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    <div class="moz-cite-prefix">On 06/05/2013 07:36 PM, Michael Jerris
      wrote:<br>
    </div>
    <blockquote
      cite="mid:CABAA376-C6C1-4452-8399-5669E248FD51@jerris.com"
      type="cite">
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      Is the request going to your server and getting no response?
      <div><br>
        <div>
          <div>On Jun 5, 2013, at 9:50 AM, Muhammad Shahzad &lt;<a
              moz-do-not-send="true" href="mailto:shaheryarkh@gmail.com">shaheryarkh@gmail.com</a>&gt;
            wrote:</div>
          <br class="Apple-interchange-newline">
          <blockquote type="cite">
            <div dir="ltr">Hi,
              <div><br>
              </div>
              <div>Is there any connection limit perhaps hard coded
                anywhere in xml_curl module? I am load testing FS with
                xml_curl to provide config, directory and dial-plan. I
                observed i start getting HTTP ERROR 0 when i have around
                1600 concurrent calls on machine with media. Although i
                see no sign of system overload either on FS (load
                average &lt; 1.8) or Apache (load average &lt; 4,75).
                Both have plenty of RAM and bandwidth free.</div>
              <div><br>
              </div>
              <div>Is there anyway to get rid of this HTTP ERROR 0? It
                must be generated by FS internally, since i don't see
                anything like this error in Apache logs.</div>
              <div><br>
              </div>
              <div>Below 1,638 concurrent calls @ 50 CPS, i get success
                rate of 99.999% but as soon as it crosses this mark,
                success rate drastically drops to 60% and even below
                (when concurrent calls go beyond 2,000). Here is error
                console log.<br clear="all">
                <div><br>
                </div>
                <div>###################################################</div>
                <div>
                  <div>2013-06-05 18:09:13.591229 [ERR]
                    mod_xml_curl.c:310 Received HTTP error 0 trying to
                    fetch <a moz-do-not-send="true"
                      href="http://172.16.171.61/vm-users.php">http://172.16.171.61/vm-users.php</a></div>
                  <div>data:
[hostname=vms01&amp;section=directory&amp;tag_name=domain&amp;key_name=name&amp;key_value=10.1.3.2&amp;Event-Name=GENERAL&amp;Core-UUID=84c917dc-cdde-11e2-9bb2-8b779d6a4e97&amp;FreeSWITCH-Hostname=vms01&amp;FreeSWITCH-Switchname=vms01&amp;FreeSWITCH-IPv4=10.1.3.2&amp;FreeSWITCH-IPv6=%3A%3A1&amp;Event-Date-Local=2013-06-05%2018%3A09%3A03&amp;Event-Date-GMT=Wed,%2005%20Jun%202013%2013%3A09%3A03%20GMT&amp;Event-Date-Timestamp=1370437743591210&amp;Event-Calling-File=mod_voicemail.c&amp;Event-Calling-Function=resolve_id&amp;Event-Calling-Line-Number=1350&amp;Event-Sequence=1776930&amp;action=message-count&amp;key=id&amp;user=989000049598&amp;domain=10.1.3.2]</div>
                </div>
                <div>###################################################<br>
                </div>
                <div><br>
                </div>
                <div style="">Although this setup is more then
                  sufficient for my requirement but i just want to know
                  if i can extend it beyond, since i still have lot of
                  resources free. <br>
                </div>
                <div style=""><br>
                </div>
                <div style="">OS: Debian 6.0.7 x64</div>
                <div style="">Apache: 2.2.16</div>
                <div style="">FreeSWITCH:&nbsp;1.5.1b+git~20130424T005233Z~66d1755b06</div>
                <div><br>
                </div>
                <div style="">Both FS and Apache are running on separate
                  dedicated machines on same LAN.</div>
                <div><br>
                </div>
                <div style="">Thank you.</div>
                <div><br>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
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</pre>
    </blockquote>
    <br>
    I think you need to do something with Apache configuration. Maybe
    increase apache child instance/Threads will give you better
    performance.&nbsp; <br>
    <pre class="moz-signature" cols="72">-- 
Thanks,
Sam</pre>
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