<p>Hi <a href="https://github.com/kelnos" class="user-mention">@kelnos</a> , your backtrace points to the lock for protecting the write operations on a TCP connection. This means you have a connection with a very very slow (and possible blocking) writing. <br>
I would suggest to switch to async writing for TCP:<br>
             <a href="http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc82">http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc82</a><br>
or to stay in blocking mode but to reduce the write timeout:<br>
             <a href="http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc89">http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc89</a></p>

<p>Regards,<br>
Bogdan</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br>Reply to this email directly or <a href="https://github.com/OpenSIPS/opensips/issues/410#issuecomment-73475921">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AFOcifOe75FxKy6nNGzdRwBIM0z3cMRgks5nqG6PgaJpZM4DcGMP.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
  <div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
    <link itemprop="url" href="https://github.com/OpenSIPS/opensips/issues/410#issuecomment-73475921"></link>
    <meta itemprop="name" content="View Issue"></meta>
  </div>
  <meta itemprop="description" content="View this Issue on GitHub"></meta>
</div>