Mercurial > hg > nginx-site
comparison xml/en/docs/freebsd_tuning.xml @ 1144:ac131944d349
Changed infinitive to gerund after "allow".
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Mon, 07 Apr 2014 17:14:21 +0400 |
parents | 9ca8b71e0e03 |
children |
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1143:b93422ca9fe7 | 1144:ac131944d349 |
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53 tcp4 0/0/128 *.22 | 53 tcp4 0/0/128 *.22 |
54 </programlisting> | 54 </programlisting> |
55 | 55 |
56 Here are 192 unaccepted connections and most likely new coming connections | 56 Here are 192 unaccepted connections and most likely new coming connections |
57 are discarding. Although the limit is 128 connections, FreeBSD allows | 57 are discarding. Although the limit is 128 connections, FreeBSD allows |
58 to receive 1.5 times connections than the limit before it starts to discard | 58 receiving 1.5 times connections than the limit before it starts to discard |
59 the new connections. You may increase the limit using | 59 the new connections. You may increase the limit using |
60 | 60 |
61 <programlisting> | 61 <programlisting> |
62 sysctl kern.ipc.somaxconn=4096 | 62 sysctl kern.ipc.somaxconn=4096 |
63 </programlisting> | 63 </programlisting> |
232 </para> | 232 </para> |
233 | 233 |
234 <para> | 234 <para> |
235 There is way not to use the jumbo clusters while serving static files: | 235 There is way not to use the jumbo clusters while serving static files: |
236 the <i>sendfile()</i> system call. | 236 the <i>sendfile()</i> system call. |
237 The sendfile allows to send a file or its part to a socket directly | 237 The sendfile allows sending a file or its part to a socket directly |
238 without reading the parts in an application buffer. | 238 without reading the parts in an application buffer. |
239 It creates the mbufs chain where the mbufs point to the file pages that are | 239 It creates the mbufs chain where the mbufs point to the file pages that are |
240 already present in FreeBSD cache memory, and passes the chain to | 240 already present in FreeBSD cache memory, and passes the chain to |
241 the TCP/IP stack. | 241 the TCP/IP stack. |
242 Thus, sendfile decreases both CPU usage by omitting two memory copy operations, | 242 Thus, sendfile decreases both CPU usage by omitting two memory copy operations, |