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annotate xml/ru/docs/events.xml @ 659:77a3314c74a7

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Avoid the uses of second person.
author Ruslan Ermilov <ru@nginx.com>
date Tue, 28 Aug 2012 09:23:40 +0000
parents 764fbac1b8b4
children 629630df119a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 <!--
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2 Copyright (C) Igor Sysoev
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3 Copyright (C) Nginx, Inc.
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4 -->
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5
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6 <!DOCTYPE article SYSTEM "../../../dtd/article.dtd">
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7
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8 <article name="Методы обработки соединений"
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9 link="/ru/docs/events.html"
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10 lang="ru"
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11 rev="1">
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12
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13 <section>
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14
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15 <para>
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16 nginx поддерживает различные методы обработки соединений.
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17 Наличие того или иного метода зависит от используемой платформы.
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18 Если на платформе доступно сразу несколько методов, nginx обычно
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19 сам выбирает наиболее эффективный метод.
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20 Однако, при необходимости можно явно выбрать метод обработки
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21 соединений с помощью директивы
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22 <link doc="ngx_core_module.xml" id="use"/>.
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23 </para>
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24
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25 <para>
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26 Поддерживаются следующие методы обработки соединений:
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27 <list type="bullet">
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28
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29 <listitem>
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30 <para>
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31 <literal>select</literal>&mdash;стандартный метод.
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32 Модуль для поддержки этого метода собирается автоматически,
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33 если на платформе не обнаружено более эффективного метода.
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34 Можно принудительно разрешить или запретить сборку этого модуля
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35 с помощью параметров <literal>--with-select_module</literal> и
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36 <literal>--without-select_module</literal>.
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37 </para>
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38 </listitem>
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39
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40 <listitem>
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41 <para>
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42 <literal>poll</literal>&mdash;стандартный метод.
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43 Модуль для поддержки этого метода собирается автоматически,
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44 если на платформе не обнаружено более эффективного метода.
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45 Можно принудительно разрешить или запретить сборку этого модуля
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46 с помощью параметров <literal>--with-poll_module</literal> и
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47 <literal>--without-poll_module</literal>.
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48 </para>
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49 </listitem>
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50
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51 <listitem>
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52 <para>
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53 <literal>kqueue</literal>&mdash;эффективный метод, используемый
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54 во FreeBSD 4.1+, OpenBSD 2.9+, NetBSD 2.0 и Mac OS X.
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55 </para>
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56 </listitem>
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57
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58 <listitem>
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59 <para>
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60 <literal>epoll</literal>&mdash;эффективный метод, используемый
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61 в Linux 2.6+.
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62 <note>
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63 В некоторых старых дистрибутивах, например SuSE 8.2,
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64 есть патчи для поддержки epoll ядром 2.4.
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65 </note>
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66 </para>
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67 </listitem>
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69 <listitem>
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70 <para>
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71 <literal>rtsig</literal>&mdash;real time signals, эффективный метод,
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72 используемый в Linux 2.2.19+.
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73 По умолчанию в общесистемной очереди событий может одновременно
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74 находиться не более 1024 сигналов.
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75 На нагруженных серверах может потребоваться увеличить размер очереди
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76 с помощью параметра ядра <path>/proc/sys/kernel/rtsig-max</path>.
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77 Однако, начиная с Linux 2.6.6-mm2, этого параметра уже нет и для каждого
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78 процесса существует отдельная очередь сигналов, размер которой
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79 ограничивается с помощью <literal>RLIMIT_SIGPENDING</literal>
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80 и может быть изменён с помощью
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81 <link doc="ngx_core_module.xml" id="worker_rlimit_sigpending"/>.
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82 </para>
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83
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84 <para>
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85 При переполнении очереди nginx сбрасывает её и начинает обрабатывать
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86 соединения с помощью метода <literal>poll</literal> до тех пор,
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87 пока ситуация не нормализуется.
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88 </para>
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89 </listitem>
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91 <listitem>
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92 <para>
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93 <literal>/dev/poll</literal>&mdash;эффективный метод, используемый
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94 в Solaris 7 11/99+, HP/UX 11.22+ (eventport), IRIX 6.5.15+
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95 и Tru64 UNIX 5.1A+.
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96 </para>
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97 </listitem>
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98
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99 <listitem>
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100 <para>
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101 <literal>eventport</literal>&mdash;event ports, эффективный метод,
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102 используемый в Solaris 10.
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103 </para>
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104 </listitem>
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105
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106 </list>
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107 </para>
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108
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109 </section>
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110
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111 </article>