diff options
| author | Jason McIntyre <jmc@cvs.openbsd.org> | 2005-07-27 20:54:45 +0000 |
|---|---|---|
| committer | Jason McIntyre <jmc@cvs.openbsd.org> | 2005-07-27 20:54:45 +0000 |
| commit | 018985f75ef615729a745e6922b2fe9bd7bd31bc (patch) | |
| tree | 520f972075019002808478dd01e9c46ae23224ad /usr.sbin/httpd/htdocs/manual/misc | |
| parent | 77c6a09cbd49af3a28373fa90768560b070f47cf (diff) | |
from tamas tevesz:
==> remove of a number of alien platforms
==> remove broken links in sitemap.html
==> remove unreferenced install_1_1.html
Diffstat (limited to 'usr.sbin/httpd/htdocs/manual/misc')
| -rw-r--r-- | usr.sbin/httpd/htdocs/manual/misc/index.html | 11 | ||||
| -rw-r--r-- | usr.sbin/httpd/htdocs/manual/misc/perf-dec.html | 297 | ||||
| -rw-r--r-- | usr.sbin/httpd/htdocs/manual/misc/perf-hp.html | 107 |
3 files changed, 0 insertions, 415 deletions
diff --git a/usr.sbin/httpd/htdocs/manual/misc/index.html b/usr.sbin/httpd/htdocs/manual/misc/index.html index a97f7cb7b99..50faa72182c 100644 --- a/usr.sbin/httpd/htdocs/manual/misc/index.html +++ b/usr.sbin/httpd/htdocs/manual/misc/index.html @@ -96,17 +96,6 @@ <dd>Some notes about ways to improve/optimize Apache performance on BSD 4.4 systems.</dd> - <dt><a href="perf-dec.html">Performance Notes (Digital - UNIX)</a></dt> - - <dd>Extracts of USENET postings describing how to optimize - Apache performance on Digital UNIX systems.</dd> - - <dt><a href="perf-hp.html">Performance Notes (HPUX)</a></dt> - - <dd>Email from an HP engineer on how to optimize HP-UX - 10.20.</dd> - <dt><a href="perf.html">Performance Notes (General)</a></dt> <dd>Some generic notes about how to improve the performance diff --git a/usr.sbin/httpd/htdocs/manual/misc/perf-dec.html b/usr.sbin/httpd/htdocs/manual/misc/perf-dec.html deleted file mode 100644 index b11b6e680ee..00000000000 --- a/usr.sbin/httpd/htdocs/manual/misc/perf-dec.html +++ /dev/null @@ -1,297 +0,0 @@ -<!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>Performance Tuning Tips for Digital Unix</title> - </head> - <!-- Background white, links blue (unvisited), navy (visited), red (active) --> - - <body bgcolor="#FFFFFF" text="#000000" link="#0000FF" - vlink="#000080" alink="#FF0000"> - <div align="CENTER"> - <img src="../images/sub.gif" alt="[APACHE DOCUMENTATION]" /> - - <h3>Apache HTTP Server Version 1.3</h3> - </div> - - - <h1 align="CENTER">Performance Tuning Tips for Digital - Unix</h1> - Below is a set of newsgroup posts made by an engineer from DEC - in response to queries about how to modify DEC's Digital Unix - OS for more heavily loaded web sites. Copied with permission. - <hr /> - - <h2>Update</h2> - From: Jeffrey Mogul <mogul@pa.dec.com><br /> - Date: Fri, 28 Jun 96 16:07:56 MDT<br /> - - - <ol> - <li>The advice given in the README file regarding the - "tcbhashsize" variable is incorrect. The largest value this - should be set to is 1024. Setting it any higher will have the - perverse result of disabling the hashing mechanism.</li> - - <li> - Patch ID OSF350-146 has been superseded by - - <blockquote> - Patch ID OSF350-195 for V3.2C<br /> - Patch ID OSF360-350195 for V3.2D - </blockquote> - Patch IDs for V3.2E and V3.2F should be available soon. - There is no known reason why the Patch ID OSF360-350195 - won't work on these releases, but such use is not - officially supported by Digital. This patch kit will not be - needed for V3.2G when it is released. - </li> - </ol> - <hr /> -<pre> -From mogul@pa.dec.com (Jeffrey Mogul) -Organization DEC Western Research -Date 30 May 1996 00:50:25 GMT -Newsgroups <a -href="news:comp.unix.osf.osf1">comp.unix.osf.osf1</a> -Message-ID <4oirch$bc8@usenet.pa.dec.com> -Subject Re: Web Site Performance -References 1 - - - -In article <skoogDs54BH.9pF@netcom.com> skoog@netcom.com (Jim Skoog) writes: ->Where are the performance bottlenecks for Alpha AXP running the ->Netscape Commerce Server 1.12 with high volume internet traffic? ->We are evaluating network performance for a variety of Alpha AXP ->runing DEC UNIX 3.2C, which run DEC's seal firewall and behind ->that Alpha 1000 and 2100 webservers. - -Our experience (running such Web servers as <a -href="http://altavista.digital.com">altavista.digital.com</a> -and <a -href="http://www.digital.com">www.digital.com</a>) is that there is one important kernel tuning -knob to adjust in order to get good performance on V3.2C. You -need to patch the kernel global variable "somaxconn" (use dbx -k -to do this) from its default value of 8 to something much larger. - -How much larger? Well, no larger than 32767 (decimal). And -probably no less than about 2048, if you have a really high volume -(millions of hits per day), like AltaVista does. - -This change allows the system to maintain more than 8 TCP -connections in the SYN_RCVD state for the HTTP server. (You -can use "netstat -An |grep SYN_RCVD" to see how many such -connections exist at any given instant). - -If you don't make this change, you might find that as the load gets -high, some connection attempts take a very long time. And if a lot -of your clients disconnect from the Internet during the process of -TCP connection establishment (this happens a lot with dialup -users), these "embryonic" connections might tie up your somaxconn -quota of SYN_RCVD-state connections. Until the kernel times out -these embryonic connections, no other connections will be accepted, -and it will appear as if the server has died. - -The default value for somaxconn in Digital UNIX V4.0 will be quite -a bit larger than it has been in previous versions (we inherited -this default from 4.3BSD). - -Digital UNIX V4.0 includes some other performance-related changes -that significantly improve its maximum HTTP connection rate. However, -we've been using V3.2C systems to front-end for altavista.digital.com -with no obvious performance bottlenecks at the millions-of-hits-per-day -level. - -We have some Webstone performance results available at - http://www.digital.com/info/alphaserver/news/webff.html - -<em>[The document referenced above is no longer at that URL -- Ed.]</em> - -I'm not sure if these were done using V4.0 or an earlier version -of Digital UNIX, although I suspect they were done using a test -version of V4.0. - --Jeff - ----------------------------------------------------------------------------- - -From mogul@pa.dec.com (Jeffrey Mogul) -Organization DEC Western Research -Date 31 May 1996 21:01:01 GMT -Newsgroups <a -href="news:comp.unix.osf.osf1">comp.unix.osf.osf1</a> -Message-ID <4onmmd$mmd@usenet.pa.dec.com> -Subject Digital UNIX V3.2C Internet tuning patch info - ----------------------------------------------------------------------------- - -Something that probably few people are aware of is that Digital -has a patch kit available for Digital UNIX V3.2C that may improve -Internet performance, especially for busy web servers. - -This patch kit is one way to increase the value of somaxconn, -which I discussed in a message here a day or two ago. - -I've included in this message the revised README file for this -patch kit below. Note that the original README file in the patch -kit itself may be an earlier version; I'm told that the version -below is the right one. - -Sorry, this patch kit is NOT available for other versions of Digital -UNIX. Most (but not quite all) of these changes also made it into V4.0, -so the description of the various tuning parameters in this README -file might be useful to people running V4.0 systems. - -This patch kit does not appear to be available (yet?) from - <a -href="http://www.service.digital.com/html/patch_service.html">http://www.service.digital.com/html/patch_service.html</a> -so I guess you'll have to call Digital's Customer Support to get it. - --Jeff - -DESCRIPTION: Digital UNIX Network tuning patch - - Patch ID: OSF350-146 - - SUPERSEDED PATCHES: OSF350-151, OSF350-158 - - This set of files improves the performance of the network - subsystem on a system being used as a web server. There are - additional tunable parameters included here, to be used - cautiously by an informed system administrator. - -TUNING - - To tune the web server, the number of simultaneous socket - connection requests are limited by: - - somaxconn Sets the maximum number of pending requests - allowed to wait on a listening socket. The - default value in Digital UNIX V3.2 is 8. - This patch kit