Apache 2.2 on Ubuntu 8.10 Post: 302276249

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Operating Systems Linux Ubuntu Apache 2.2 on Ubuntu 8.10 Post 302276249 by mojoman on Tuesday 13th of January 2009 10:38:25 AM

01-13-2009

Registered User

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).

mojoman

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LEARN ABOUT DEBIAN

apr::request::hook

Hook(3pm)						User Contributed Perl Documentation						 Hook(3pm)

NAME

       APR::Request::Hook - wrapper for libapreq2's hook API.

SYNOPSIS

	 use APR::Request::Hook;

DESCRIPTION

       This manpage documents version 2.13 of the APR::Request::Hook package.

METHODS

       APR::Request::Hook

   disable_uploads
	   APR::Request::Hook->disable_uploads($pool)
	   APR::Request::Hook->disable_uploads($pool, $next)

       Hook which returns APREQ_ERROR_GENERAL if a file upload field is detected. $pool is an APR::Pool object; $next (if present) is the next
       APR::Request::Hook in the chain.

   apr_xml_parser
	   APR::Request::Hook->apr_xml_parser($pool)
	   APR::Request::Hook->apr_xml_parser($pool, $next)

       Xml parser hook.  $pool is an APR::Pool object; $next (if present) is the next APR::Request::Hook in the chain.

   discard_brigade
	   APR::Request::Hook->discard_brigade($pool)
	   APR::Request::Hook->discard_brigade($pool, $next)

       Hook which discards the brigade it receives from the parser.  $pool is an APR::Pool object; $next (if present) is the next
       APR::Request::Hook in the chain.

SEE ALSO

       APR::Request, APR::Request::Parser

COPYRIGHT

	 Licensed to the Apache Software Foundation (ASF) under one or more
	 contributor license agreements.  See the NOTICE file distributed with
	 this work for additional information regarding copyright ownership.
	 The ASF licenses this file to You under the Apache License, Version 2.0
	 (the "License"); you may not use this file except in compliance with
	 the License.  You may obtain a copy of the License at

	     http://www.apache.org/licenses/LICENSE-2.0

	 Unless required by applicable law or agreed to in writing, software
	 distributed under the License is distributed on an "AS IS" BASIS,
	 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	 See the License for the specific language governing permissions and
	 limitations under the License.

perl v5.10.1							    2011-02-28								 Hook(3pm)