[issue44340] Add support for building cpython with clang thin lto

Sun Jul 18 19:47:12 EDT 2021

Dong-hee Na <donghee.na at python.org> added the comment:

The test is executed under the following environments.
There is no significant performance changed.

MS Azure: D8s v3
CentOS Linux release 8.2.2004 (Core)

[corona10 at PythonLinux cpython]$ ./python -m pyperformance compare full.json thin.json
full.json
=========

Performance version: 1.0.2
Report on Linux-4.18.0-193.28.1.el8_2.x86_64-x86_64-with-glibc2.28
Number of logical CPUs: 8
Start date: 2021-07-18 23:18:04.644067
End date: 2021-07-18 23:44:20.951457

thin.json
=========

Performance version: 1.0.2
Report on Linux-4.18.0-193.28.1.el8_2.x86_64-x86_64-with-glibc2.28
Number of logical CPUs: 8
Start date: 2021-07-18 22:46:00.717563
End date: 2021-07-18 23:12:19.376766

### 2to3 ###
Mean +- std dev: 570 ms +- 17 ms -> 568 ms +- 20 ms: 1.00x faster
Not significant

### chameleon ###
Mean +- std dev: 16.9 ms +- 0.6 ms -> 16.9 ms +- 0.9 ms: 1.00x slower
Not significant

### chaos ###
Mean +- std dev: 182 ms +- 7 ms -> 179 ms +- 7 ms: 1.02x faster
Not significant

### crypto_pyaes ###
Mean +- std dev: 198 ms +- 6 ms -> 192 ms +- 6 ms: 1.03x faster
Significant (t=5.26)

### deltablue ###
Mean +- std dev: 13.4 ms +- 0.5 ms -> 13.5 ms +- 0.5 ms: 1.01x slower
Not significant

### django_template ###
Mean +- std dev: 94.0 ms +- 3.2 ms -> 91.8 ms +- 3.7 ms: 1.02x faster
Significant (t=3.53)

### dulwich_log ###
Mean +- std dev: 178 ms +- 6 ms -> 176 ms +- 8 ms: 1.02x faster
Not significant

### fannkuch ###
Mean +- std dev: 764 ms +- 17 ms -> 755 ms +- 15 ms: 1.01x faster
Not significant

### float ###
Mean +- std dev: 194 ms +- 8 ms -> 187 ms +- 6 ms: 1.03x faster
Significant (t=4.95)

### go ###
Mean +- std dev: 388 ms +- 14 ms -> 387 ms +- 14 ms: 1.00x faster
Not significant

### hexiom ###
Mean +- std dev: 17.0 ms +- 0.7 ms -> 17.5 ms +- 0.8 ms: 1.03x slower
Significant (t=-3.40)

### json_dumps ###
Mean +- std dev: 22.5 ms +- 0.9 ms -> 22.3 ms +- 0.7 ms: 1.01x faster
Not significant

### json_loads ###
Mean +- std dev: 45.8 us +- 2.3 us -> 46.5 us +- 1.8 us: 1.02x slower
Not significant

### logging_format ###
Mean +- std dev: 19.1 us +- 0.9 us -> 18.7 us +- 0.7 us: 1.02x faster
Not significant

### logging_silent ###
Mean +- std dev: 336 ns +- 17 ns -> 334 ns +- 18 ns: 1.00x faster
Not significant

### logging_simple ###
Mean +- std dev: 17.1 us +- 0.8 us -> 16.7 us +- 0.8 us: 1.03x faster
Significant (t=3.12)

### mako ###
Mean +- std dev: 27.6 ms +- 1.6 ms -> 26.6 ms +- 0.9 ms: 1.04x faster
Significant (t=4.11)

### meteor_contest ###
Mean +- std dev: 172 ms +- 5 ms -> 169 ms +- 5 ms: 1.01x faster
Not significant

### nbody ###
Mean +- std dev: 232 ms +- 8 ms -> 224 ms +- 8 ms: 1.04x faster
Significant (t=6.03)

### nqueens ###
Mean +- std dev: 167 ms +- 7 ms -> 166 ms +- 7 ms: 1.00x faster
Not significant

### pathlib ###
Mean +- std dev: 38.2 ms +- 1.7 ms -> 37.4 ms +- 1.9 ms: 1.02x faster
Significant (t=2.41)

### pickle ###
Mean +- std dev: 19.4 us +- 0.8 us -> 19.5 us +- 0.8 us: 1.00x slower
Not significant

### pickle_dict ###
Mean +- std dev: 43.5 us +- 1.9 us -> 43.0 us +- 1.9 us: 1.01x faster
Not significant

### pickle_list ###
Mean +- std dev: 6.81 us +- 0.26 us -> 6.81 us +- 0.27 us: 1.00x slower
Not significant

### pickle_pure_python ###
Mean +- std dev: 840 us +- 28 us -> 825 us +- 28 us: 1.02x faster
Not significant

### pidigits ###
Mean +- std dev: 294 ms +- 9 ms -> 294 ms +- 9 ms: 1.00x slower
Not significant

