Hi Alan,

Thanks a lot for your response. 

May I know the patch link to apply for Radius version 2.2.1.? 

if I download latest stable version and rebuild the server (using our customized rlm module) then would that not required to apply patch?

May I know latest stable version of FreeRadius (3.0.5 or 2.2.6) and the bug free ?



On Fri, Nov 21, 2014 at 11:36 PM, Alan DeKok <aland@deployingradius.com> wrote:
srithar jeevadurai wrote:
> We are using Radius 2.2.1. Can we fix the child hung by putting any patch ?

  If you're going to patch it yourself, you'll need to look at github.
Or, download the link I sent and use that.

> For my understanding of Radius server behavior
>
> May I know the possible root causes for "Child is hung" ?

  A bug.  The root causes are buried inside of the server.  Since you're
not familiar with the server code, any explanation won't help.

> In our scenario, I believe that when backlog is growing, some point of
> time each request faces "max_request_time" - out so it is giving child
> is hung message i.e. the request is in queue but no worker thread has
> picked it.

  No.

> May I know why we will not be able to solve and it will delays the
> problem please?

  If the problem is that the home server is down, increasing the
internal queue size won't help.  The home server will still be down.

  Alan DeKok.
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--
Regards,
Srithar Durairaj
Alternate Mail I.D: srijeevadurai1@yahoo.co.in
Mobile: +919886251852