[Python-Dev] Free lists (original) (raw)

Larry Hastings larry at hastings.org
Sun May 10 17:32:02 CEST 2015

On 05/09/2015 11:22 PM, Serhiy Storchaka wrote:

On 10.05.15 02:25, Ian Cordasco wrote:

Can you share how you gathered them so someone could run them on a 64-bit build? This is quick and dirty patch. It generates 8 GB log file!

I ran it under 64-bit Linux. Actually it generated a 10GB log file. It was stalled at test_multiprocessing_fork for five hours so I killed it.

What follows are the (apparently) partial results. I think it makes a good case for a one-element freelist for 64-bit builds.

//arry/

--

type count % acc.%

builtin_function_or_method 131028598 37.25% 37.25% method 52062496 14.80% 52.05% int 47600237 13.53% 65.59% str 43841584 12.46% 78.05% generator 14038624 3.99% 82.04% float 8617481 2.45% 84.49% list_iterator 8214121 2.34% 86.83% bytes 7884898 2.24% 89.07% tuple_iterator 5172174 1.47% 90.54% _io.StringIO 3482733 0.99% 91.53% set 3335168 0.95% 92.48% str_iterator 2856373 0.81% 93.29% list 2245981 0.64% 93.93% dict 1682253 0.48% 94.41% method-wrapper 1574412 0.45% 94.86% function 1475393 0.42% 95.28% traceback 1417094 0.40% 95.68% tuple 1181899 0.34% 96.01% memoryview 1103226 0.31% 96.33% cell 1047245 0.30% 96.63% managedbuffer 1044764 0.30% 96.92% bytearray 714337 0.20% 97.13% range_iterator 498240 0.14% 97.27% range 485325 0.14% 97.41% super 473542 0.13% 97.54% map 446608 0.13% 97.67% frame 426570 0.12% 97.79% set_iterator 424526 0.12% 97.91% Leaf 391824 0.11% 98.02% symtable 376815 0.11% 98.13%

int 47600237 13.53% 0 294964 0.62% 0.62% 1 36135772 75.92% 76.53% 2 4504046 9.46% 86.00% 3 2109837 4.43% 90.43% 4 1277995 2.68% 93.11% 5 542775 1.14% 94.25% 6 485451 1.02% 95.27% ...

bytes 7884898 2.24% 0 849 0.01% 0.01% 1 250357 3.18% 3.19% 2 450310 5.71% 8.90% 3 259659 3.29% 12.19% 4 1157554 14.68% 26.87% 5 77493 0.98% 27.85% 6 139816 1.77% 29.63% 7 165399 2.10% 31.72% 8 191821 2.43% 34.16% 9 63009 0.80% 34.96% 10 48751 0.62% 35.57% 11 50505 0.64% 36.22% 12 94186 1.19% 37.41% 13 33927 0.43% 37.84% 14 123546 1.57% 39.41% 15 36565 0.46% 39.87% 16 447183 5.67% 45.54% 17 186609 2.37% 47.91% 18 1301737 16.51% 64.42% ...

tuple 1181899 0.34% 0 47 0.00% 0.00% 1 120156 10.17% 10.17% 2 340983 28.85% 39.02% 3 80924 6.85% 45.87% 4 78908 6.68% 52.54% 5 35502 3.00% 55.55% 6 171292 14.49% 70.04% 7 136474 11.55% 81.59% 8 48435 4.10% 85.69% ...

-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20150510/a1793b1e/attachment-0001.html>

More information about the Python-Dev mailing list