### pyflate ###
Mean +- std dev: 1.17 sec +- 0.02 sec -> 1.16 sec +- 0.03 sec: 1.01x faster
Not significant

### python_startup ###
Mean +- std dev: 15.3 ms +- 0.6 ms -> 15.3 ms +- 0.6 ms: 1.00x faster
Not significant

### python_startup_no_site ###
Mean +- std dev: 10.3 ms +- 0.3 ms -> 10.2 ms +- 0.4 ms: 1.01x faster
Not significant

### raytrace ###
Mean +- std dev: 911 ms +- 19 ms -> 911 ms +- 21 ms: 1.00x faster
Not significant

### regex_compile ###
Mean +- std dev: 314 ms +- 12 ms -> 310 ms +- 10 ms: 1.01x faster
Not significant

### regex_dna ###
Mean +- std dev: 317 ms +- 10 ms -> 299 ms +- 9 ms: 1.06x faster
Significant (t=9.99)

### regex_effbot ###
Mean +- std dev: 6.20 ms +- 0.27 ms -> 5.80 ms +- 0.25 ms: 1.07x faster
Significant (t=8.49)

### regex_v8 ###
Mean +- std dev: 43.0 ms +- 1.3 ms -> 39.9 ms +- 1.9 ms: 1.08x faster
Significant (t=10.22)

### richards ###
Mean +- std dev: 158 ms +- 8 ms -> 157 ms +- 8 ms: 1.01x faster
Not significant

### scimark_fft ###
Mean +- std dev: 727 ms +- 18 ms -> 716 ms +- 18 ms: 1.02x faster
Not significant

### scimark_lu ###
Mean +- std dev: 309 ms +- 11 ms -> 304 ms +- 10 ms: 1.01x faster
Not significant

### scimark_monte_carlo ###
Mean +- std dev: 180 ms +- 6 ms -> 181 ms +- 8 ms: 1.00x slower
Not significant

### scimark_sor ###
Mean +- std dev: 355 ms +- 9 ms -> 352 ms +- 11 ms: 1.01x faster
Not significant

### scimark_sparse_mat_mult ###
Mean +- std dev: 9.51 ms +- 0.32 ms -> 9.19 ms +- 0.34 ms: 1.03x faster
Significant (t=5.27)

### spectral_norm ###
Mean +- std dev: 277 ms +- 10 ms -> 272 ms +- 9 ms: 1.02x faster
Not significant

### sqlalchemy_declarative ###
Mean +- std dev: 273 ms +- 10 ms -> 273 ms +- 10 ms: 1.00x faster
Not significant

### sqlalchemy_imperative ###
Mean +- std dev: 46.2 ms +- 2.3 ms -> 45.6 ms +- 2.1 ms: 1.01x faster
Not significant

### sqlite_synth ###
Mean +- std dev: 4.39 us +- 0.29 us -> 4.37 us +- 0.23 us: 1.00x faster
Not significant

### sympy_expand ###
Mean +- std dev: 996 ms +- 22 ms -> 993 ms +- 31 ms: 1.00x faster
Not significant

### sympy_integrate ###
Mean +- std dev: 42.6 ms +- 1.9 ms -> 43.5 ms +- 2.0 ms: 1.02x slower
Significant (t=-2.47)

### sympy_str ###
Mean +- std dev: 607 ms +- 18 ms -> 599 ms +- 15 ms: 1.01x faster
Not significant

### sympy_sum ###
Mean +- std dev: 350 ms +- 12 ms -> 344 ms +- 11 ms: 1.02x faster
Not significant

### telco ###
Mean +- std dev: 11.3 ms +- 0.6 ms -> 11.2 ms +- 0.6 ms: 1.01x faster
Not significant

### tornado_http ###
Mean +- std dev: 294 ms +- 11 ms -> 296 ms +- 12 ms: 1.01x slower
Not significant

### unpack_sequence ###
Mean +- std dev: 78.4 ns +- 7.1 ns -> 75.7 ns +- 2.5 ns: 1.04x faster
Significant (t=2.86)

### unpickle ###
Mean +- std dev: 26.1 us +- 1.1 us -> 27.3 us +- 1.3 us: 1.05x slower
Significant (t=-5.57)

### unpickle_list ###
Mean +- std dev: 6.65 us +- 0.21 us -> 6.68 us +- 0.31 us: 1.00x slower
Not significant

### unpickle_pure_python ###
Mean +- std dev: 567 us +- 21 us -> 572 us +- 21 us: 1.01x slower
Not significant

### xml_etree_generate ###
Mean +- std dev: 165 ms +- 8 ms -> 166 ms +- 8 ms: 1.00x slower
Not significant

### xml_etree_iterparse ###
Mean +- std dev: 187 ms +- 6 ms -> 187 ms +- 8 ms: 1.00x faster
Not significant

### xml_etree_parse ###
Mean +- std dev: 274 ms +- 10 ms -> 274 ms +- 11 ms: 1.00x slower
Not significant

### xml_etree_process ###
Mean +- std dev: 142 ms +- 6 ms -> 139 ms +- 6 ms: 1.02x faster
Not significant

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44340>
_______________________________________