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    <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>
    <br>
    <div class="moz-cite-prefix">On 22.04.18 18:47, Andrew Chen wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAEytwJ0zmkiXHa3r+N7Xjdg0+V0zfBEeET3B-qBVDWOPL-mfCA@mail.gmail.com">
      <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" moz-do-not-send="true">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="h5"><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" moz-do-not-send="true">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"
                        moz-do-not-send="true">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"
                        moz-do-not-send="true">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" moz-do-not-send="true">achen@thinkingphones.com</a>><a
                        href="http://fuze.com" rel="noreferrer"
                        target="_blank" moz-do-not-send="true">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" moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
                      > <a
                        href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users"
                        rel="noreferrer" target="_blank"
                        moz-do-not-send="true">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a><br>
                      <span class="m_-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"
                            moz-do-not-send="true">http://www.evaristesys.com/</a>,
                          <a href="http://www.csrpswitch.com/"
                            rel="noreferrer" target="_blank"
                            moz-do-not-send="true">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" moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
                          <a
                            href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users"
                            rel="noreferrer" target="_blank"
                            moz-do-not-send="true">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_-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" moz-do-not-send="true">achen@</a><a
                            href="http://fuze.com" target="_blank"
                            moz-do-not-send="true">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="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" moz-do-not-send="true">achen@</a><a
                      href="http://fuze.com" target="_blank"
                      moz-do-not-send="true">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
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">attachments
        may be confidential. If you are not an intended recipient, you</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">are
        hereby notified that any dissemination, distribution or copying
        of this</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">e-mail
        is strictly prohibited. If you have received this e-mail in
        error,</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">please
        notify the sender and permanently delete the e-mail and any</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">attachments
        immediately. You should not retain, copy or use this e-mail or</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">any
        attachment for any purpose, nor disclose all or any part of the</span><br
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
      <span
style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">contents
        to any other person. Thank you.*</span>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
Kamailio (SER) - Users Mailing List
<a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.kamailio.org">sr-users@lists.kamailio.org</a>
<a class="moz-txt-link-freetext" href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a>
</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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