01-13-2009
Apache 2.2 on Ubuntu 8.10
Hello,
Does anyone know or know how to check if the Apache 2.2 version you can get with the Synaptic Package manager in Ubuntu 8.10has been optimized for 486 or higher processors?
I would think one would have to optimize the executable for 486 or higher processer baed on the Apache optimization guide below. I am a little new to Apache so I do not know if I have to do what they say below since I run on a processor greater than a 496(it is a little confuzing). Any advice?
Atomic Operations
Some modules, such as mod_cache and recent development builds of the worker MPM, use APR's atomic API. This API provides atomic operations that can be used for lightweight thread synchronization.
By default, APR implements these operations using the most efficient mechanism available on each target OS/CPU platform. Many modern CPUs, for example, have an instruction that does an atomic compare-and-swap (CAS) operation in hardware. On some platforms, however, APR defaults to a slower, mutex-based implementation of the atomic API in order to ensure compatibility with older CPU models that lack such instructions. If you are building Apache for one of these platforms, and you plan to run only on newer CPUs, you can select a faster atomic implementation at build time by configuring Apache with the --enable-nonportable-atomics option:
./buildconf
./configure --with-mpm=worker --enable-nonportable-atomics=yes
The --enable-nonportable-atomics option is relevant for the following platforms:
* Solaris on SPARC
By default, APR uses mutex-based atomics on Solaris/SPARC. If you configure with --enable-nonportable-atomics, however, APR generates code that uses a SPARC v8plus opcode for fast hardware compare-and-swap. If you configure Apache with this option, the atomic operations will be more efficient (allowing for lower CPU utilization and higher concurrency), but the resulting executable will run only on UltraSPARC chips.
* Linux on x86
By default, APR uses mutex-based atomics on Linux. If you configure with --enable-nonportable-atomics, however, APR generates code that uses a 486 opcode for fast hardware compare-and-swap. This will result in more efficient atomic operations, but the resulting executable will run only on 486 and later chips (and not on 386).
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LEARN ABOUT DEBIAN
runapp::apache
RunApp::Apache(3pm) User Contributed Perl Documentation RunApp::Apache(3pm)
NAME
RunApp::Apache - Apache control for RunApp
SYNOPSIS
use RunApp::Apache;
$apache = RunApp::Apache->new
(root => "/tmp/apache_run",
report => 1,
apxs => '/usr/local/sbin/apxs',
# httpd => '/usr/local/sbin/httpd',
required_modules => ["log_config", "alias", "perl", "mime"],
config_block => q{
[% IF AP_VERSION == 2 %]
eval { use Apache2 };
eval { use Apache::compat };
[% END %]
<Location /myapp>
AllowOverride None
SetHandler perl-script
PerlSetVar approot [% cwd %]
PerlHandler MyApp
Options +ExecCGI
</Location>
});
DESCRIPTION
This is the class for defining a apache web server to be used in RunApp.
CONSTRUCTOR
new (%arg)
Required arg:
root
The root for the apache instance.
apxs
httpd
If "apxs" is specified, "httpd" will be derived from it.
required_modules
A arrayref to the apache modules required.
config_block
The config block that will be the extra block in the template used by RunApp::Template::Apache.
CTL The class for handling apachectl. The default is RunApp::Control::AppControl. You can also use RunApp::Control::ApacheCtl.
CONF
The class for handling apache config. The default is RunApp::Template::Apache. It is used in the "build" phase of RunApp
SEE ALSO
RunApp, RunApp::Control::Apache, RunApp::Template::Apache, App::Control
AUTHORS
Chia-liang Kao <clkao@clkao.org>
Refactored from works by Leon Brocard <acme@astray.com> and Tom Insam <tinsam@fotango.com>.
COPYRIGHT
Copyright (C) 2002-5, Fotango Ltd.
This module is free software; you can redistribute it or modify it under the same terms as Perl itself.
perl v5.8.8 2008-01-09 RunApp::Apache(3pm)