diff options
Diffstat (limited to 'APACHE_1_3_42/htdocs/manual/vhosts/fd-limits.html.en')
| -rw-r--r-- | APACHE_1_3_42/htdocs/manual/vhosts/fd-limits.html.en | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/APACHE_1_3_42/htdocs/manual/vhosts/fd-limits.html.en b/APACHE_1_3_42/htdocs/manual/vhosts/fd-limits.html.en new file mode 100644 index 0000000000..dc09fb2d57 --- /dev/null +++ b/APACHE_1_3_42/htdocs/manual/vhosts/fd-limits.html.en @@ -0,0 +1,73 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> + +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <meta name="generator" content="HTML Tidy, see www.w3.org" /> + + <title>Apache Server Virtual Host Support</title> + </head> + <!-- Background white, links blue (unvisited), navy (visited), red (active) --> + + <body bgcolor="#FFFFFF" text="#000000" link="#0000FF" + vlink="#000080" alink="#FF0000"> + <!--#include virtual="header.html" --> + + <h1 align="CENTER">File Descriptor Limits</h1> + + <p>When using a large number of Virtual Hosts, Apache may run + out of available file descriptors (sometimes called <cite>file + handles</cite> if each Virtual Host specifies different log + files. The total number of file descriptors used by Apache is + one for each distinct error log file, one for every other log + file directive, plus 10-20 for internal use. Unix operating + systems limit the number of file descriptors that may be used + by a process; the limit is typically 64, and may usually be + increased up to a large hard-limit.</p> + + <p>Although Apache attempts to increase the limit as required, + this may not work if:</p> + + <ol> + <li>Your system does not provide the setrlimit() system + call.</li> + + <li>The setrlimit(RLIMIT_NOFILE) call does not function on + your system (such as Solaris 2.3)</li> + + <li>The number of file descriptors required exceeds the hard + limit.</li> + + <li>Your system imposes other limits on file descriptors, + such as a limit on stdio streams only using file descriptors + below 256. (Solaris 2)</li> + </ol> + In the event of problems you can: + + <ul> + <li>Reduce the number of log files; don't specify log files + in the VirtualHost sections, but only log to the main log + files.</li> + + <li> + If you system falls into 1 or 2 (above), then increase the + file descriptor limit before starting Apache, using a + script like + + <blockquote> + <code>#!/bin/sh<br /> + ulimit -S -n 100<br /> + exec httpd</code> + </blockquote> + </li> + </ul> + + <p>Please see the <a + href="../misc/descriptors.html">Descriptors and Apache</a> + document containing further details about file descriptor + problems and how they can be solved on your operating + system.</p> + <!--#include virtual="footer.html" --> + </body> +</html> + |