bm-20240430-azure-x86_64-faster%2dcpython-unify_tier_2_for_ite-3.13.0a6+-04feb78-pystats-vs-base.md

Execution counts

Execution counts for Tier 1 instructions.

The "miss ratio" column shows the percentage of times the instruction executed that it deoptimized. When this happens, the base unspecialized instruction is not counted.

Name	Base Count	Head Count	Change
FOR_ITER_TUPLE	9,322,669	127,573,632	1,268.4%
FOR_ITER_LIST	25,033,007	261,247,125	943.6%
SET_ADD	240,278	965,777	301.9%
STORE_FAST_LOAD_FAST	15,894,646	37,144,433	133.7%
FOR_ITER_RANGE	30,114,263	52,714,319	75.0%
DELETE_SUBSCR	176,287,946	79,744,868	-54.8%
CONVERT_VALUE	87,548,384	135,326,028	54.6%
FORMAT_SIMPLE	97,516,060	145,188,189	48.9%
BUILD_STRING	50,582,232	74,244,010	46.8%
STORE_SLICE	12,601,781	7,504,627	-40.4%
CALL_TYPE_1	147,540,690	198,129,132	34.3%
CONTAINS_OP_DICT	104,180,045	138,841,860	33.3%
CALL_BUILTIN_FAST	305,269,263	403,755,829	32.3%
MAP_ADD	39,181,116	27,340,378	-30.2%
DELETE_ATTR	6,693,199	4,683,148	-30.0%
BINARY_OP_MULTIPLY_FLOAT	146,529,174	190,322,142	29.9%
UNPACK_SEQUENCE_TWO_TUPLE	254,275,371	328,075,619	29.0%
BUILD_CONST_KEY_MAP	7,422,984	5,316,442	-28.4%
CALL_METHOD_DESCRIPTOR_O	391,910,533	289,288,945	-26.2%
UNPACK_SEQUENCE_TUPLE	198,213,376	246,274,994	24.2%
BINARY_SUBSCR	263,984,989	324,754,187	23.0%
TO_BOOL_STR	76,383,941	60,750,409	-20.5%
BUILD_TUPLE	539,405,584	436,473,441	-19.1%
CONTAINS_OP	101,980,758	83,678,292	-17.9%
BINARY_OP	569,933,157	472,289,955	-17.1%
LOAD_DEREF	529,282,057	603,648,531	14.1%
FOR_ITER	118,806,903	102,253,118	-13.9%
SWAP	489,873,072	425,022,432	-13.2%
LOAD_GLOBAL_BUILTIN	2,342,080,774	2,595,321,066	10.8%
UNARY_NOT	28,362,762	25,382,935	-10.5%
STORE_FAST	5,404,229,577	5,948,241,263	10.1%
LOAD_FAST_AND_CLEAR	85,733,933	77,900,752	-9.1%
POP_TOP	3,374,250,446	3,678,351,487	9.0%
LOAD_ATTR_METHOD_NO_DICT	1,282,500,727	1,174,183,482	-8.4%
BINARY_SUBSCR_DICT	400,497,462	433,814,773	8.3%
STORE_FAST_STORE_FAST	382,367,297	413,926,093	8.3%
TO_BOOL_BOOL	2,619,357,899	2,817,033,905	7.5%
CONTAINS_OP_SET	340,817,414	366,260,529	7.5%
BINARY_OP_INPLACE_ADD_UNICODE	4,824,622	5,184,215	7.5%
EXTENDED_ARG	58,000,711	62,107,085	7.1%
LIST_APPEND	94,641,211	101,208,725	6.9%
GET_ITER	559,498,490	524,892,076	-6.2%
DICT_MERGE	42,881,386	45,415,762	5.9%
CALL_BUILTIN_CLASS	158,275,650	149,087,423	-5.8%
LOAD_ATTR_METHOD_WITH_VALUES	1,433,195,592	1,513,936,004	5.6%
POP_JUMP_IF_TRUE	1,174,337,703	1,240,377,925	5.6%
STORE_ATTR_INSTANCE_VALUE	1,129,197,042	1,065,717,649	-5.6%
TO_BOOL_INT	127,908,705	120,757,852	-5.6%
CALL_ISINSTANCE	760,301,679	800,277,378	5.3%
TO_BOOL_LIST	113,081,354	107,485,193	-4.9%
ENTER_EXECUTOR	2,987,110,252	2,839,356,248	-4.9%
LIST_EXTEND	27,961,573	29,277,767	4.7%
BINARY_OP_ADD_FLOAT	72,562,392	69,196,914	-4.6%
BINARY_SUBSCR_GETITEM	62,131,885	64,907,632	4.5%
BINARY_SUBSCR_TUPLE_INT	178,749,971	186,029,027	4.1%
COMPARE_OP	131,239,575	136,558,613	4.1%
POP_JUMP_IF_FALSE	5,001,385,717	5,197,685,900	3.9%
POP_JUMP_IF_NOT_NONE	658,766,873	633,428,678	-3.8%
CALL_LEN	286,030,880	275,819,486	-3.6%
POP_JUMP_IF_NONE	383,241,080	370,275,289	-3.4%
STORE_SUBSCR_DICT	146,455,247	142,315,983	-2.8%
CALL_PY_EXACT_ARGS	2,537,825,959	2,607,522,234	2.7%
CALL_TUPLE_1	21,331,969	20,747,115	-2.7%
LOAD_ATTR_METHOD_LAZY_DICT	246,013,453	252,038,089	2.4%
CALL_METHOD_DESCRIPTOR_FAST	364,381,894	355,947,265	-2.3%
CALL_METHOD_DESCRIPTOR_NOARGS	247,647,861	241,919,079	-2.3%
LOAD_ATTR_INSTANCE_VALUE	3,966,061,266	3,877,917,539	-2.2%
BUILD_MAP	122,818,875	120,193,253	-2.1%
LOAD_ATTR_WITH_HINT	233,243,353	238,206,691	2.1%
UNPACK_SEQUENCE	529,624	540,674	2.1%
CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS	40,662,728	41,407,081	1.8%
LOAD_FAST_CHECK	11,090,503	10,887,552	-1.8%
BINARY_OP_ADD_UNICODE	72,104,727	70,801,336	-1.8%
TO_BOOL	232,286,164	228,261,407	-1.7%
RETURN_VALUE	4,013,229,156	4,082,638,860	1.7%
COMPARE_OP_STR	310,740,134	316,064,943	1.7%
LOAD_GLOBAL_MODULE	3,243,389,913	3,298,068,800	1.7%
PUSH_NULL	1,077,004,968	1,094,820,431	1.7%
LOAD_CONST	5,654,125,516	5,566,987,205	-1.5%
LOAD_FAST	21,804,805,898	22,102,977,235	1.4%
CALL_BUILTIN_O	520,162,823	526,947,516	1.3%
JUMP_FORWARD	427,161,884	422,047,167	-1.2%
MAKE_CELL	103,581,938	104,775,023	1.2%
COMPARE_OP_INT	1,150,572,046	1,137,899,481	-1.1%
STORE_SUBSCR_LIST_INT	98,669,698	99,720,415	1.1%
BINARY_SUBSCR_LIST_INT	412,574,212	408,466,445	-1.0%
IS_OP	410,824,399	414,907,435	1.0%
LOAD_ATTR_SLOT	1,657,367,839	1,641,274,888	-1.0%
RESUME_CHECK	6,333,687,206	6,394,671,415	1.0%
CALL_INTRINSIC_1	153,640,215	154,993,917	0.9%
COPY	484,366,323	488,620,388	0.9%
BUILD_LIST	225,463,095	223,661,783	-0.8%
LOAD_ATTR	782,190,528	776,098,574	-0.8%
INSTRUMENTED_JUMP_BACKWARD	6,212	6,260	0.8%
LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES	118,810,744	117,983,367	-0.7%
BINARY_OP_SUBTRACT_INT	383,212,750	385,853,724	0.7%
STORE_DEREF	94,323,245	94,908,122	0.6%
STORE_SUBSCR	69,679,233	70,042,475	0.5%
TO_BOOL_NONE	500,872,015	498,364,077	-0.5%
STORE_ATTR_SLOT	1,497,125,190	1,490,726,859	-0.4%
UNPACK_SEQUENCE_LIST	8,183,835	8,217,328	0.4%
LOAD_ATTR_PROPERTY	61,394,355	61,148,893	-0.4%
LOAD_FAST_LOAD_FAST	4,749,113,161	4,767,367,316	0.4%
BINARY_SLICE	223,892,264	224,664,021	0.3%
TO_BOOL_ALWAYS_TRUE	180,195,901	179,624,245	-0.3%
BINARY_OP_ADD_INT	642,690,608	644,697,470	0.3%
UNARY_INVERT	2,034,889	2,040,849	0.3%
SET_FUNCTION_ATTRIBUTE	53,514,040	53,357,309	-0.3%
CALL_STR_1	38,332,258	38,441,407	0.3%
LOAD_ATTR_NONDESCRIPTOR_NO_DICT	62,356,049	62,525,004	0.3%
LOAD_ATTR_CLASS	139,134,463	138,776,595	-0.3%
MAKE_FUNCTION	65,589,446	65,445,871	-0.2%
BINARY_OP_MULTIPLY_INT	164,098,748	163,744,691	-0.2%
STORE_GLOBAL	6,929,920	6,944,700	0.2%
CALL_BOUND_METHOD_EXACT_ARGS	184,561,516	184,297,981	-0.1%
RETURN_CONST	2,050,103,455	2,047,291,175	-0.1%
INTERPRETER_EXIT	2,311,755,604	2,308,964,439	-0.1%
STORE_ATTR	71,038,424	70,956,717	-0.1%
LOAD_ATTR_MODULE	519,606,644	519,027,833	-0.1%
BINARY_SUBSCR_STR_INT	455,276,518	455,665,370	0.1%
RETURN_GENERATOR	414,263,913	413,941,955	-0.1%
UNARY_NEGATIVE	145,893,407	145,995,166	0.1%
CALL_BUILTIN_FAST_WITH_KEYWORDS	40,853,627	40,828,851	-0.1%
DICT_UPDATE	73,490	73,452	-0.1%
COPY_FREE_VARS	287,013,235	287,157,800	0.1%
BEFORE_WITH	10,084,662	10,080,720	-0.0%
LOAD_SUPER_ATTR	23,573	23,565	-0.0%
BUILD_SLICE	71,719,213	71,695,340	-0.0%
JUMP_BACKWARD	1,676,306	1,676,799	0.0%
DELETE_FAST	2,232,572	2,231,927	-0.0%
RERAISE	4,244,585	4,243,429	-0.0%
FOR_ITER_GEN	83,330,318	83,352,812	0.0%
LOAD_SUPER_ATTR_METHOD	126,670,852	126,638,040	-0.0%
CHECK_EXC_MATCH	24,470,055	24,465,047	-0.0%
POP_EXCEPT	24,973,885	24,968,907	-0.0%
PUSH_EXC_INFO	24,981,655	24,976,679	-0.0%
YIELD_VALUE	1,355,126,404	1,354,906,614	-0.0%
RESUME	345,460	345,413	-0.0%
BINARY_OP_SUBTRACT_FLOAT	75,390,063	75,400,144	0.0%
RAISE_VARARGS	6,185,474	6,185,044	-0.0%
IMPORT_FROM	13,105,204	13,104,308	-0.0%
CALL_PY_WITH_DEFAULTS	216,506,294	216,492,423	-0.0%
IMPORT_NAME	12,437,044	12,436,278	-0.0%
STORE_ATTR_WITH_HINT	62,856,298	62,852,453	-0.0%
COMPARE_OP_FLOAT	149,894,275	149,885,850	-0.0%
CALL	1,208,358,635	1,208,305,125	-0.0%
NOP	919,050,508	919,010,219	-0.0%
BUILD_SET	2,329,834	2,329,757	-0.0%
WITH_EXCEPT_START	233,490	233,483	-0.0%
LOAD_GLOBAL	20,773,312	20,772,741	-0.0%
CLEANUP_THROW	152,063	152,060	-0.0%
END_FOR	82,357,285	82,358,881	0.0%
JUMP_BACKWARD_NO_INTERRUPT	556,686,303	556,680,360	-0.0%
CALL_LIST_APPEND	348,145,792	348,142,568	-0.0%
LOAD_SUPER_ATTR_ATTR	7,751,831	7,751,767	-0.0%
SEND_GEN	787,117,718	787,115,718	-0.0%
BEFORE_ASYNC_WITH	3,005,926	3,005,920	-0.0%
GET_YIELD_FROM_ITER	46,592,624	46,592,542	-0.0%
GET_AWAITABLE	229,143,065	229,142,706	-0.0%
CALL_KW	273,955,050	273,954,712	-0.0%
END_SEND	402,624,934	402,624,579	-0.0%
SEND	173,840,668	173,840,612	-0.0%
CALL_FUNCTION_EX	218,826,223	218,826,202	-0.0%
EXIT_INIT_CHECK	94,703,946	94,703,938	-0.0%
CALL_ALLOC_AND_ENTER_INIT	96,992,008	96,992,000	-0.0%
INSTRUMENTED_RESUME	38,855,260	38,855,260	0.0%
INSTRUMENTED_RETURN_VALUE	38,851,520	38,851,520	0.0%
LOAD_NAME	8,145,287	8,145,287	0.0%
GET_ANEXT	8,000,960	8,000,960	0.0%
END_ASYNC_FOR	8,000,000	8,000,000	0.0%
GET_AITER	8,000,000	8,000,000	0.0%
UNPACK_EX	1,129,822	1,129,822	0.0%
STORE_NAME	641,202	641,202	0.0%
SET_UPDATE	200,488	200,488	0.0%
LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN	89,680	89,680	0.0%
LOAD_BUILD_CLASS	30,746	30,746	0.0%
LOAD_LOCALS	2,260	2,260	0.0%
LOAD_FROM_DICT_OR_DEREF	2,240	2,240	0.0%
INSTRUMENTED_RETURN_CONST	2,160	2,160	0.0%
FORMAT_WITH_SPEC	1,760	1,760	0.0%
SETUP_ANNOTATIONS	1,524	1,524	0.0%
DELETE_NAME	1,100	1,100	0.0%
INSTRUMENTED_JUMP_FORWARD	1,040	1,040	0.0%
CALL_INTRINSIC_2	80	80	0.0%

