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Posted to dev@httpd.apache.org by Daniel Gruno <ru...@cord.dk> on 2012/03/28 19:34:09 UTC

http-mpm.conf.in versus docs and defaults

Being a new committer and, basically, just a documentation committer, I 
feel that I must bring this before the dev@ list before proceeding any 
further. There appears to be a mismatch between the mpm defaults in the 
configuration and the documentation surrounding it as well as the header 
definitions. An example is the worker and event mpm, where the 
configuration defines them so:

   StartServers             2
   MinSpareThreads         25
   MaxSpareThreads         75
   ThreadsPerChild         25
   MaxRequestWorkers      150

However, in both the documentation and the headers, these values can be 
read or calculated as:

   StartServers             3
   MinSpareThreads         75
   MaxSpareThreads        250
   ThreadsPerChild         25
   MaxRequestWorkers      400

 From what I can gather with my IRC chats with Igor Galic, this has been 
discussed quite a while back, and the consensus was to adopt these new 
values as default, but somehow it did not make it to the 
http-mpm.conf.in file.
I have been asked to change the values in the conf.in file, but I'm very 
unsure if it is merited, so I therefor ask you, oh great people of the 
dev@ list, to give me an answer as to whether these new values should be 
adopted or not. The current stance we have taken in discussions 
regarding these values is that there is a difference between default 
configuration value and the default values hard-coded into the server, 
but it can seem a bit silly to use that explanation at times.

With regards,
Daniel.

Re: http-mpm.conf.in versus docs and defaults

Posted by Rich Bowen <rb...@rcbowen.com>.
On Mar 28, 2012, at 1:34 PM, Daniel Gruno wrote:

> Being a new committer and, basically, just a documentation committer, I feel that I must bring this before the dev@ list before proceeding any further. There appears to be a mismatch between the mpm defaults in the configuration and the documentation surrounding it as well as the header definitions. An example is the worker and event mpm, where the configuration defines them so:
> 
>  StartServers             2
>  MinSpareThreads         25
>  MaxSpareThreads         75
>  ThreadsPerChild         25
>  MaxRequestWorkers      150
> 
> However, in both the documentation and the headers, these values can be read or calculated as:
> 
>  StartServers             3
>  MinSpareThreads         75
>  MaxSpareThreads        250
>  ThreadsPerChild         25
>  MaxRequestWorkers      400
> 
> From what I can gather with my IRC chats with Igor Galic, this has been discussed quite a while back, and the consensus was to adopt these new values as default, but somehow it did not make it to the http-mpm.conf.in file.
> I have been asked to change the values in the conf.in file, but I'm very unsure if it is merited, so I therefor ask you, oh great people of the dev@ list, to give me an answer as to whether these new values should be adopted or not. The current stance we have taken in discussions regarding these values is that there is a difference between default configuration value and the default values hard-coded into the server, but it can seem a bit silly to use that explanation at times.


My opinion on this is that the default shipped configuration file should match the in-code default values.

Some of the out-of-sync default config file values are historic, others are simply errors. In either case, they should be brought into sync with the built-in defaults.

So, yeah, do it.

--Rich (One voice among many)