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List: sr-users
Subject: Re: [SR-Users] TCP packet relay delayed (Kamailio 4.1.5)
From: Andrew Chen <achen () fuze ! com>
Date: 2018-04-24 18:01:54
Message-ID: CAEytwJ1KwxdzBeWG+BdDQj4aNzsTsYgjUithUaYhkt+ED1Fcdg () mail ! gmail ! com
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It's an existing connection. Our clients/servers sends many UPDATE/OPTION
to update the state of the meeting on both ends and sometimes these
messages don't get a response and affects user experience.
On Tue, Apr 24, 2018 at 10:51 AM, Daniel-Constantin Mierla <
miconda@gmail.com> wrote:
> Another aspect -- are the connections to be used for transmission already
> open? If it is a new connection, it can be also the fact that the other
> side is not accepting the new one very fast.
>
> Cheers,
> Daniel
>
> On 24.04.18 19:46, Andrew Chen wrote:
>
> Thanks Daniel.
>
> On Tue, Apr 24, 2018 at 10:45 AM, Daniel-Constantin Mierla <
> miconda@gmail.com> wrote:
>
> > Hello,
> >
> > you can see tcp write queued bytes with:
> >
> > kamctl rpc core.tcp_info
> >
> > If you have an older version, do kamcmd core.tcp_info
> >
> > It may be also the OS queues that are busy, if the other side is not not
> > reading fast, look at netstat output for Send-Queue in:
> >
> > netstat -altp
> >
> > Cheers,
> > Daniel
> >
> > On 22.04.18 18:47, Andrew Chen wrote:
> >
> > Hello,
> >
> > Can anyone provide any suggestions on how to log buffer usage?
> >
> > On Tue, Apr 17, 2018 at 7:46 PM, Andrew Chen <achen@fuze.com> wrote:
> >
> > > Thanks Alex for your response. I honestly forgot about these parameters
> > > and will play with them a bit.
> > >
> > > Is there anyway to log how much is written or stored in the buffer?
> > >
> > > On Tue, Apr 17, 2018 at 7:35 PM, Alex Balashov <
> > > abalashov@evaristesys.com> wrote:
> > >
> > > > Hello,
> > > >
> > > > Could it be that your send queue or other parameters regulating outgoing
> > > > flows are too low?
> > > >
> > > > Stuff like this:
> > > >
> > > > https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_conn_wq_max
> > > > https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_wq_max
> > > >
> > > > -- Alex
> > > >
> > > > On Tue, Apr 17, 2018 at 05:00:28PM -0700, Andrew Chen wrote:
> > > >
> > > > > Hi Kamailio community,
> > > > >
> > > > > I need your urgent help regarding a situation where the Kamailio TCP
> > > > packet
> > > > > delayed in relaying SIP packets. They delay between the time
> > > > Kamailio logs
> > > > > the relay to the time it left the system was ~20 seconds difference,
> > > > which
> > > > > is huge in SIP world.
> > > > >
> > > > > Any ideas, thoughts or suggestions on how I can narrow down to the
> > > > > problem? We have about 30 cases of this today
> > > > >
> > > > > Thanks in advance.