increases the default to 1024, - which matches the value in Digital UNIX V4.0. - - sominconn Sets the minimum number of pending connections - allowed on a listening socket. When a user - process calls listen with a backlog less - than sominconn, the backlog will be set to - sominconn. sominconn overrides somaxconn. - The default value is 1. - - The effectiveness of tuning these parameters can be monitored by - the sobacklog variables available in the kernel: - - sobacklog_hiwat Tracks the maximum pending requests to any - socket. The initial value is 0. - - sobacklog_drops Tracks the number of drops exceeding the - socket set backlog limit. The initial - value is 0. - - somaxconn_drops Tracks the number of drops exceeding the - somaxconn limit. When sominconn is larger - than somaxconn, tracks the number of drops - exceeding sominconn. The initial value is 0. - - TCP timer parameters also affect performance. Tuning the following - require some knowledge of the characteristics of the network. - - tcp_msl Sets the tcp maximum segment lifetime. - This is the maximum lifetime in half - seconds that a packet can be in transit - on the network. This value, when doubled, - is the length of time a connection remains - in the TIME_WAIT state after a incoming - close request is processed. The unit is - specified in 1/2 seconds, the initial - value is 60. - - tcp_rexmit_interval_min - Sets the minimum TCP retransmit interval. - For some WAN networks the default value may - be too short, causing unnecessary duplicate - packets to be sent. The unit is specified - in 1/2 seconds, the initial value is 1. - - tcp_keepinit This is the amount of time a partially - established connection will sit on the listen - queue before timing out (<em>e.g.</em>, if a client - sends a SYN but never answers our SYN/ACK). - Partially established connections tie up slots - on the listen queue. If the queue starts to - fill with connections in SYN_RCVD state, - tcp_keepinit can be decreased to make those - partial connects time out sooner. This should - be used with caution, since there might be - legitimate clients that are taking a while - to respond to SYN/ACK. The unit is specified - in 1/2 seconds, the default value is 150 - (ie. 75 seconds). - - The hashlist size for the TCP inpcb lookup table is regulated by: - - tcbhashsize The number of hash buckets used for the - TCP connection table used in the kernel. - The initial value is 32. For best results, - should be specified as a power of 2. For - busy Web servers, set this to 2048 or more. - - The hashlist size for the interface alias table is regulated by: - - inifaddr_hsize The number of hash buckets used for the - interface alias table used in the kernel. - The initial value is 32. For best results, - should be specified as a power of 2. - - ipport_userreserved The maximum number of concurrent non-reserved, - dynamically allocated ports. Default range - is 1025-5000. The maximum value is 65535. - This limits the numer of times you can - simultaneously telnet or ftp out to connect - to other systems. - - tcpnodelack Don't delay acknowledging TCP data; this - can sometimes improve performance of locally - run CAD packages. Default is value is 0, - the enabled value is 1. - - Digital UNIX version: - - V3.2C -Feature V3.2C patch V4.0 -======= ===== ===== ==== -somaxconn X X X -sominconn - X X -sobacklog_hiwat - X - -sobacklog_drops - X - -somaxconn_drops - X - -tcpnodelack X X X -tcp_keepidle X X X -tcp_keepintvl X X X -tcp_keepcnt - X X -tcp_keepinit - X X -TCP keepalive per-socket - - X -tcp_msl - X - -tcp_rexmit_interval_min - X - -TCP inpcb hashing - X X -tcbhashsize - X X -interface alias hashing - X X -inifaddr_hsize - X X -ipport_userreserved - X - -sysconfig -q inet - - X -sysconfig -q socket - - X - -</pre> - <hr /> - - <h3 align="CENTER">Apache HTTP Server Version 1.3</h3> - <a href="./"><img src="../images/index.gif" alt="Index" /></a> - <a href="../"><img src="../images/home.gif" alt="Home" /></a> - - </body> -</html> - diff --git a/usr.sbin/httpd/htdocs/manual/misc/perf-hp.html b/usr.sbin/httpd/htdocs/manual/misc/perf-hp.html deleted file mode 100644 index 8a2fb5cebec..00000000000 --- a/usr.sbin/httpd/htdocs/manual/misc/perf-hp.html +++ /dev/null @@ -1,107 +0,0 @@ -<!