Pair counts

Pair counts for top 100 opcode pairs

Pairs of specialized operations that deoptimize and are then followed by the corresponding unspecialized instruction are not counted as pairs.

Not included in comparative output.

Predecessor/Successor Pairs

Top 5 predecessors and successors of each Tier 1 opcode.

This does not include the unspecialized instructions that occur after a specialized instruction deoptimizes.

Not included in comparative output.

Specialization stats

Specialization stats by family

BINARY_OP

specialization stats for BINARY_OP family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	598,961,048	28.1%	500,018,158	24.1%	-16.5%
miss ⓘ Specialized instructions that deopt.	30,888,228	1.4%	29,508,393	1.4%	-4.5%
hit ⓘ Specialized instructions that complete.	1,530,524,856	71.8%	1,575,692,243	75.8%	3.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	1,224,146	65.8%	1,170,229	65.7%	-4.4%
Success	636,191	34.2%	609,961	34.3%	-4.1%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
remainder	50,416	4.1%	26,614	2.3%	-47.2%
add different types	78,526	6.4%	51,069	4.4%	-35.0%
and different types	619	0.1%	580	0.0%	-6.3%
multiply different types	92,002	7.5%	88,216	7.5%	-4.1%
and int	36,727	3.0%	37,745	3.2%	2.8%
lshift	5,720	0.5%	5,828	0.5%	1.9%
subtract other	11,334	0.9%	11,534	1.0%	1.8%
true divide float	5,668	0.5%	5,764	0.5%	1.7%
xor	8,128	0.7%	8,264	0.7%	1.7%
rshift	8,863	0.7%	8,997	0.8%	1.5%
true divide other	3,441	0.3%	3,400	0.3%	-1.2%
add other	64,269	5.3%	63,871	5.5%	-0.6%
power	5,776	0.5%	5,748	0.5%	-0.5%
true divide different types	12,523	1.0%	12,508	1.1%	-0.1%
or	17,151	1.4%	17,170	1.5%	0.1%
and other	2,016	0.2%	2,014	0.2%	-0.1%
floor divide	33,252	2.7%	33,236	2.8%	-0.0%
subtract different types	782,495	63.9%	782,451	66.9%	-0.0%
multiply other	5,220	0.4%	5,220	0.4%	0.0%

