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<p><tt><tt>Hi, Agalya!<br>
</tt></tt></p>
<p><tt>1) <tt>Regarding connection <tt>r<tt>eus</tt></tt><tt>e<tt>
optimization,<tt> <tt>I haven<tt>'t done any research on
this topic. <tt>In other words, libc<tt>url <tt>will
be managing <tt>its connections through <tt><tt>its</tt>
default settings<tt> / parameters,
whichever they are. <tt>The module <tt>is
mature enough, maybe now is</tt></tt>
a good time to <tt>look<tt> into this<tt>
<tt>feature.</tt><tt></tt></tt></tt></tt><br>
</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></p>
<p><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>2) <tt>Since
you're <tt>doing lots of obviously
</tt><tt>blocking operations (HTTP
transfers), then <tt>you will
definitely need more process<tt>es</tt></tt><tt><tt><tt></tt></tt>.
However<tt>, <tt><tt>I noticed
lots of transfers are <tt>quickly
completed, <tt>without<tt>
<tt>requir<tt>ing
async<tt>, so
you don't want
too many
processes if
all requ<tt>ests
<tt>work</tt><tt></tt>
like that</tt>.
Just <tt>t</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><tt>une
according to your needs until
you find a sweet spot<tt>. You
could even share the perf<tt>ormance
results, I'd love to hear
some feedback.</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></p>
<pre class="moz-signature" cols="72">Liviu Chircu
OpenSIPS Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 19.09.2016 17:57, Ramachandran,
Agalya (Contractor) wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span style="color:blue">Hi team/Liviu, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:blue">Couple of
questions for clarification.
<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="color:blue"><span style="mso-list:Ignore">1)<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span
style="color:blue">I see for every HTTP request(for both
sync and async), TCP ports are being opened and closed.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:blue"> Are
we not using same port and pooling the request in a
particular port if we are hitting simultaneous requests?
<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="color:blue"><span style="mso-list:Ignore">2)<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span
style="color:blue">Children parameter in the config file - I
understand the use case of this is to spawn multiple
threads.
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="color:blue">If we want to handle more load in
OpenSIPS, we should increase this number correct?
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="color:blue">So when increasing this number of
children process we should take care of CPU utilization and
according to the no of CPU and RAM we used in our Linux
system.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:blue">Correct me if am
wrong in my understanding of the above questions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:blue">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:blue">Agalya<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:blue"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> Liviu Chircu
[<a class="moz-txt-link-freetext" href="mailto:liviu@opensips.org">mailto:liviu@opensips.org</a>]
<br>
<b>Sent:</b> Thursday, September 15, 2016 3:53 AM<br>
<b>To:</b> Ramachandran, Agalya (Contractor)
<a class="moz-txt-link-rfc2396E" href="mailto:Agalya_Ramachandran@comcast.com"><Agalya_Ramachandran@comcast.com></a>; OpenSIPS users
mailling list <a class="moz-txt-link-rfc2396E" href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
<b>Subject:</b> Re: FW:[OpenSIPS-Users] Asynchronous
operation for REST queries<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<pre>On 14.09.2016 21:33, Ramachandran, Agalya (Contractor) wrote:<o:p></o:p></pre>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="color:#1F497D">Are you going
to add one more parameter “connect_polling_interval” and
what will be use case of it?
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Is it
replacement for 10% wait time logic?</span><o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif">Yes.<br>
<br>
<o:p></o:p></span></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Also, I
observed in the case of async call, it takes ~90 to 100ms
to open the port itself. Is this expected behavior?</span><o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif">Yes.<br>
<br>
<br>
<o:p></o:p></span></p>
<pre>Liviu Chircu<o:p></o:p></pre>
<pre>OpenSIPS Developer<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
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