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>Running a High-Performance Web Server on HPUX</title> - </head> - <!-- Background white, links blue (unvisited), navy (visited), red (active) --> - - <body bgcolor="#ffffff" text="#000000" link="#0000ff" - vlink="#000080" alink="#ff0000"> - <a id="initial" name="initial"> </a> - <div align="CENTER"> - <img src="../images/sub.gif" alt="[APACHE DOCUMENTATION]" /> - - <h3>Apache HTTP Server Version 1.3</h3> - </div> - - - - <h1 align="center">Running a High-Performance Web Server for - HPUX</h1> -<pre> -Date: Wed, 05 Nov 1997 16:59:34 -0800 -From: Rick Jones <<a -href="mailto:raj@cup.hp.com">raj@cup.hp.com</a>> -Reply-To: raj@cup.hp.com -Organization: Network Performance -Subject: HP-UX tuning tips -</pre> - Here are some tuning tips for HP-UX to add to the tuning page. - - <p>For HP-UX 9.X: Upgrade to 10.20<br /> - For HP-UX 10.[00|01|10]: Upgrade to 10.20</p> - - <p>For HP-UX 10.20:</p> - - <p>Install the latest cumulative ARPA Transport Patch. This - will allow you to configure the size of the TCP connection - lookup hash table. The default is 256 buckets and must be set - to a power of two. This is accomplished with adb against the - *disc* image of the kernel. The variable name is tcp_hash_size. - Notice that it's critically important that you use "W" to write - a 32 bit quantity, not "w" to write a 16 bit value when - patching the disc image because the tcp_hash_size variable is a - 32 bit quantity.</p> - - <p>How to pick the value? Examine the output of <a - href="ftp://ftp.cup.hp.com/dist/networking/tools/connhist">ftp://ftp.cup.hp.com/dist/networking/tools/connhist</a> - and see how many total TCP connections exist on the system. You - probably want that number divided by the hash table size to be - reasonably small, say less than 10. Folks can look at HP's - SPECweb96 disclosures for some common settings. These can be - found at <a - href="http://www.specbench.org/">http://www.specbench.org/</a>. - If an HP-UX system was performing at 1000 SPECweb96 connections - per second, the TIME_WAIT time of 60 seconds would mean 60,000 - TCP "connections" being tracked.</p> - - <p>Folks can check their listen queue depths with <a - href="ftp://ftp.cup.hp.com/dist/networking/misc/listenq">ftp://ftp.cup.hp.com/dist/networking/misc/listenq</a>.</p> - - <p>If folks are running Apache on a PA-8000 based system, they - should consider "chatr'ing" the Apache executable to have a - large page size. This would be "chatr +pi L <BINARY>." - The GID of the running executable must have MLOCK privileges. - Setprivgrp(1m) should be consulted for assigning MLOCK. The - change can be validated by running Glance and examining the - memory regions of the server(s) to make sure that they show a - non-trivial fraction of the text segment being locked.</p> - - <p>If folks are running Apache on MP systems, they might - consider writing a small program that uses mpctl() to bind - processes to processors. A simple pid % numcpu algorithm is - probably sufficient. This might even go into the source - code.</p> - - <p>If folks are concerned about the number of FIN_WAIT_2 - connections, they can use nettune to shrink the value of - tcp_keepstart. However, they should be careful there - - certainly do not make it less than oh two to four minutes. If - tcp_hash_size has been set well, it is probably OK to let the - FIN_WAIT_2's take longer to timeout (perhaps even the default - two hours) - they will not on average have a big impact on - performance.</p> - - <p>There are other things that could go into the code base, but - that might be left for another email. Feel free to drop me a - message if you or others are interested.</p> - - <p>sincerely,</p> - - <p>rick jones<br /> - <a - href="http://www.cup.hp.com/netperf/NetperfPage.html">http://www.cup.hp.com/netperf/NetperfPage.html</a> - <hr /> - - <h3 align="CENTER">Apache HTTP Server Version 1.3</h3> - <a href="./"><img src="../images/index.gif" alt="Index" /></a> - <a href="../"><img src="../images/home.gif" alt="Home" /></a> - - </p> - </body> -</html> - |