BINARY_SLICE

specialization stats for BINARY_SLICE family

BINARY_SUBSCR

specialization stats for BINARY_SUBSCR family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	268,540,656	15.1%	329,294,716	17.6%	22.6%
hit ⓘ Specialized instructions that complete.	1,504,328,633	84.8%	1,543,980,739	82.4%	2.6%
miss ⓘ Specialized instructions that deopt.	4,901,415	0.3%	4,902,508	0.3%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	143,901	41.6%	160,136	44.2%	11.3%
Success	201,847	58.4%	201,843	55.8%	-0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
other	25,085	17.4%	40,645	25.4%	62.0%
buffer slice	900	0.6%	880	0.5%	-2.2%
tuple slice	188	0.1%	184	0.1%	-2.1%
array int	15,880	11.0%	16,200	10.1%	2.0%
buffer int	22,243	15.5%	22,642	14.1%	1.8%
code complex parameters	4,998	3.5%	4,935	3.1%	-1.3%
out of range	68,847	47.8%	68,890	43.0%	0.1%
sequence int	4,300	3.0%	4,300	2.7%	0.0%
list slice	1,360	0.9%	1,360	0.8%	0.0%
string slice	100	0.1%	100	0.1%	0.0%

CALL

specialization stats for CALL family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deopt ⓘ Specialized instructions that deopt.	33,100	0.0%	28,860	0.0%	-12.8%
hit ⓘ Specialized instructions that complete.	6,639,625,657	82.0%	6,768,992,197	82.3%	1.9%
miss ⓘ Specialized instructions that deopt.	245,109,647	3.0%	244,617,738	3.0%	-0.2%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	1,447,251,749	17.9%	1,446,715,956	17.6%	-0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	5,254,767	84.5%	5,245,282	84.5%	-0.2%
Failure	961,766	15.5%	961,625	15.5%	-0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
metaclass	43,300	4.5%	43,182	4.5%	-0.3%
bound method	12,030	1.3%	12,014	1.2%	-0.1%
out of versions	981	0.1%	980	0.1%	-0.1%
meth descr varargs keywords	20,889	2.2%	20,904	2.2%	0.1%
cfunc noargs	69,472	7.2%	69,511	7.2%	0.1%
cfunc varargs	14,255	1.5%	14,249	1.5%	-0.0%
cfunc varargs keywords	32,260	3.4%	32,250	3.4%	-0.0%
class no vectorcall	89,332	9.3%	89,311	9.3%	-0.0%
other	65,816	6.8%	65,802	6.8%	-0.0%
class mutable	24,739	2.6%	24,734	2.6%	-0.0%
code complex parameters	185,195	19.3%	185,179	19.3%	-0.0%
meth descr varargs	16,518	1.7%	16,517	1.7%	-0.0%
meth descr method fastcall keywords	207,186	21.5%	207,198	21.5%	0.0%
init not inline values	105,557	11.0%	105,557	11.0%	0.0%
init not python	16,386	1.7%	16,386	1.7%	0.0%
wrong number arguments	13,753	1.4%	13,753	1.4%	0.0%
cmethod	13,620	1.4%	13,620	1.4%	0.0%
init not simple	12,278	1.3%	12,278	1.3%	0.0%
operator wrapper	10,136	1.1%	10,136	1.1%	0.0%
method wrapper	8,224	0.9%	8,224	0.9%	0.0%

COMPARE_OP

specialization stats for COMPARE_OP family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	132,656,051	7.6%	138,038,672	7.9%	4.1%
miss ⓘ Specialized instructions that deopt.	1,750,295	0.1%	1,819,394	0.1%	3.9%
hit ⓘ Specialized instructions that complete.	1,609,456,160	92.4%	1,602,030,880	92.0%	-0.5%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	222,832	66.8%	227,086	66.9%	1.9%
Success	110,987	33.2%	112,249	33.1%	1.1%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
set	1,663	0.7%	2,343	1.0%	40.9%
bytes	3,680	1.7%	3,880	1.7%	5.4%
big int	58,961	26.5%	61,460	27.1%	4.2%
baseobject	31,179	14.0%	32,360	14.3%	3.8%
float long	16,209	7.3%	15,943	7.0%	-1.6%
string	11,080	5.0%	10,920	4.8%	-1.4%
tuple	14,550	6.5%	14,406	6.3%	-1.0%
bool	3,788	1.7%	3,823	1.7%	0.9%
different types	54,033	24.2%	54,205	23.9%	0.3%
other	21,941	9.8%	21,999	9.7%	0.3%
long float	1,534	0.7%	1,536	0.7%	0.1%
list	4,214	1.9%	4,211	1.9%	-0.1%

CONTAINS_OP

specialization stats for CONTAINS_OP family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	104,334,443	19.1%	86,033,546	14.6%	-17.5%
hit ⓘ Specialized instructions that complete.	442,451,219	80.9%	502,556,149	85.4%	13.6%
miss ⓘ Specialized instructions that deopt.	2,546,240	0.5%	2,546,240	0.4%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	125,043	64.9%	123,474	64.7%	-1.3%
Success	67,512	35.1%	67,512	35.3%	0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
str	33,285	26.6%	29,944	24.3%	-10.0%
list	18,064	14.4%	19,199	15.5%	6.3%
other	27,363	21.9%	27,835	22.5%	1.7%
tuple	46,331	37.1%	46,496	37.7%	0.4%

FOR_ITER

specialization stats for FOR_ITER family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
miss ⓘ Specialized instructions that deopt.	330,613	0.1%	2,929,312	0.5%	786.0%
hit ⓘ Specialized instructions that complete.	147,469,644	55.3%	521,958,576	83.2%	253.9%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	118,900,180	44.6%	104,901,985	16.7%	-11.8%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	72,427	30.5%	121,389	43.3%	67.6%
Failure	164,909	69.5%	159,056	56.7%	-3.5%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
seq iter	6,060	3.7%	3,780	2.4%	-37.6%
dict items	50,177	30.4%	47,485	29.9%	-5.4%
enumerate	19,752	12.0%	19,145	12.0%	-3.1%
set	22,774	13.8%	22,429	14.1%	-1.5%
dict values	6,790	4.1%	6,706	4.2%	-1.2%
dict keys	14,549	8.8%	14,675	9.2%	0.9%
ascii string	2,640	1.6%	2,660	1.7%	0.8%
itertools	7,249	4.4%	7,258	4.6%	0.1%
zip	14,352	8.7%	14,352	9.0%	0.0%
other	10,999	6.7%	10,999	6.9%	0.0%
reversed list	7,865	4.8%	7,865	4.9%	0.0%
map	740	0.4%	740	0.5%	0.0%
bytes	660	0.4%	660	0.4%	0.0%
callable	282	0.2%	282	0.2%	0.0%
string	20	0.0%	20	0.0%	0.0%

