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From Niklas Edmundsson <>
Subject event mpm and mod_status
Date Sun, 16 Dec 2012 16:25:11 GMT

Hi all.

I'm playing around with the event mpm in httpd 2.4.3, and I've come to 
the conclusion that the stats reported by mod_status is rather 
strange. I'm not sure if it's a bug or simply not implemented...

My test case is just a simple file transfer of a DVD image, no 
mod_cache etc. involved.

I then, naively perhaps, expect that I should se this file transfer on 
/server-status, but I see little to no trace of it.

I would at least expect it to consistently show up as writing 
somewhere, but "writing" under "Async connections" mostly shows 0.

Another interesting thing is that the client ip shows up all over the 
place in the server/thread list, but without any info on what the 
client is doing. I'm guessing that this is the async processing going 
on, but the status shown on /server-status is just plain confusing.

Am I missing something?

Sure, I can look in the server logs to find out what files have been 
sent, but that's not quite the same as the "what is happening right 
now" I'm used to /server-status presenting to me.

Is it possible to patch mod_status to show something useful for the 
event mpm too, or is the information needed not available? For 
example, I would expect to find a list of all the current requests 
being processed somehow. As it currently stands it seems that all 
replies currently being sent in async mode is a "black hole" on 

  Niklas Edmundsson, Admin @ {acc,hpc2n}      |
  OH NO, my wife burned the rice crispies--AGAIN!!

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