Hello dE,
I can only give you my own interpretation of this document.
First of all the Mutex directive in Apache httpd 2.4.x replaces several
different directives from Apache httpd 2.2.x.
The SVN commit for this is 883540.
- http://svn.apache.org/viewvc?view=revision&revision=883540
The phrase "the first argument" in both cases probably means the first
argument after the mechanism.
The doc should be worded more clearly. (So this should probably changed
to "the second argument".)
The mechanism is what kind of mutex technology is used.
Apache httpd uses several different mutexes for different purposes.
The mutex-name specifies which of these mutexes the Mutex directive
applies to.
It is a little confusing that either one of these arguments can have the
value "default".
So the phrase "The following mutex /mechanisms/ are available:" applies
to the mechanism (argument 1).
And the phrase "The following table documents" applies to the mutex-name
(argument 2).
I hope this helps.
Thanks,
Mike Rumph
On 9/2/2014 10:10 PM, dE wrote:
Hi.
I was reading this --
http://httpd.apache.org/docs/trunk/mod/core.html#mutex
Quoting what's written here --
Specify |default| as the first argument to change the settings for
all mutexes
As we know mutex is a mechanism; it appears Apache has settings for
each mutex it implements.
specify a mutex name (see table below) as the first argument to
override defaults only for that mutex.
So the table starting with 'The following table documents....' lists
all the mechanisms. But before the table there exists a list with the
heading 'The following mutex mechanisms are available:'.
So I don't understand which one of these is the mutex mechanism.
Also the statement --
specify a mutex name (see table below) as the first argument to
override defaults only for that mutex.
Contradicts the examples --
Mutex sysvsem default
Mutex fcntl:/var/httpd/locks mpm-accept
Where the entries in the table are not the first argument, instead the
list starting with 'The following mutex mechanisms are available:' is.
Thanks for any clarification.