LOAD_ATTR

specialization stats for LOAD_ATTR family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
miss ⓘ Specialized instructions that deopt.	479,942,573	4.6%	429,534,631	4.1%	-10.5%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	1,251,113,517	11.9%	1,195,563,300	11.5%	-4.4%
hit ⓘ Specialized instructions that complete.	9,239,831,592	88.0%	9,167,573,434	88.4%	-0.8%
deopt ⓘ Specialized instructions that deopt.	680,343	0.0%	680,516	0.0%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	9,942,682	90.2%	8,991,663	89.3%	-9.6%
Failure	1,076,902	9.8%	1,078,242	10.7%	0.1%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
non string or split	21,933	2.0%	20,636	1.9%	-5.9%
non object slot	3,540	0.3%	3,382	0.3%	-4.5%
builtin class method	3,797	0.4%	3,681	0.3%	-3.1%
metaclass attribute	187,958	17.5%	191,420	17.8%	1.8%
class method obj	20,915	1.9%	20,538	1.9%	-1.8%
not in keys	15,620	1.5%	15,840	1.5%	1.4%
out of versions	2,281	0.2%	2,310	0.2%	1.3%
non overriding descriptor	13,434	1.2%	13,314	1.2%	-0.9%
mutable class	77,135	7.2%	77,683	7.2%	0.7%
method	114,182	10.6%	114,969	10.7%	0.7%
overridden	19,279	1.8%	19,150	1.8%	-0.7%
class attr descriptor	29,980	2.8%	29,840	2.8%	-0.5%
shadowed	138,232	12.8%	137,644	12.8%	-0.4%
not managed dict	246,798	22.9%	246,102	22.8%	-0.3%
module attr not found	17,662	1.6%	17,682	1.6%	0.1%
class attr simple	162,376	15.1%	162,271	15.0%	-0.1%
wrong number arguments	1,100	0.1%	1,100	0.1%	0.0%
not in dict	320	0.0%	320	0.0%	0.0%
no dict	300	0.0%	300	0.0%	0.0%
property	60	0.0%	60	0.0%	0.0%

LOAD_GLOBAL

specialization stats for LOAD_GLOBAL family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
hit ⓘ Specialized instructions that complete.	5,585,012,106	99.6%	5,892,932,179	99.6%	5.5%
miss ⓘ Specialized instructions that deopt.	458,581	0.0%	457,687	0.0%	-0.2%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	20,563,462	0.4%	20,562,305	0.3%	-0.0%
deopt ⓘ Specialized instructions that deopt.	13,123	0.0%	13,123	0.0%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	668,431	100.0%	668,123	100.0%	-0.0%
Failure	0	0.0%	0	0.0%

LOAD_SUPER_ATTR

specialization stats for LOAD_SUPER_ATTR family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	11,855	0.0%	11,848	0.0%	-0.1%
hit ⓘ Specialized instructions that complete.	134,422,683	100.0%	134,389,807	100.0%	-0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	11,718	100.0%	11,717	100.0%	-0.0%
Failure	0	0.0%	0	0.0%

POP_JUMP_IF_FALSE

specialization stats for POP_JUMP_IF_FALSE family

POP_JUMP_IF_NONE

specialization stats for POP_JUMP_IF_NONE family

POP_JUMP_IF_NOT_NONE

specialization stats for POP_JUMP_IF_NOT_NONE family

POP_JUMP_IF_TRUE

specialization stats for POP_JUMP_IF_TRUE family

SEND

specialization stats for SEND family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
hit ⓘ Specialized instructions that complete.	787,086,818	81.9%	787,084,818	81.9%	-0.0%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	173,802,667	18.1%	173,802,608	18.1%	-0.0%
miss ⓘ Specialized instructions that deopt.	30,900	0.0%	30,900	0.0%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	61,749	89.6%	61,752	89.6%	0.0%
Success	7,152	10.4%	7,152	10.4%	0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
other	16,129	26.1%	16,132	26.1%	0.0%
async generator send	33,180	53.7%	33,180	53.7%	0.0%
list	9,980	16.2%	9,980	16.2%	0.0%
tuple	2,220	3.6%	2,220	3.6%	0.0%
dict keys	240	0.4%	240	0.4%	0.0%

STORE_ATTR

specialization stats for STORE_ATTR family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
miss ⓘ Specialized instructions that deopt.	165,625,661	6.0%	160,646,573	6.0%	-3.0%
hit ⓘ Specialized instructions that complete.	2,523,552,869	91.4%	2,458,650,388	91.4%	-2.6%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	233,244,086	8.5%	228,277,247	8.5%	-2.1%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	3,274,011	95.7%	3,180,122	95.6%	-2.9%
Failure	145,988	4.3%	145,921	4.4%	-0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
out of versions	573	0.4%	594	0.4%	3.7%
not in keys	7,781	5.3%	7,761	5.3%	-0.3%
class attr simple	48,279	33.1%	48,219	33.0%	-0.1%
not managed dict	28,518	19.5%	28,510	19.5%	-0.0%
not in dict	15,645	10.7%	15,645	10.7%	0.0%
non string or split	15,440	10.6%	15,440	10.6%	0.0%
overriding descriptor	10,660	7.3%	10,660	7.3%	0.0%
overridden	6,932	4.7%	6,932	4.8%	0.0%
property	5,440	3.7%	5,440	3.7%	0.0%
no dict	5,180	3.5%	5,180	3.5%	0.0%
method	1,500	1.0%	1,500	1.0%	0.0%
mutable class	40	0.0%	40	0.0%	0.0%

STORE_SLICE

specialization stats for STORE_SLICE family

STORE_SUBSCR

specialization stats for STORE_SUBSCR family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
hit ⓘ Specialized instructions that complete.	245,122,045	77.9%	242,033,498	77.6%	-1.3%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	69,597,071	22.1%	69,959,658	22.4%	0.5%
miss ⓘ Specialized instructions that deopt.	2,900	0.0%	2,900	0.0%	0.0%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	66,345	78.0%	67,008	78.2%	1.0%
Success	18,717	22.0%	18,709	21.8%	-0.0%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
dict subclass no override	11,838	17.8%	12,528	18.7%	5.8%
bytearray int	1,340	2.0%	1,400	2.1%	4.5%
array int	6,560	9.9%	6,480	9.7%	-1.2%
out of range	2,028	3.1%	2,006	3.0%	-1.1%
py simple	42,499	64.1%	42,514	63.4%	0.0%
other	2,080	3.1%	2,080	3.1%	0.0%

TO_BOOL

specialization stats for TO_BOOL family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
hit ⓘ Specialized instructions that complete.	3,381,823,980	91.0%	3,549,031,429	91.5%	4.9%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	331,544,475	8.9%	326,891,261	8.4%	-1.4%
miss ⓘ Specialized instructions that deopt.	102,057,886	2.7%	101,415,739	2.6%	-0.6%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Success	2,210,153	78.9%	2,197,847	78.9%	-0.6%
Failure	589,422	21.1%	588,038	21.1%	-0.2%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
other	173,065	29.4%	171,191	29.1%	-1.1%
dict	30,974	5.3%	30,651	5.2%	-1.0%
set	40,256	6.8%	40,469	6.9%	0.5%
mapping	57,846	9.8%	58,032	9.9%	0.3%
tuple	95,114	16.1%	95,418	16.2%	0.3%
sequence	17,242	2.9%	17,197	2.9%	-0.3%
number	152,245	25.8%	152,413	25.9%	0.1%
bytes	18,699	3.2%	18,687	3.2%	-0.1%
float	2,321	0.4%	2,320	0.4%	-0.0%
bytearray	1,240	0.2%	1,240	0.2%	0.0%
memory view	420	0.1%	420	0.1%	0.0%

UNPACK_SEQUENCE

specialization stats for UNPACK_SEQUENCE family

Kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
miss ⓘ Specialized instructions that deopt.	1,060	0.0%	3,160	0.0%	198.1%
hit ⓘ Specialized instructions that complete.	460,671,522	99.9%	582,564,781	99.9%	26.5%
deferred ⓘ Lists the number of "deferred" (i.e. not specialized) instructions executed.	487,240	0.1%	500,400	0.1%	2.7%

Success	Base Count	Base Ratio	Head Count	Head Ratio	Change
Failure	3,559	8.2%	3,577	8.2%	0.5%
Success	39,885	91.8%	39,857	91.8%	-0.1%

Failure kind	Base Count	Base Ratio	Head Count	Head Ratio	Change
sequence	2,498	70.2%	2,516	70.3%	0.7%
iterator	681	19.1%	681	19.0%	0.0%
other	380	10.7%	380	10.6%	0.0%

Specialization effectiveness

specialization effectiveness

All entries are execution counts. Should add up to the total number of Tier 1 instructions executed.

