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Subject cvs commit: httpd-2.0/docs/manual/misc perf-tuning.html
Date Sun, 02 Jun 2002 05:29:14 GMT
brianp      2002/06/01 22:29:14

  Modified:    docs/manual/misc perf-tuning.html
  Updated the introduction to reflect 2.0
  Revision  Changes    Path
  1.34      +18 -33    httpd-2.0/docs/manual/misc/perf-tuning.html
  Index: perf-tuning.html
  RCS file: /home/cvs/httpd-2.0/docs/manual/misc/perf-tuning.html,v
  retrieving revision 1.33
  retrieving revision 1.34
  diff -u -r1.33 -r1.34
  --- perf-tuning.html	2 Jun 2002 04:35:56 -0000	1.33
  +++ perf-tuning.html	2 Jun 2002 05:29:14 -0000	1.34
  @@ -85,38 +85,23 @@
       <h3><a id="introduction"
  -    <p>Apache is a general webserver, which is designed to be
  -    correct first, and fast second. Even so, its performance is
  -    quite satisfactory. Most sites have less than 10Mbits of
  -    outgoing bandwidth, which Apache can fill using only a low end
  -    Pentium-based webserver. In practice sites with more bandwidth
  -    require more than one machine to fill the bandwidth due to
  -    other constraints (such as CGI or database transaction
  -    overhead). For these reasons the development focus has been
  -    mostly on correctness and configurability.</p>
  -    <p>Unfortunately many folks overlook these facts and cite raw
  -    performance numbers as if they are some indication of the
  -    quality of a web server product. There is a bare minimum
  -    performance that is acceptable, beyond that extra speed only
  -    caters to a much smaller segment of the market. But in order to
  -    avoid this hurdle to the acceptance of Apache in some markets,
  -    effort was put into Apache 1.3 to bring performance up to a
  -    point where the difference with other high-end webservers is
  -    minimal.</p>
  -    <p>Finally there are the folks who just plain want to see how
  -    fast something can go. The author falls into this category. The
  -    rest of this document is dedicated to these folks who want to
  -    squeeze every last bit of performance out of Apache's current
  -    model, and want to understand why it does some things which
  -    slow it down.</p>
  -    <p>Note that this is tailored towards Apache 1.3 on Unix. Some
  -    of it applies to Apache on NT. Apache on NT has not been tuned
  -    for performance yet; in fact it probably performs very poorly
  -    because NT performance requires a different programming
  -    model.</p>
  +    <p>Apache 2.0 is a general-purpose webserver, designed to
  +    provide a balance of flexibility, portability, and performance.
  +    Although it has not been designed specifically to set benchmark
  +    records, Apache 2.0 is capable of high performance in many
  +    real-world situations.</p>
  +    <p>Compared to Apache 1.3, release 2.0 contains many additional
  +    optimizations to increase throughput and scalability.  Most of
  +    these improvements are enabled by default.  However, there are
  +    compile-time and run-time configuration choices that can
  +    significantly affect performance.  This document describes the
  +    options that a server administrator can configure to tune the
  +    performance of an Apache 2.0 installation.  Some of these
  +    configuration options enable the httpd to better take advantage
  +    of the capabilities of the hardware and OS, while others allow
  +    the administrator to trade functionality for speed.</p>
       <hr />
       <h3><a id="hardware" name="hardware">Hardware and Operating
  @@ -142,7 +127,7 @@
         <li>Run the latest stable release and patchlevel of the
         operating system that you choose.  Many OS suppliers have
  -      introduced significant performance improvements their
  +      introduced significant performance improvements to their
         TCP stacks and thread libraries in recent years.</li>
         <li>If your OS supports a sendfile(2) system call, make
         sure you install the release and/or patches needed to

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