> > > > >
> > > > > --
> > > > > Andy Chen
> > > > > Sr. Telephony Lead Engineer
> > > > > achen@ <achen@thinkingphones.com>fuze.com
> > > > >
> > > > > --
> > > > > *Confidentiality Notice: The information contained in this e-mail and
> > > > any
> > > > >
> > > > > attachments may be confidential. If you are not an intended
> > > > recipient, you
> > > > >
> > > > > are hereby notified that any dissemination, distribution or copying
> > > > of this
> > > > >
> > > > > e-mail is strictly prohibited. If you have received this e-mail in
> > > > error,
> > > > >
> > > > > please notify the sender and permanently delete the e-mail and any
> > > > >
> > > > > attachments immediately. You should not retain, copy or use this
> > > > e-mail or
> > > > >
> > > > > any attachment for any purpose, nor disclose all or any part of the
> > > > >
> > > > > contents to any other person. Thank you.*
> > > >
> > > > > _______________________________________________
> > > > > Kamailio (SER) - Users Mailing List
> > > > > sr-users@lists.kamailio.org
> > > > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> > > >
> > > >
> > > > --
> > > > Alex Balashov | Principal | Evariste Systems LLC
> > > >
> > > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
> > > > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
> > > >
> > > > _______________________________________________
> > > > Kamailio (SER) - Users Mailing List
> > > > sr-users@lists.kamailio.org
> > > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> > > >
> > >
> > >
> > >
> > > --
> > > Andy Chen
> > > Sr. Telephony Lead Engineer
> > > 415 516 5535 (M)
> > > achen@ <achen@thinkingphones.com>fuze.com
> > >
> > >
> >
> >
> > --
> > Andy Chen
> > Sr. Telephony Lead Engineer
> > 415 516 5535 (M)
> > achen@ <achen@thinkingphones.com>fuze.com
> >
> >
> > *Confidentiality Notice: The information contained in this e-mail and any
> > attachments may be confidential. If you are not an intended recipient, you
> > are hereby notified that any dissemination, distribution or copying of
> > this
> > e-mail is strictly prohibited. If you have received this e-mail in error,
> > please notify the sender and permanently delete the e-mail and any
> > attachments immediately. You should not retain, copy or use this e-mail or
> > any attachment for any purpose, nor disclose all or any part of the
> > contents to any other person. Thank you.*
> >
> > _______________________________________________
> > Kamailio (SER) - Users Mailing \
> > Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> >
> >
> > --
> > Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda
> > Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
> >
> >
>
>
> --
> Andy Chen
> Sr. Telephony Lead Engineer
> 415 516 5535 (M)
> achen@ <achen@thinkingphones.com>fuze.com
>
>
> *Confidentiality Notice: The information contained in this e-mail and any
> attachments may be confidential. If you are not an intended recipient, you
> are hereby notified that any dissemination, distribution or copying of this
> e-mail is strictly prohibited. If you have received this e-mail in error,
> please notify the sender and permanently delete the e-mail and any
> attachments immediately. You should not retain, copy or use this e-mail or
> any attachment for any purpose, nor disclose all or any part of the
> contents to any other person. Thank you.*
>
>
> --
> Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
>
>
--
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen@thinkingphones.com>fuze.com
--
*Confidentiality Notice: The information contained in this e-mail and any
attachments may be confidential. If you are not an intended recipient, you
are hereby notified that any dissemination, distribution or copying of this
e-mail is strictly prohibited. If you have received this e-mail in error,
please notify the sender and permanently delete the e-mail and any
attachments immediately. You should not retain, copy or use this e-mail or
any attachment for any purpose, nor disclose all or any part of the
contents to any other person. Thank you.*
[Attachment #5 (text/html)]
<div dir="ltr">It's an existing connection. Our clients/servers sends many \
UPDATE/OPTION to update the state of the meeting on both ends and sometimes these \
messages don't get a response and affects user experience.</div><div \
class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 24, 2018 at 10:51 AM, \
Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" \
target="_blank">miconda@gmail.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Another aspect -- are the connections to be used for transmission
already open? If it is a new connection, it can be also the fact
that the other side is not accepting the new one very fast.</p>
<p>Cheers,<br>
Daniel<br>
</p><div><div class="h5">
<br>
<div class="m_8372518453409037842moz-cite-prefix">On 24.04.18 19:46, Andrew Chen \
wrote:<br> </div>
<blockquote type="cite">
<div dir="ltr">Thanks Daniel.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Apr 24, 2018 at 10:45 AM,
Daniel-Constantin Mierla <span dir="ltr"><<a \
href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span> \
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px \
#ccc solid;padding-left:1ex"> <div text="#000000" bgcolor="#FFFFFF">
<p>Hello,</p>
<p>you can see tcp write queued bytes with:</p>
<p>kamctl rpc core.tcp_info</p>
<p>If you have an older version, do kamcmd core.tcp_info</p>
<p>It may be also the OS queues that are busy, if the
other side is not not reading fast, look at netstat
output for Send-Queue in:</p>
<p>netstat -altp</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>
<div class="m_8372518453409037842h5"> <br>
<div \
class="m_8372518453409037842m_-897288693080720176moz-cite-prefix">On 22.04.18 18:47, \
Andrew Chen wrote:<br> </div>
<blockquote type="cite">
<div dir="ltr">Hello,
<div><br>
</div>
<div>Can anyone provide any suggestions on how to
log buffer usage?</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Apr 17, 2018 at
7:46 PM, Andrew Chen <span dir="ltr"><<a \
href="mailto:achen@fuze.com" target="_blank">achen@fuze.com</a>></span> \
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex"> <div dir="ltr">Thanks Alex for \
your response. I honestly forgot about these parameters and
will play with them a bit.