Instructions	Base Count	Base Ratio	Head Count	Head Ratio	Change
Specialized misses ⓘ Specialized instructions, e.g. LOAD_ATTR_MODULE that deopt.	1,033,830,254	0.9%	978,600,154	0.8%	-5.3%
Specialized hits ⓘ Specialized instructions, e.g. LOAD_ATTR_MODULE that complete.	40,520,798,804	34.6%	41,679,959,845	35.0%	2.9%
Basic ⓘ Instructions that are not and cannot be specialized, e.g. LOAD_FAST.	64,246,803,202	54.9%	65,194,961,846	54.7%	1.5%
Not specialized ⓘ Instructions that could be specialized but aren't, e.g. LOAD_ATTR, BINARY_SLICE.	11,198,890,961	9.6%	11,342,312,495	9.5%	1.3%

Deferred by instruction

Breakdown of deferred (not specialized) instruction counts by family

Name	Base Count	Base Ratio	Head Count	Head Ratio	Change
BINARY_SUBSCR	268,540,656	5.7%	329,294,716	7.1%	22.6%
CONTAINS_OP	104,334,443	2.2%	86,033,546	1.9%	-17.5%
BINARY_OP	598,961,048	12.6%	500,018,158	10.8%	-16.5%
FOR_ITER	118,900,180	2.5%	104,901,985	2.3%	-11.8%
LOAD_ATTR	1,251,113,517	26.3%	1,195,563,300	25.9%	-4.4%
COMPARE_OP	132,656,051	2.8%	138,038,672	3.0%	4.1%
STORE_ATTR	233,244,086	4.9%	228,277,247	4.9%	-2.1%
TO_BOOL	331,544,475	7.0%	326,891,261	7.1%	-1.4%
CALL	1,447,251,749	30.5%	1,446,715,956	31.3%	-0.0%
SEND	173,802,667	3.7%	173,802,608	3.8%	-0.0%

Misses by instruction

Breakdown of misses (specialized deopts) instruction counts by family

Name	Base Count	Base Ratio	Head Count	Head Ratio	Change
LOAD_ATTR_INSTANCE_VALUE	134,088,685	13.0%	102,113,076	10.4%	-23.8%
LOAD_ATTR_METHOD_WITH_VALUES	141,062,277	13.6%	125,541,985	12.8%	-11.0%
STORE_ATTR_INSTANCE_VALUE	70,593,778	6.8%	65,633,541	6.7%	-7.0%
LOAD_ATTR_SLOT	91,563,377	8.9%	89,027,071	9.1%	-2.8%
CALL_METHOD_DESCRIPTOR_FAST	42,377,083	4.1%	42,155,711	4.3%	-0.5%
TO_BOOL_ALWAYS_TRUE	46,277,952	4.5%	46,055,732	4.7%	-0.5%
TO_BOOL_NONE	47,895,264	4.6%	47,676,453	4.9%	-0.5%
CALL_PY_EXACT_ARGS	121,187,940	11.7%	121,070,405	12.4%	-0.1%
LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES	59,398,480	5.7%	59,350,778	6.1%	-0.1%
STORE_ATTR_SLOT	94,979,035	9.2%	94,960,180	9.7%	-0.0%

Call stats

Inlined calls and frame stats

This shows what fraction of calls to Python functions are inlined (i.e. not having a call at the C level) and for those that are not, where the call comes from. The various categories overlap.

Also includes the count of frame objects created.

	Base Count	Base Ratio	Head Count	Head Ratio	Change
Calls via PyEval_EvalFrame (slot)	479,367,831	5.5%	476,589,902	5.5%	-0.6%
Calls via PyEval_EvalFrame (function vectorcall)	1,450,623,703	16.7%	1,448,054,238	16.6%	-0.2%
Calls via PyEval_EvalFrame (vector)	1,453,312,773	16.7%	1,450,743,308	16.7%	-0.2%
Calls to PyEval_EvalDefault	2,315,819,709	26.6%	2,313,027,745	26.6%	-0.1%
Calls via PyEval_EvalFrame (total)	2,315,819,709	26.6%	2,313,027,745	26.6%	-0.1%
Calls via PyEval_EvalFrame (api)	260,349,622	3.0%	260,583,960	3.0%	0.1%
Calls to Python functions inlined	6,383,054,501	73.4%	6,385,321,489	73.4%	0.0%
Calls via PyEval_EvalFrame (generator)	862,506,936	9.9%	862,284,437	9.9%	-0.0%
Frame objects created	89,136,144	1.0%	89,129,530	1.0%	-0.0%
Frames pushed	6,953,899,388	79.9%	6,953,595,581	79.9%	-0.0%
Calls via PyEval_EvalFrame (function ex)	38,363,942	0.4%	38,365,534	0.4%	0.0%
Calls via PyEval_EvalFrame (method)	213,147,689	2.5%	213,146,646	2.5%	-0.0%
Calls via PyEval_EvalFrame (legacy)	2,658,324	0.0%	2,658,324	0.0%	0.0%
Calls via PyEval_EvalFrame (build class)	30,746	0.0%	30,746	0.0%	0.0%

Object stats

Allocations, frees and dict materializatons

Below, "allocations" means "allocations that are not from a freelist". Total allocations = "Allocations from freelist" + "Allocations".

"Inline values" is the number of values arrays inlined into objects.

The cache hit/miss numbers are for the MRO cache, split into dunder and other names.

	Base Count	Base Ratio	Head Count	Head Ratio	Change
Method cache dunder misses	11,379,543		10,427,242		-8.4%
Method cache collisions	82,020,930		76,950,714		-6.2%
Method cache misses	78,422,401		74,307,084		-5.2%
Increfs	27,330,270,170	22.6%	26,958,241,399	22.4%	-1.4%
Interpreter decrefs	108,049,204,455	78.1%	107,775,489,290	78.1%	-0.3%
Method cache hits	3,117,173,549		3,124,716,376		0.2%
Interpreter increfs	93,499,253,840	77.4%	93,585,718,597	77.6%	0.1%
Method cache dunder hits	3,564,283,563		3,562,262,775		-0.1%
Decrefs	30,220,971,580	21.9%	30,209,082,350	21.9%	-0.0%
Allocations to 4 kbytes	104,922,463	0.6%	104,903,887	0.6%	-0.0%
Inline values	182,584,015		182,576,430		-0.0%
Allocations	11,705,152,217	63.2%	11,704,809,855	63.2%	-0.0%
Allocations to 512 bytes	11,579,061,580	62.6%	11,578,738,037	62.6%	-0.0%
Frees	12,050,037,883		12,049,702,708		-0.0%
Frees to freelist	6,803,915,075		6,804,070,098		0.0%
Allocations from freelist	6,801,941,198	36.8%	6,802,077,167	36.8%	0.0%
Allocations over 4 kbytes	21,168,174	0.1%	21,167,931	0.1%	-0.0%
Materialize dict (on request)	6,618,866	3.6%	6,618,866	3.6%	0.0%
Materialize dict (new key)	116,335	0.1%	116,335	0.1%	0.0%
Materialize dict (too big)	0	0.0%	0	0.0%
Materialize dict (str subclass)	0	0.0%	0	0.0%

GC stats

GC collections and effectiveness

Collected/visits gives some measure of efficiency.

