Apache 2.2 on Ubuntu 8.10 Post: 302276637

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Operating Systems Linux Ubuntu Apache 2.2 on Ubuntu 8.10 Post 302276637 by mojoman on Wednesday 14th of January 2009 09:18:41 AM

01-14-2009

Registered User

Quote:

Originally Posted by otheus

Try "httpd -V". HTTPD 2.2.9 does not have the "atomics" compile-time option, so I cannot determine if this would work for you.

UPDATE: Oh oh. This seems to be a configuration bug of some sort AND the documentation is out of date. The configure code now (since long before 2.2.9) tests if the architecture being compiled for is greater than i486 and if so, it provides you with "generic" hardware atomics -- ie, pthread mutex locking. It looks like it should have used assembly atomics, but someone goofed and got it the other way around. SO unless your package is specifically for the "i386" architecture, it will have use the pthread calls, not the assembly calls. If you have the APR "libtool" installed (search your filesystem for apr-1/../libtool) check the file for what it sets "host" to. If it's not i386 or not x86_64, I'm pretty sure you're not using mutexes.

I'm going to see what Apache developers say about this.

I am a little new to UBUNTU. When using the synaptic package manager, are the packages pre-compiled? I ask since since you say the "arhictecture being compiled for is greater than 486". Does syaptic download the package, check for the architecture and the compile or as I ask above are they pre-compiled.

Last edited by otheus; 01-14-2009 at 10:46 AM..

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LEARN ABOUT CENTOS

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)