<div><br>
</div>
<div>Is there anyway to log how much is
written or stored in the buffer?</div>
</div>
<div class="gmail_extra">
<div>
<div \
class="m_8372518453409037842m_-897288693080720176h5"><br> <div \
class="gmail_quote">On Tue, Apr 17, 2018 at 7:35 PM, Alex Balashov <span \
dir="ltr"><<a href="mailto:abalashov@evaristesys.com" \
target="_blank">abalashov@evaristesys.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br> <br>
Could it be that your send queue or
other parameters regulating outgoing<br>
flows are too low?<br>
<br>
Stuff like this:<br>
<br>
<a \
href="https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_conn_wq_max" \
rel="noreferrer" target="_blank">https://www.kamailio.org/wiki/<wbr>cookbooks/5.1.x/core#tcp_conn_<wbr>wq_max</a><br>
<a href="https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_wq_max" \
rel="noreferrer" target="_blank">https://www.kamailio.org/wiki/<wbr>cookbooks/5.1.x/core#tcp_wq_ma<wbr>x</a><br>
<br>
-- Alex<br>
<span><br>
On Tue, Apr 17, 2018 at 05:00:28PM
-0700, Andrew Chen wrote:<br>
<br>
> Hi Kamailio community,<br>
> <br>
> I need your urgent help
regarding a situation where the
Kamailio TCP packet<br>
> delayed in relaying SIP
packets. They delay between the
time Kamailio logs<br>
> the relay to the time it left
the system was ~20 seconds
difference, which<br>
> is huge in SIP world.<br>
> <br>
> Any ideas, thoughts or
suggestions on how I can narrow
down to the<br>
> problem? We have about 30
cases of this today<br>
> <br>
> Thanks in advance.<br>
> <br>
> -- <br>
> Andy Chen<br>
> Sr. Telephony Lead Engineer<br>
</span>> achen@ <<a \
href="mailto:achen@thinkingphones.com" \
target="_blank">achen@thinkingphones.com</a>><a href="http://fuze.com" \
rel="noreferrer" target="_blank">fuze<wbr>.com</a><br> > <br>
> -- <br>
> *Confidentiality Notice: The
information contained in this e-mail
and any<br>
> <br>
> attachments may be
confidential. If you are not an
intended recipient, you<br>
> <br>
> are hereby notified that any
dissemination, distribution or
copying of this<br>
> <br>
> e-mail is strictly prohibited.
If you have received this e-mail in
error,<br>
> <br>
> please notify the sender and
permanently delete the e-mail and
any<br>
> <br>
> attachments immediately. You
should not retain, copy or use this
e-mail or<br>
> <br>
> any attachment for any purpose,
nor disclose all or any part of the<br>
> <br>
> contents to any other person.