Generation	Base Collections	Base Objects collected	Base Object visits	Head Collections	Head Objects collected	Head Object visits
0	0	0	0	0	0	0
1	0	115,716,237	17,100,240,259	0	115,761,631	17,050,539,955
2	0	10,755,840	6,969,903,930	0	10,755,840	6,971,425,880

Optimization (Tier 2) stats

statistics about the Tier 2 optimizer

	Base Count	Base Ratio	Head Count	Head Ratio	Change
Trace stack underflow ⓘ A potential trace is abandoned because it pops more frames than it pushes.	176,430	24.7%	322,321	38.4%	82.7%
Inner loop found ⓘ A trace is truncated because it has an inner loop	35,230	4.9%	53,091	6.3%	50.7%
Recursive call ⓘ A trace is truncated because it has a recursive call.	2,674	0.4%	1,951	0.2%	-27.0%
Trace too short ⓘ A potential trace is abandoced because it it too short.	560,865	78.6%	691,751	82.3%	23.3%
Optimization attempts ⓘ The number of times a potential trace is identified. Specifically, this occurs in the JUMP BACKWARD instruction when the counter reaches a threshold.	713,970		840,159		17.7%
Trace stack overflow ⓘ A trace is truncated because it would require more than 5 stack frames.	1,362	0.2%	1,165	0.1%	-14.5%
Low confidence ⓘ A trace is abandoned because the likelihood of the jump to top being taken is too low.	8,829	1.2%	8,210	1.0%	-7.0%
Traces created ⓘ The number of traces that were successfully created.	153,105	21.4%	148,408	17.7%	-3.1%
Executors invalidated ⓘ The number of executors that were invalidated due to watched dictionary changes.	5,660	3.7%	5,520	3.7%	-2.5%
Uops executed ⓘ The total number of uops (micro-operations) that were executed	196,164,310,397	2,618.8%	192,480,127,857	2,540.6%	-1.9%
Traces executed ⓘ The number of traces that were executed	7,490,619,043		7,576,076,858		1.1%
Trace too long ⓘ A trace is truncated because it is longer than the instruction buffer.	0	0.0%	0	0.0%

	Base Count	Base Ratio	Head Count	Head Ratio	Change
Optimizer successes ⓘ The number of traces that were successfully optimized.	150,925	98.6%	144,800	97.6%	-4.1%
Optimizer attempts ⓘ The number of times the trace optimizer (_Py_uop_analyze_and_optimize) was run.	153,105		148,408		-3.1%
Optimizer no memory ⓘ The number of optimizations that failed due to no memory.	0	0.0%	0	0.0%
Remove globals builtins changed ⓘ The builtins changed during optimization	0	0.0%	0	0.0%
Remove globals incorrect keys ⓘ The keys in the globals dictionary aren't what was expected	2,120	1.4%	2,120	1.4%	0.0%

Trace length histogram

trace length histogram

Range	Base Count	Base Ratio	Head Count	Head Ratio	Change
<= 1	0	0.0%	0	0.0%
<= 2	0	0.0%	0	0.0%
<= 4	0	0.0%	0	0.0%
<= 8	10,035	6.6%	12,311	8.3%	22.7%
<= 16	24,722	16.1%	24,282	16.4%	-1.8%
<= 32	57,193	37.4%	52,479	35.4%	-8.2%
<= 64	33,800	22.1%	33,167	22.3%	-1.9%
<= 128	19,398	12.7%	18,285	12.3%	-5.7%
<= 256	6,590	4.3%	6,774	4.6%	2.8%
<= 512	1,367	0.9%	1,110	0.7%	-18.8%

Optimized trace length histogram

optimized trace length histogram

Range	Base Count	Base Ratio	Head Count	Head Ratio	Change
<= 1	0	0.0%	0	0.0%
<= 2	0	0.0%	0	0.0%
<= 4	2,606	1.7%	5,105	3.4%	95.9%
<= 8	16,925	11.1%	19,699	13.3%	16.4%
<= 16	46,264	30.2%	41,017	27.6%	-11.3%
<= 32	48,610	31.7%	43,695	29.4%	-10.1%
<= 64	23,789	15.5%	23,142	15.6%	-2.7%
<= 128	9,961	6.5%	9,568	6.4%	-3.9%
<= 256	2,630	1.7%	2,434	1.6%	-7.5%
<= 512	140	0.1%	140	0.1%	0.0%

Trace run length histogram

trace run length histogram

Range	Base Count	Base Ratio	Head Count	Head Ratio	Change
<= 1	0	0.0%	0	0.0%
<= 2	25,847,900	0.3%	26,058,980	0.3%	0.8%
<= 4	1,003,440,469	13.4%	574,384,881	7.6%	-42.8%
<= 8	838,720,241	11.2%	881,036,706	11.6%	5.0%
<= 16	1,407,999,283	18.8%	1,409,577,432	18.6%	0.1%
<= 32	1,109,220,641	14.8%	1,228,990,291	16.2%	10.8%
<= 64	625,090,399	8.3%	678,837,458	9.0%	8.6%
<= 128	319,576,877	4.3%	285,453,398	3.8%	-10.7%
<= 256	188,442,453	2.5%	166,398,596	2.2%	-11.7%
<= 512	23,552,775	0.3%	20,337,407	0.3%	-13.7%
<= 1,024	7,720,214	0.1%	7,692,265	0.1%	-0.4%
<= 2,048	17,763,052	0.2%	17,762,089	0.2%	-0.0%
<= 4,096	611,448	0.0%	611,411	0.0%	-0.0%
<= 8,192	747,337	0.0%	747,421	0.0%	0.0%
<= 16,384	237,561	0.0%	237,561	0.0%	0.0%
<= 32,768	43,860	0.0%	43,860	0.0%	0.0%
<= 65,536	13,246	0.0%	13,266	0.0%	0.2%
<= 131,072	754	0.0%	734	0.0%	-2.7%
<= 262,144	2,080	0.0%	2,081	0.0%	0.0%
<= 524,288	462	0.0%	464	0.0%	0.4%
<= 1,048,576	400	0.0%	400	0.0%	0.0%
<= 2,097,152	302	0.0%	305	0.0%	1.0%
<= 4,194,304	178	0.0%	175	0.0%	-1.7%
<= 8,388,608	240	0.0%	240	0.0%	0.0%

