<div dir="ltr"><div class="gmail_quote"><div dir="ltr">Hi Team,<div><br></div><div><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">We need your help to fix our radius server error. I
kindly request you to help us on the same. </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">We are facing ‘Child is hung’ message in our radius
server and we have to restart radius server to become normal.</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">As per our analysis the error message comes whenever there are
more load on the server. </span></p>
<p class="MsoNormal"><br></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><b><u><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Configuration: </span></u></b></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">max_request_time = 30</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">cleanup_delay = 5</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><b>max_requests = 12800</b></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><b>max_queue_size = 131072</b></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">start_servers = 5</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">max_servers = 32</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">min_spare_servers = 3</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">max_spare_servers = 10</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">max_requests_per_server = 0</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Our system TPS is 100 (at max 120). Since we have kept
max_request as 12,800 and max_request_time as 30 seconds, we will be able to
support max backlog 3000 (TPS x max_request_time).</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">That is our system can clear first 3000 requests in the queue
before it faces ‘time expire’ (max_request_time). However we have set
max_request as 12,800 during high load, system is facing ‘child is hung’ when
the backlog grows more than 3000. </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Is our above understanding correct? If it is correct, we can
resolve our issue by setting max_request as 3000 i.e. during high load, we will
not face ‘child is hung ‘ and no need to restart radius server to become
normal.</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Looking forward for your reply.</span></p><span class="HOEnZb"><font color="#888888"><div><br></div><div><span style="color:rgb(34,34,34)">-- </span><br></div></font></span></div></div></div><div class="gmail_signature">Regards,<br>Srithar Durairaj<br>Alternate Mail I.D: <a href="mailto:srijeevadurai1@yahoo.co.in">srijeevadurai1@yahoo.co.in</a><br>Mobile: +919886251852<br><br><br></div>
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