Thank you.*<br>
<br>
> \
______________________________<wbr>_________________<br> > Kamailio (SER) - Users \
Mailing List<br>
> <a href="mailto:sr-users@lists.kamailio.org" \
target="_blank">sr-users@lists.kamailio.org</a><br> > <a \
href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" rel="noreferrer" \
target="_blank">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a><br>
<span \
class="m_8372518453409037842m_-897288693080720176m_-3561836623982961662HOEnZb"><font \
color="#888888"><br> <br>
-- <br>
Alex Balashov | Principal |
Evariste Systems LLC<br>
<br>
Tel: +1-706-510-6800 /
+1-800-250-5920 (toll-free) <br>
Web: <a href="http://www.evaristesys.com/" \
rel="noreferrer" target="_blank">http://www.evaristesys.com/</a>,
<a href="http://www.csrpswitch.com/" \
rel="noreferrer" target="_blank">http://www.csrpswitch.com/</a><br> <br>
\
______________________________<wbr>_________________<br> Kamailio (SER) - Users \
Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" \
target="_blank">sr-users@lists.kamailio.org</a><br> <a \
href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" rel="noreferrer" \
target="_blank">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a><br>
</font></span></blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
</div>
</div>
<div \
class="m_8372518453409037842m_-897288693080720176m_-3561836623982961662gmail_signature" \
data-smartmail="gmail_signature"> <div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr" style="font-size:12.8px">Andy \
Chen</div>
<div dir="ltr" style="font-size:12.8px">
<div>Sr. Telephony Lead Engineer</div>
<div>415 516 5535 (M)</div>
<div><a href="mailto:achen@thinkingphones.com" \
target="_blank">achen@</a><a href="http://fuze.com" \
target="_blank">fuze.com</a></div> <div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div \
class="m_8372518453409037842m_-897288693080720176gmail_signature" \
data-smartmail="gmail_signature"> <div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr" style="font-size:12.8px">Andy
Chen</div>
<div dir="ltr" style="font-size:12.8px">
<div>Sr. Telephony Lead Engineer</div>
<div>415 516 5535 (M)</div>
<div><a href="mailto:achen@thinkingphones.com" \
target="_blank">achen@</a><a href="http://fuze.com" \
target="_blank">fuze.com</a></div> <div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<span \
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">*Confidentiality
Notice: The information contained in this e-mail
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<fieldset \
class="m_8372518453409037842m_-897288693080720176mimeAttachmentHeader"></fieldset> \
<br>
<pre>______________________________<wbr>_________________
Kamailio (SER) - Users Mailing List
<a class="m_8372518453409037842m_-897288693080720176moz-txt-link-abbreviated" \
href="mailto:sr-users@lists.kamailio.org" \
target="_blank">sr-users@lists.kamailio.org</a> <a \
class="m_8372518453409037842m_-897288693080720176moz-txt-link-freetext" \
href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" \
target="_blank">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a> \
</pre> </blockquote>
<br>
</div>
</div>
<span class="m_8372518453409037842HOEnZb"><font color="#888888">
<pre \
class="m_8372518453409037842m_-897288693080720176moz-signature" cols="72">-- \
Daniel-Constantin Mierla <a \
class="m_8372518453409037842m_-897288693080720176moz-txt-link-abbreviated" \
href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- \
<a class="m_8372518453409037842m_-897288693080720176moz-txt-link-abbreviated" \
href="http://www.linkedin.com/in/miconda" \
target="_blank">www.linkedin.com/in/miconda</a> Kamailio World Conference - May \
14-16, 2018 - <a class="m_8372518453409037842m_-897288693080720176moz-txt-link-abbreviated" \
href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a></pre> \
</font></span></div> </blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="m_8372518453409037842gmail_signature" \
data-smartmail="gmail_signature"> <div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr" style="font-size:12.8px">Andy Chen</div>
<div dir="ltr" style="font-size:12.8px">
<div>Sr. Telephony Lead Engineer</div>
<div>415 516 5535 (M)</div>
<div><a href="mailto:achen@thinkingphones.com" \
target="_blank">achen@</a><a href="http://fuze.com" \
target="_blank">fuze.com</a></div> <div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">*Confidentiality
Notice: The information contained in this e-mail and any</span><br \
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may be confidential. If you are not an intended recipient, you</span><br \
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<span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">are
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style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
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</blockquote>
<br>
<pre class="m_8372518453409037842moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="m_8372518453409037842moz-txt-link-abbreviated" \
href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- \
<a class="m_8372518453409037842moz-txt-link-abbreviated" \
href="http://www.linkedin.com/in/miconda" \
target="_blank">www.linkedin.com/in/miconda</a> Kamailio World Conference - May \
14-16, 2018 - <a class="m_8372518453409037842moz-txt-link-abbreviated" \
href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a></pre> \
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div \
class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div \
dir="ltr"><div dir="ltr" style="font-size:12.8px">Andy Chen</div><div dir="ltr" \
style="font-size:12.8px"><div>Sr. Telephony Lead Engineer</div><div>415 516 5535 \
(M)</div><div><a href="mailto:achen@thinkingphones.com" target="_blank">achen@</a><a \
href="http://fuze.com" \
target="_blank">fuze.com</a></div><div><br></div></div></div></div></div></div> \
</div>
<br>
<span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">*Confidentiality \
Notice: The information contained in this e-mail and any</span><br \
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[Attachment #6 (text/plain)]
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