Uop execution stats

uop execution stats

Name	Base Count	Head Count	Change
_DELETE_SUBSCR	1,629,645	98,172,948	5,924.2%
_CALL_METHOD_DESCRIPTOR_O	26,486,020	129,202,764	387.8%
_ERROR_POP_N	698,627	1,879,206	169.0%
_POP_TOP_LOAD_CONST_INLINE_BORROW	1,404,746	2,882,377	105.2%
_BUILD_STRING	25,515,722	1,853,708	-92.7%
_CONVERT_VALUE	51,694,900	3,917,200	-92.4%
_FORMAT_SIMPLE	52,355,821	4,683,386	-91.1%
_BUILD_CONST_KEY_MAP	2,731,034	4,837,300	77.1%
_LOAD_FAST_CHECK	271,482	472,431	74.0%
_FOR_ITER_TIER_TWO	1,713,687,571	632,044,649	-63.1%
_STORE_ATTR_INSTANCE_VALUE	107,883,929	170,865,562	58.4%
_GUARD_DORV_NO_DICT	109,233,149	172,212,942	57.7%
_MAP_ADD	21,327,744	33,167,997	55.5%
_GUARD_IS_NONE_POP	46,920,922	72,596,258	54.7%
_LOAD_FAST_AND_CLEAR	17,241,896	25,069,055	45.4%
_ITER_CHECK_TUPLE	362,972,028	518,337,094	42.8%
_DEOPT	1,206,498,273	701,253,172	-41.9%
_GUARD_NOT_EXHAUSTED_TUPLE	310,723,263	438,578,389	41.1%
_POP_TOP	921,552,048	1,270,454,632	37.9%
_SET_ADD	2,174,708	1,449,209	-33.4%
_ITER_NEXT_TUPLE	204,701,448	265,662,113	29.8%
_TO_BOOL_STR	28,328,345	35,303,442	24.6%
_BUILD_TUPLE	458,412,474	561,260,970	22.4%
_DICT_MERGE	11,664,360	9,131,214	-21.7%
_COLD_EXIT	1,736,168,475	2,092,506,030	20.5%
_LOAD_GLOBAL	184,430,413	217,097,427	17.7%
_MAKE_CELL	6,868,580	5,676,439	-17.4%
_UNPACK_SEQUENCE_TUPLE	292,682,630	244,620,451	-16.4%
_INIT_CALL_PY_EXACT_ARGS_4	624,859,666	528,743,113	-15.4%
_CALL_TYPE_1	332,534,251	281,947,203	-15.2%
_STORE_DEREF	3,878,811	3,293,412	-15.1%
_BUILD_MAP	17,382,991	20,005,731	15.1%
_CONTAINS_OP	121,537,621	139,732,265	15.0%
_CALL_BUILTIN_CLASS	61,371,139	70,547,269	15.0%
_CHECK_VALIDITY_AND_SET_IP	1,204,216,927	1,364,355,486	13.3%
_LOAD_ATTR_METHOD_NO_DICT	890,347,174	997,010,577	12.0%
_LOAD_CONST_INLINE_BORROW_WITH_NULL	505,532,430	447,200,310	-11.5%
_INIT_CALL_PY_EXACT_ARGS_2	111,429,389	124,222,516	11.5%
_LOAD_DEREF	660,691,799	585,994,387	-11.3%
_BINARY_OP	897,013,453	995,790,954	11.0%
_LOAD_SUPER_ATTR_METHOD	179,122	198,576	10.9%
_STORE_FAST_3	789,513,251	704,731,814	-10.7%
_UNPACK_SEQUENCE_TWO_TUPLE	709,813,400	635,650,370	-10.4%
_STORE_FAST_5	794,904,184	713,558,220	-10.2%
_CALL_ISINSTANCE	393,886,655	353,897,522	-10.2%
_TO_BOOL_LIST	56,354,706	61,895,013	9.8%
_GET_ITER	353,635,432	388,173,609	9.8%
_LOAD_FAST_4	2,326,812,622	2,099,936,523	-9.8%
_LOAD_ATTR_SLOT_1	2,633,440	2,889,040	9.7%
_CALL_BUILTIN_FAST	1,026,661,654	928,169,796	-9.6%
_GUARD_NOT_EXHAUSTED_RANGE	690,660,237	756,069,034	9.5%
_ITER_CHECK_RANGE	691,197,557	756,606,354	9.5%
_ITER_NEXT_RANGE	648,020,137	708,493,900	9.3%
_LOAD_GLOBAL_MODULE	58,250,421	53,035,930	-9.0%
_TO_BOOL_BOOL	2,250,936,020	2,052,456,367	-8.8%
_LOAD_ATTR_METHOD_WITH_VALUES	1,183,580,122	1,084,422,360	-8.4%
_POP_FRAME	817,640,944	750,783,287	-8.2%
_SET_IP	15,025,157,536	13,797,410,122	-8.2%
_STORE_FAST_4	773,167,508	710,853,928	-8.1%
_CONTAINS_OP_DICT	430,474,904	395,802,463	-8.1%
_ITER_NEXT_LIST	1,138,037,399	1,229,195,767	8.0%
_LOAD_CONST_INLINE_WITH_NULL	2,044,738,105	1,881,684,186	-8.0%
_LOAD_FAST_5	2,442,996,138	2,251,466,057	-7.8%
_BINARY_SUBSCR_DICT	425,159,720	391,850,536	-7.8%
_CALL_TUPLE_1	7,492,460	8,077,187	7.8%
_GUARD_KEYS_VERSION	1,282,500,845	1,182,806,837	-7.8%
_GUARD_DORV_VALUES_INST_ATTR_FROM_DICT	1,332,120,184	1,229,258,462	-7.7%
_GUARD_NOT_EXHAUSTED_LIST	1,409,307,992	1,516,854,237	7.6%
_GUARD_IS_NOT_NONE_POP	169,509,762	182,169,863	7.5%
_EXIT_TRACE	2,751,406,663	2,933,593,334	6.6%
_STORE_FAST	3,392,399,502	3,168,258,014	-6.6%
_CHECK_ATTR_METHOD_LAZY_DICT	105,936,148	99,492,825	-6.1%
_LOAD_ATTR_METHOD_LAZY_DICT	105,936,148	99,492,825	-6.1%
_ITER_CHECK_LIST	1,487,490,174	1,574,078,946	5.8%
_STORE_FAST_2	894,075,757	842,573,153	-5.8%
_SWAP	1,157,627,317	1,222,467,405	5.6%
_LOAD_ATTR_INSTANCE_VALUE_1	4,491,579	4,742,001	5.6%
_TO_BOOL	250,017,700	263,642,044	5.4%
_SIDE_EXIT	4,361,835,272	4,595,055,043	5.3%
_CHECK_VALIDITY	12,292,439,087	11,646,235,379	-5.3%
_STORE_ATTR_SLOT	123,910,785	130,303,683	5.2%
_BINARY_OP_ADD_UNICODE	25,542,734	26,846,119	5.1%
_LOAD_ATTR	1,272,208,592	1,336,815,432	5.1%
_LOAD_FAST_6	1,277,810,831	1,340,996,325	4.9%
_BINARY_SUBSCR	1,302,322,297	1,238,517,555	-4.9%
_COMPARE_OP	112,689,910	107,198,152	-4.9%
_STORE_FAST_1	2,017,329,070	1,920,662,015	-4.8%
_UNARY_NOT	62,242,739	65,220,510	4.8%
_CALL_LEN	215,922,722	226,133,110	4.7%
_START_EXECUTOR	5,754,450,568	5,483,570,828	-4.7%
_LOAD_CONST_INLINE	1,526,887,718	1,597,845,531	4.6%
_BINARY_SUBSCR_TUPLE_INT	163,912,061	156,630,235	-4.4%
_GUARD_TOS_INT	226,768,945	216,774,768	-4.4%
_GUARD_BOTH_FLOAT	916,378,215	876,074,529	-4.4%
_JUMP_TO_TOP	2,258,475,873	2,160,460,416	-4.3%
_RESUME_CHECK	1,570,653,117	1,505,003,231	-4.2%
_LOAD_FAST_3	3,578,537,936	3,431,635,309	-4.1%
_GUARD_IS_TRUE_POP	2,726,629,696	2,616,299,650	-4.0%
_CHECK_FUNCTION	1,336,627,464	1,389,729,504	4.0%
_GUARD_GLOBALS_VERSION	111,287,105	106,926,374	-3.9%
_BINARY_OP_MULTIPLY_FLOAT	1,156,319,872	1,112,485,765	-3.8%
_SAVE_RETURN_OFFSET	1,861,181,452	1,791,494,238	-3.7%
_LOAD_ATTR_NONDESCRIPTOR_NO_DICT	26,842,850	25,866,432	-3.6%
_CHECK_FUNCTION_EXACT_ARGS	1,938,188,366	1,867,994,094	-3.6%
_PUSH_FRAME	1,968,110,195	1,898,422,810	-3.5%
_STORE_SLICE	149,868,340	154,965,460	3.4%
_TO_BOOL_INT	211,819,967	218,926,392	3.4%
_LOAD_FAST_7	3,403,026,482	3,515,932,445	3.3%
_CALL_METHOD_DESCRIPTOR_FAST	257,435,425	265,842,026	3.3%
_LIST_APPEND	203,935,784	197,362,232	-3.2%
_STORE_FAST_6	551,771,484	534,735,360	-3.1%
_CHECK_MANAGED_OBJECT_HAS_VALUES	2,076,722,387	2,139,565,267	3.0%
_LOAD_ATTR_INSTANCE_VALUE_0	2,071,746,168	2,134,428,246	3.0%
_GUARD_BOTH_INT	632,018,071	613,076,930	-3.0%
_CALL_METHOD_DESCRIPTOR_NOARGS	202,360,745	208,260,087	2.9%
_STORE_SUBSCR_DICT	145,710,159	149,843,383	2.8%
_GUARD_IS_FALSE_POP	5,682,504,863	5,527,731,407	-2.7%
_CHECK_STACK_SPACE	204,851,110	199,692,966	-2.5%
_CHECK_ATTR_WITH_HINT	235,751,587	230,607,749	-2.2%
_LOAD_ATTR_WITH_HINT	235,571,326	230,440,828	-2.2%
_PUSH_NULL	859,534,481	841,702,155	-2.1%
_CALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS	159,855,766	156,813,210	-1.9%
_INIT_CALL_PY_EXACT_ARGS	10,099,167	9,917,903	-1.8%
_INIT_CALL_PY_EXACT_ARGS_1	628,264,423	639,167,037	1.7%
_STORE_FAST_0	209,073,552	205,466,825	-1.7%
_INIT_CALL_PY_EXACT_ARGS_3	61,665,724	62,718,478	1.7%
_TIER2_RESUME_CHECK	249,219,717	253,404,181	1.7%
_LOAD_GLOBAL_BUILTINS	53,036,684	53,890,444	1.6%
_CONTAINS_OP_SET	1,598,619,907	1,573,176,643	-1.6%
_LOAD_FAST	6,035,374,704	6,123,700,208	1.5%
_GUARD_TYPE_VERSION	6,250,116,075	6,339,744,595	1.4%
_CALL_INTRINSIC_1	98,948,319	97,594,619	-1.4%
_LOAD_ATTR_CLASS_0	24,915,216	25,255,397	1.4%
_LIST_EXTEND	99,872,119	98,553,259	-1.3%
_COMPARE_OP_INT	1,017,012,974	1,029,652,880	1.2%
_CHECK_ATTR_CLASS	47,539,242	48,106,738	1.2%
_IS_OP	363,109,893	358,812,779	-1.2%
_STORE_GLOBAL	1,275,340	1,260,560	-1.2%
_LOAD_FAST_1	6,835,782,429	6,760,334,900	-1.1%
_LOAD_CONST_INLINE_BORROW	9,580,449,638	9,484,103,002	-1.0%
_GUARD_TOS_FLOAT	65,543,560	64,886,420	-1.0%
_GUARD_NOS_INT	2,428,806,967	2,450,126,764	0.9%
_CALL_BUILTIN_O	748,424,032	742,031,246	-0.9%
_REPLACE_WITH_TRUE	33,298,851	33,566,810	0.8%
_STORE_ATTR	58,799,445	59,269,457	0.8%
_CHECK_CALL_BOUND_METHOD_EXACT_ARGS	80,146,413	80,777,072	0.8%
_CHECK_ATTR_MODULE	7,601,010	7,542,108	-0.8%
_LOAD_ATTR_MODULE	7,601,010	7,542,108	-0.8%
_CHECK_PERIODIC	2,616,871,567	2,637,017,069	0.8%
_LOAD_ATTR_NONDESCRIPTOR_WITH_VALUES	92,256,199	92,957,829	0.8%
_UNPACK_SEQUENCE	1,566,268	1,554,914	-0.7%
_BUILD_LIST	260,972,178	262,762,984	0.7%
_STORE_FAST_7	1,223,210,687	1,214,962,327	-0.7%
_BINARY_SLICE	122,812,761	122,040,546	-0.6%
_BINARY_OP_SUBTRACT_INT	464,143,424	461,493,475	-0.6%
_INIT_CALL_BOUND_METHOD_EXACT_ARGS	80,079,413	80,532,952	0.6%
_CHECK_STACK_SPACE_OPERAND	967,371,605	972,033,169	0.5%
_LOAD_FAST_0	6,023,113,325	6,051,023,057	0.5%
_INIT_CALL_PY_EXACT_ARGS_0	424,863,083	426,725,191	0.4%
_UNARY_NEGATIVE	25,164,774	25,062,818	-0.4%
_GUARD_BOTH_UNICODE	978,992,454	975,232,194	-0.4%
_LOAD_ATTR_SLOT_0	745,175,886	747,927,634	0.4%
_BINARY_OP_ADD_FLOAT	554,586,180	556,453,880	0.3%
_TO_BOOL_NONE	180,543,155	181,141,367	0.3%
_BINARY_SUBSCR_LIST_INT	1,103,675,998	1,107,225,336	0.3%
_COPY	1,333,131,499	1,328,861,898	-0.3%
_LOAD_FAST_2	3,182,707,165	3,172,621,804	-0.3%
_RETURN_GENERATOR	91,061,914	91,340,939	0.3%
_COMPARE_OP_STR	1,837,494,440	1,832,167,913	-0.3%
_COPY_FREE_VARS	81,379,946	81,177,795	-0.2%
_STORE_SUBSCR_LIST_INT	490,870,022	489,812,942	-0.2%
_BINARY_OP_MULTIPLY_INT	185,794,604	186,148,084	0.2%
_CALL_STR_1	67,905,056	67,798,674	-0.2%
_UNARY_INVERT	12,990,812	12,971,658	-0.1%
_SET_FUNCTION_ATTRIBUTE	78,474,688	78,588,666	0.1%
_MAKE_FUNCTION	93,509,902	93,610,627	0.1%
_STORE_SUBSCR	381,433,900	381,071,318	-0.1%
_GUARD_BUILTINS_VERSION	45,866,884	45,823,824	-0.1%
_LOAD_ATTR_CLASS_1	20,485,700	20,502,900	0.1%
_BINARY_OP_ADD_INT	2,521,904,335	2,519,803,460	-0.1%
_UNPACK_SEQUENCE_LIST	81,626,769	81,592,260	-0.0%
_BINARY_SUBSCR_STR_INT	1,216,990,883	1,216,602,013	-0.0%
_CALL_BUILTIN_FAST_WITH_KEYWORDS	91,072,135	91,096,605	0.0%
_DYNAMIC_EXIT	185,418,396	185,383,407	-0.0%
_BUILD_SLICE	139,781,460	139,805,248	0.0%
_COMPARE_OP_FLOAT	101,252,850	101,264,171	0.0%
_GET_YIELD_FROM_ITER	916,047	916,129	0.0%
_GUARD_NOS_FLOAT	613,674,313	613,722,987	0.0%
_BINARY_OP_SUBTRACT_FLOAT	383,046,880	383,035,460	-0.0%
_GET_AWAITABLE	653,796	653,798	0.0%
_FOR_ITER_GEN_FRAME	107,033,363	107,033,192	-0.0%
_GET_ANEXT	125,514,720	125,514,720	0.0%
_STORE_NAME	545,860	545,860	0.0%
_POP_EXCEPT	7,620	7,620	0.0%
_UNPACK_EX	104	104	0.0%
_DELETE_ATTR		2,009,931

