c*MODEL_HEIGHT/2) + r] = input_lambda(resized_buf[(2*r*resized_width) + (2*c)]);
+      // Y_ur
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (2*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width) + (2*c+1)]);
+      // Y_dl
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + ((MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width+1) + (2*c)]);
+      // Y_dr
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (3*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width+1) + (2*c+1)]);
+      // U
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (4*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(resized_width*resized_height) + (r*resized_width/2) + c]);
+      // V
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (5*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(resized_width*resized_height) + ((resized_width/2)*(resized_height/2)) + (r*resized_width/2) + c]);
+    }
+  }
+}
+
+float trial() {
+  std::vector<uint8_t> vec_resized_buf;
+  std::vector<float> vec_net_input_buf;
+
+  int resized_width = MODEL_WIDTH;
+  int resized_height = MODEL_HEIGHT;
+  uint8_t *resized_buf = get_buffer(vec_resized_buf, resized_width*resized_height*3/2);
+
+  int yuv_buf_len = (MODEL_WIDTH/2) * (MODEL_HEIGHT/2) * 6; // Y|u|v -> y|y|y|y|u|v
+  float *net_input_buf = get_buffer(vec_net_input_buf, yuv_buf_len);
+
+  float avg = 0.0;
+  for (int i = 0; i < 20; i++) {
+    //__builtin___clear_cache((char*)resized_buf, (char*)resized_buf + (resized_width*resized_height*3/2));
+    //__builtin___clear_cache((char*)net_input_buf, (char*)net_input_buf + yuv_buf_len);
+
+    double s4 = millis_since_boot();
+    inner(resized_buf, net_input_buf);
+    double s5 = millis_since_boot();
+    avg += s5-s4;
+  }
+
+  avg /= 20;
+  if (avg > 5) {
+    printf("HIT %f\n", avg);
+    printf("BAD\n");
+
+    for (int i = 0; i < 200; i++) {
+      //__builtin___clear_cache((char*)resized_buf, (char*)resized_buf + (resized_width*resized_height*3/2));
+      //__builtin___clear_cache((char*)net_input_buf, (char*)net_input_buf + yuv_buf_len);
+
+      double s4 = millis_since_boot();
+      inner(resized_buf, net_input_buf);
+      double s5 = millis_since_boot();
+      printf("%.2f   ", s5-s4);
+    }
+    printf("\n");
+
+    exit(0);
+  }
+  return avg;
+}
+
+int main() {
+  set_realtime_priority(51);
+
+  while (1) {
+    float ret = trial();
+    printf("got %f\n", ret);
+  }
+}
+