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From Jean-Christophe Roux <>
Subject [users@httpd] Requests taking a lot of time
Date Wed, 02 Jan 2008 16:59:21 GMT

I am struggling with an issue and I have the following set up that reproduces the problem.
I am running apache 2.2 on Centos 5.0. 
On the client side, I have a web page that polls the server every second. Using prototypejs,
it looks like that:
setInterval('polling();', 1000);  
function polling()
  new Ajax.Request
  ( 'polling_server.php', 
    { onSuccess: function(transport)

the polling_server.php does nothing:
<?php ?>
Most queries takes around 100-150 ms for a round trip (measured using firebug)
Sooner or later though, one of those requests will take a lof of time and will timeout after
Also, there are sequences of requests that  take a lot of time (5, 10 seconds sometimes more)
and then the system gets back to the normal 100ms.
it looks like a jam. I'd like to understand why this is happening so that I can fix it. How
could I explore the issue further?
Where does the 74000ms come from? Is it something I can change in apache? 


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