fine tune parameters

Author: cocolato

Include/internal/pycore_optimizer.h

@@ -20,8 +20,8 @@ extern "C" {
  * PYTHON_JIT_FITNESS_INITIAL and PYTHON_JIT_FITNESS_INITIAL_SIDE */
 #define FITNESS_PER_INSTRUCTION     2
 #define FITNESS_BRANCH_BASE         5
-#define FITNESS_INITIAL             (FITNESS_PER_INSTRUCTION * 1000)
-#define FITNESS_INITIAL_SIDE        (FITNESS_INITIAL / 2)
+#define FITNESS_INITIAL             (UOP_MAX_TRACE_LENGTH * FITNESS_PER_INSTRUCTION)
+#define FITNESS_INITIAL_SIDE        (FITNESS_INITIAL * 3 / 5)
 #define FITNESS_BACKWARD_EDGE       (FITNESS_INITIAL / 10)
 
 /* Exit quality constants for fitness-based trace termination.

Python/optimizer.c

@@ -633,7 +633,7 @@ compute_exit_quality(_Py_CODEUNIT *target_instr, int opcode,
 static inline int32_t
 compute_frame_penalty(const _PyOptimizationConfig *cfg)
 {
-    return (int32_t)cfg->fitness_initial / 10 + 1;
+    return (int32_t)cfg->fitness_initial / 30 + 1;
 }
 
 static int
@@ -2219,7 +2219,11 @@ _PyDumpExecutors(FILE *out)
     fprintf(out, "    node [colorscheme=greys9]\n");
     PyInterpreterState *interp = PyInterpreterState_Get();
     for (size_t i = 0; i < interp->executor_count; i++) {
-        executor_to_gv(interp->executor_ptrs[i], out);
+        _PyExecutorObject *exec = interp->executor_ptrs[i];
+        if (exec->vm_data.code == NULL) {
+            continue;
+        }
+        executor_to_gv(exec, out);
     }
     fprintf(out, "}\n\n");
     return 0;