Pair counts

Pair counts for top 100 Non-JIT uop pairs

Pairs of specialized operations that deoptimize and are then followed by the corresponding unspecialized instruction are not counted as pairs.

Not included in comparative output.

Unsupported opcodes

unsupported opcodes

Opcode	Base Count	Head Count	Change
SEND_GEN	260	1,400	438.5%
BUILD_SET	525	1,318	151.0%
CALL_FUNCTION_EX	6,061	11,215	85.0%
IMPORT_NAME	731	1,028	40.6%
BINARY_OP_INPLACE_ADD_UNICODE	703	603	-14.2%
YIELD_VALUE	140,949	121,092	-14.1%
CALL_LIST_APPEND	8,041	6,974	-13.3%
CALL_ALLOC_AND_ENTER_INIT	1,911	1,672	-12.5%
CALL_PY_WITH_DEFAULTS	11,800	10,425	-11.7%
BINARY_SUBSCR_GETITEM	3,280	2,940	-10.4%
CALL_KW	30,710	32,888	7.1%
CALL	184,032	171,941	-6.6%
LOAD_ATTR_PROPERTY	8,210	7,808	-4.9%
SEND	32,412	32,414	0.0%
LOAD_NAME	1,360	1,360	0.0%
BEFORE_WITH	400	400	0.0%
STORE_ATTR_WITH_HINT	300	300	0.0%
RAISE_VARARGS		160

Optimizer errored out with opcode

Optimization stopped after encountering this opcode

Rare events

Counts of rare/unlikely events

Event	Base Count	Head Count	Change
set class ⓘ Setting an object's class, obj.__class__ = ...	0	0
set bases ⓘ Setting the bases of a class, cls.__bases__ = ...	281	281	0.0%
set eval frame func ⓘ Setting the PEP 523 frame eval function _PyInterpreterState_SetFrameEvalFunc()	0	0
builtin dict ⓘ Modifying the builtins, __builtins__.__dict__[var] = ...	0	0
func modification ⓘ Modifying a function, e.g. func.__defaults__ = ..., etc.	461	461	0.0%
watched dict modification ⓘ A watched dict has been modified	1,120	1,120	0.0%
watched globals modification ⓘ A watched globals() dict has been modified	1,120	1,120	0.0%

Meta stats

Meta statistics

	Base Count	Head Count	Change
Number of data files	2,000	2,000	0.0%

---

Stats gathered on: 2024-04-30