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Submitted by: atlanta <mukul@Eng.Sun.COM> git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@77520 13f79535-47bb-0310-9956-ffa450edef68
135 lines
3.6 KiB
HTML
135 lines
3.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
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<html>
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<head>
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<title>Hints on Running a High-Performance Web Server</title>
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</head>
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<body>
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<!--#include virtual="header.html" -->
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<h2>Hints on Running a High-Performance Web Server</H2>
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Running Apache on a heavily loaded web server, one often encounters
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problems related to the machine and OS configuration. "Heavy" is
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relative, of course - but if you are seeing more than a couple hits
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per second on a sustained basis you should consult the pointers on
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this page. In general the suggestions involve how to tune your kernel
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for the heavier TCP load, hardware/software conflicts that arise, etc.
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<UL>
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<LI><A HREF="#AUX">A/UX (Apple's UNIX)</A>
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<LI><A HREF="#BSD">BSD-based (BSDI, FreeBSD, etc)</A>
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<LI><A HREF="#DEC">Digital UNIX</A>
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<LI><A HREF="#HP">Hewlett-Packard</A>
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<LI><A HREF="#Linux">Linux</A>
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<LI><A HREF="#SGI">SGI</A>
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<LI><A HREF="#Solaris">Solaris</A>
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<LI><A HREF="#SunOS">SunOS 4.x</A>
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</UL>
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<HR>
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<A NAME="AUX">
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<H3>A/UX (Apple's UNIX)</H3>
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</A>
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If you are running Apache on A/UX, a page that gives some helpful
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performance hints (concerning the <I>listen()</I> queue and using
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virtual hosts)
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<A HREF="http://www.jaguNET.com/apache.html">can be found here</A>
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<P><HR>
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<A NAME="BSD">
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<H3>BSD-based (BSDI, FreeBSD, etc)</H3>
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</A>
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<A HREF="perf-bsd44.html#initial">Quick</A> and
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<A HREF="perf-bsd44.html#detail">detailed</A>
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performance tuning hints for BSD-derived systems.
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<P><HR>
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<A NAME="DEC">
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<H3>Digital UNIX</H3>
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</A>
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We have some <A HREF="perf-dec.html">newsgroup postings</A> on how to
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tune Digital UNIX 3.2 and 4.0.
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<P><HR>
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<A NAME="HP">
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<H3>Hewlett-Packard</H3>
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</A>
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Some documentation on tuning HP machines can be found at <A
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HREF="http://www.software.hp.com/internet/perf/tuning.html">http://www.software.hp.com/internet/perf/tuning.html</A>.
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<P><HR>
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<A NAME="Linux">
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<H3>Linux</H3>
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</A>
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The most common problem on Linux shows up on heavily-loaded systems
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where the whole server will appear to freeze for a couple of minutes
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at a time, and then come back to life. This has been traced to a
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listen() queue overload - certain Linux implementations have a low
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value set for the incoming connection queue which can cause problems.
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Please see our <a
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href="http://www.qosina.com/~awm/apache/linux-tcp.html">Using Apache on
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Linux</a> page for more info on how to fix this.
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<P><HR>
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<A NAME="SGI">
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<H3>SGI</H3>
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<UL>
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<LI><A HREF="http://www.sgi.com/Products/WebFORCE/TuningGuide.html">
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WebFORCE Web Server Tuning Guidelines for IRIX 5.3,
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<http://www.sgi.com/Products/WebFORCE/TuningGuide.html></A>
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</UL>
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<P><HR>
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<A NAME="Solaris">
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<H3>Solaris 2.4</H3>
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</A>
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The Solaris 2.4 TCP implementation has a few inherent limitations that
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only became apparent under heavy loads. This has been fixed to some
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extent in 2.5 (and completely revamped in 2.6), but for now consult
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the following URL for tips on how to expand the capabilities if you
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are finding slowdowns and lags are hurting performance.
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<UL>
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<LI><A href="http://www.sun.com/sun-on-net/Sun.Internet.Solutions/performance/">
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World Wide Web Server Performance,
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<http://www.sun.com/sun-on-net/Sun.Internet.Solutions/performance/></a>
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<LI><A HREF="http://www.sun.com/solaris/products/siss/">
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Solaris Internet Server Supplement for 2.5.1</A>
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</UL>
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<P><HR>
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<A NAME="SunOS">
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<H3>SunOS 4.x</H3>
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</A>
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More information on tuning SOMAXCONN on SunOS can be found at
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<A HREF="http://www.islandnet.com/~mark/somaxconn.html">
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http://www.islandnet.com/~mark/somaxconn.html</A>.
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<P><HR>
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<H3>More welcome!</H3>
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If you have tips to contribute, send mail to <a
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href="mailto:brian@organic.com">brian@organic.com</a>
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<!--#include virtual="footer.html" -->
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</body></html>
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