From: Rich Bowen This Multi-Processing Module (MPM) implements a non-threaded,
- pre-forking web server that handles requests in a manner similar
- to Apache 1.3. It is appropriate for sites that need to avoid
+ pre-forking web server. Each server process may answer incoming
+ requests, and a parent process manages the size of the server pool.
+ It is appropriate for sites that need to avoid
threading for compatibility with non-thread-safe libraries. It
is also the best MPM for isolating each request, so that a problem
with a single request will not affect any other. A single control process is responsible for launching child
processes which listen for connections and serve them when they
- arrive. Apache always tries to maintain several spare
+ arrive. Apache httpd always tries to maintain several spare
or idle server processes, which stand ready to serve incoming
requests. In this way, clients do not need to wait for a new
child processes to be forked before their requests can be
@@ -90,7 +91,7 @@ uses
While the parent process is usually started as Tuning of this parameter should only be necessary on very
busy sites. Setting this parameter to a large number is almost
always a bad idea. If you are trying to set the value equal to or lower than
- This Multi-Processing Module (MPM) implements a non-threaded,
- pre-forking web server that handles requests in a manner similar
- to Apache 1.3. It is appropriate for sites that need to avoid
+ pre-forking web server. Each server process may answer incoming
+ requests, and a parent process manages the size of the server pool.
+ It is appropriate for sites that need to avoid
threading for compatibility with non-thread-safe libraries. It
is also the best MPM for isolating each request, so that a problem
with a single request will not affect any other.Summary
How it WorksSee also
-
@@ -79,7 +80,7 @@ uses
How it Works
MaxSpareServers, and
MaxClients regulate how
the parent process creates children to serve requests. In general,
- Apache is very self-regulating, so most sites do not need to
+ Apache httpd is very self-regulating, so most sites do not need to
adjust these directives from their default values. Sites which
need to serve more than 256 simultaneous requests may need to
increase MaxClients,
@@ -101,8 +102,8 @@ uses
root
under Unix in order to bind to port 80, the child processes are
- launched by Apache as a less-privileged user. The User and Group directives are used to set
- the privileges of the Apache child processes. The child processes
+ launched by Apache httpd as a less-privileged user. The User and Group directives are used to set
+ the privileges of the Apache httpd child processes. The child processes
must be able to read all the content that will be served, but
should have as few privileges beyond that as possible.MinSpareServers, Apache
+ MinSpareServers, Apache HTTP Server
will automatically adjust it to MinSpareServers + 1.See also
diff --git a/docs/manual/mod/prefork.xml b/docs/manual/mod/prefork.xml
index 5ff3464582a..4ffa4d5d73e 100644
--- a/docs/manual/mod/prefork.xml
+++ b/docs/manual/mod/prefork.xml
@@ -30,8 +30,9 @@
A single control process is responsible for launching child processes which listen for connections and serve them when they - arrive. Apache always tries to maintain several spare + arrive. Apache httpd always tries to maintain several spare or idle server processes, which stand ready to serve incoming requests. In this way, clients do not need to wait for a new child processes to be forked before their requests can be @@ -60,7 +61,7 @@ uses
While the parent process is usually started as root
under Unix in order to bind to port 80, the child processes are
- launched by Apache as a less-privileged user. The
Tuning of this parameter should only be necessary on very
busy sites. Setting this parameter to a large number is almost
always a bad idea. If you are trying to set the value equal to or lower than
- + 1.