nginx все воркеры на 1 ядро?

[dim1]

Debian GNU/Linux 7 
Linux version 2.6.32-5-amd64 (Debian 2.6.32-48squeeze6)

посмотрел atop


CPU | sys       6% | user     10% | irq      19% | idle    763%  | wait     
1% | avgf 1.61GHz | avgscal  47% |

cpu | sys       5% | user      8% | irq      20% | idle     67%  | cpu000 w 
1% | avgf 1.61GHz | avgscal  47% |
cpu | sys       1% | user      1% | irq       0% | idle     98%  | cpu004 w 
0% | avgf 1.60GHz | avgscal  47% |
cpu | sys       0% | user      0% | irq       0% | idle    100%  | cpu006 w 
0% | avgf 1.62GHz | avgscal  47% |
cpu | sys       0% | user      0% | irq       0% | idle    100%  | cpu003 w 
0% | avgf 1.60GHz | avgscal  47% |
....


27891 www www    1   13.70s  12.56s     0K     4K      0K 50736K --   -  S  
  0   4% nginx
27889 www www    1   13.70s  12.56s     0K     0K      0K 51268K --   -  S  
  0   4% nginx
27890 www www    1   13.61s  12.18s     0K    16K     28K 50152K --   -  S  
  0   4% nginx
27888 www www    1   13.20s  12.54s     0K    12K      0K 49892K --   -  S  
  0   4% nginx

Везде стоит CPUNR=0

Т.е., если не ошибаюсь, судя по этим данным - все 4 воркера nginx работает
на 1 ядре процессора из 4x2?!

Поставил 8 воркеров и в nginx добавил worker_cpu_afffinity:

CPU | sys       4% | user      6% | irq       9% | idle    779%  | wait     
2% | avgf 1.61GHz | avgscal  47% |

cpu | sys       1% | user      2% | irq       9% | idle     87%  | cpu000 w 
2% | avgf 1.62GHz | avgscal  47% |
cpu | sys       1% | user      2% | irq       0% | idle     97%  | cpu004 w 
0% | avgf 1.60GHz | avgscal  47% |
cpu | sys       0% | user      1% | irq       0% | idle     99%  | cpu006 w 
0% | avgf 1.61GHz | avgscal  47% |
cpu | sys       1% | user      1% | irq       0% | idle     99%  | cpu005 w 
0% | avgf 1.61GHz | avgscal  47% |
...
 9066 www www    1    7.68s   9.40s     0K     4K   1068K 31460K --   -  R  
  4   3% nginx
 9062 www www    1    4.70s   4.59s     0K     0K    420K 16760K --   -  S  
  0   2% nginx
 9063 www www    1    2.20s   2.31s     0K     0K    244K  7356K --   -  S  
  1   1% nginx
 9069 www www    1    1.86s   1.63s     0K     8K     96K  5620K --   -  S  
  6   1% nginx
 9065 www www    1    1.68s   1.68s     0K     8K    192K  5216K --   -  S  
  3   1% nginx
 9064 www www    1    1.17s   1.36s     0K    16K    148K  4016K --   -  S  
  2   0% nginx
 9067 www www    1    1.15s   1.16s     0K     0K    212K  3756K --   -  S  
  5   0% nginx
 9070 www www    1    0.98s   1.04s     0K     0K     24K  3272K --   -  S  
  7   0% nginx
Картинка лучше, но явно не равномерно.

Posted at Nginx Forum: https://forum.nginx.org/read.php?21,265285,265285#msg-265285