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bpo-46072: Add some frame stats. (GH-31060)

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Mark Shannon 2022-02-02 11:01:33 +00:00 • committed by GitHub
parent a05866ce3e
commit 187930f74c
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7 changed files with 16 additions and 1 deletions
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2
Include/internal/pycore_code.h
View file

@ -303,6 +303,8 @@ typedef struct _opcode_stats {
typedef struct _call_stats { typedef struct _call_stats {
uint64_t inlined_py_calls; uint64_t inlined_py_calls;
uint64_t pyeval_calls; uint64_t pyeval_calls;
uint64_t frames_pushed;
uint64_t frame_objects_created;
} CallStats; } CallStats;
typedef struct _object_stats { typedef struct _object_stats {

1
Objects/frameobject.c
View file

@ -794,6 +794,7 @@ init_frame(InterpreterFrame *frame, PyFunctionObject *func, PyObject *locals)
PyFrameObject* PyFrameObject*
_PyFrame_New_NoTrack(PyCodeObject *code) _PyFrame_New_NoTrack(PyCodeObject *code)
{ {
CALL_STAT_INC(frame_objects_created);
int slots = code->co_nlocalsplus + code->co_stacksize; int slots = code->co_nlocalsplus + code->co_stacksize;
PyFrameObject *f = PyObject_GC_NewVar(PyFrameObject, &PyFrame_Type, slots); PyFrameObject *f = PyObject_GC_NewVar(PyFrameObject, &PyFrame_Type, slots);
if (f == NULL) { if (f == NULL) {

5
Python/ceval.c
View file

@ -2242,6 +2242,7 @@ handle_eval_breaker:
if (new_frame == NULL) { if (new_frame == NULL) {
goto error; goto error;
} }
CALL_STAT_INC(frames_pushed);
_PyFrame_InitializeSpecials(new_frame, getitem, _PyFrame_InitializeSpecials(new_frame, getitem,
NULL, code->co_nlocalsplus); NULL, code->co_nlocalsplus);
STACK_SHRINK(2); STACK_SHRINK(2);
@ -4660,6 +4661,7 @@ handle_eval_breaker:
if (new_frame == NULL) { if (new_frame == NULL) {
goto error; goto error;
} }
CALL_STAT_INC(inlined_py_calls);
STACK_SHRINK(argcount); STACK_SHRINK(argcount);
for (int i = 0; i < argcount; i++) { for (int i = 0; i < argcount; i++) {
new_frame->localsplus[i] = stack_pointer[i]; new_frame->localsplus[i] = stack_pointer[i];
@ -4690,6 +4692,7 @@ handle_eval_breaker:
if (new_frame == NULL) { if (new_frame == NULL) {
goto error; goto error;
} }
CALL_STAT_INC(inlined_py_calls);
STACK_SHRINK(argcount); STACK_SHRINK(argcount);
for (int i = 0; i < argcount; i++) { for (int i = 0; i < argcount; i++) {
new_frame->localsplus[i] = stack_pointer[i]; new_frame->localsplus[i] = stack_pointer[i];
@ -4708,7 +4711,6 @@ handle_eval_breaker:
_PyFrame_SetStackPointer(frame, stack_pointer); _PyFrame_SetStackPointer(frame, stack_pointer);
new_frame->previous = frame; new_frame->previous = frame;
frame = cframe.current_frame = new_frame; frame = cframe.current_frame = new_frame;
CALL_STAT_INC(inlined_py_calls);
goto start_frame; goto start_frame;
} }
@ -6078,6 +6080,7 @@ _PyEvalFramePushAndInit(PyThreadState *tstate, PyFunctionObject *func,
{ {
PyCodeObject * code = (PyCodeObject *)func->func_code; PyCodeObject * code = (PyCodeObject *)func->func_code;
size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE; size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE;
CALL_STAT_INC(frames_pushed);
InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size); InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size);
if (frame == NULL) { if (frame == NULL) {
goto fail; goto fail;

2
Python/frame.c
View file

@ -1,6 +1,7 @@
#include "Python.h" #include "Python.h"
#include "frameobject.h" #include "frameobject.h"
#include "pycore_code.h" // stats
#include "pycore_frame.h" #include "pycore_frame.h"
#include "pycore_object.h" // _PyObject_GC_UNTRACK() #include "pycore_object.h" // _PyObject_GC_UNTRACK()
#include "opcode.h" #include "opcode.h"
@ -113,6 +114,7 @@ _PyFrame_Push(PyThreadState *tstate, PyFunctionObject *func)
{ {
PyCodeObject *code = (PyCodeObject *)func->func_code; PyCodeObject *code = (PyCodeObject *)func->func_code;
size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE; size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE;
CALL_STAT_INC(frames_pushed);
InterpreterFrame *new_frame = _PyThreadState_BumpFramePointer(tstate, size); InterpreterFrame *new_frame = _PyThreadState_BumpFramePointer(tstate, size);
if (new_frame == NULL) { if (new_frame == NULL) {
return NULL; return NULL;

2
Python/pystate.c
View file

@ -3,6 +3,7 @@
#include "Python.h" #include "Python.h"
#include "pycore_ceval.h" #include "pycore_ceval.h"
#include "pycore_code.h" // stats
#include "pycore_frame.h" #include "pycore_frame.h"
#include "pycore_initconfig.h" #include "pycore_initconfig.h"
#include "pycore_object.h" // _PyType_InitCache() #include "pycore_object.h" // _PyType_InitCache()
@ -2219,6 +2220,7 @@ _PyThreadState_PushFrame(PyThreadState *tstate, PyFunctionObject *func, PyObject
int nlocalsplus = code->co_nlocalsplus; int nlocalsplus = code->co_nlocalsplus;
size_t size = nlocalsplus + code->co_stacksize + size_t size = nlocalsplus + code->co_stacksize +
FRAME_SPECIALS_SIZE; FRAME_SPECIALS_SIZE;
CALL_STAT_INC(frames_pushed);
InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size); InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size);
if (frame == NULL) { if (frame == NULL) {
return NULL; return NULL;

2
Python/specialize.c
View file

@ -169,6 +169,8 @@ print_call_stats(FILE *out, CallStats *stats)
{ {
fprintf(out, "Calls to PyEval_EvalDefault: %" PRIu64 "\n", stats->pyeval_calls); fprintf(out, "Calls to PyEval_EvalDefault: %" PRIu64 "\n", stats->pyeval_calls);
fprintf(out, "Calls to Python functions inlined: %" PRIu64 "\n", stats->inlined_py_calls); fprintf(out, "Calls to Python functions inlined: %" PRIu64 "\n", stats->inlined_py_calls);
fprintf(out, "Frames pushed: %" PRIu64 "\n", stats->frames_pushed);
fprintf(out, "Frame objects created: %" PRIu64 "\n", stats->frame_objects_created);
} }
static void static void

3
Tools/scripts/summarize_stats.py
View file

@ -106,6 +106,9 @@ def main():
for key, value in stats.items(): for key, value in stats.items():
if "Calls to" in key: if "Calls to" in key:
print(f" {key}: {value} {100*value/total:0.1f}%") print(f" {key}: {value} {100*value/total:0.1f}%")
for key, value in stats.items():
if key.startswith("Frame"):
print(f" {key}: {value} {100*value/total:0.1f}%")
print("Object stats:") print("Object stats:")
total = stats.get("Object new values") total = stats.get("Object new values")
for key, value in stats.items(): for key, value in stats.items():