<div dir="ltr">Excellent Ingela! By upgrading to the R!6B02 we have been able to eliminate the above stated issue with the Erlang message queues growing. However, we are still seeing VERY slow throughput to ssl endpoints. In our limited, scaled-back, test. We are seeing message throughput to an ssl endpoint at 12 msgs/sec and non-ssl of 300+ msgs/sec. Is there a connection limit for ssl connections related to Erlang directly?<div>
<br></div><div style>Thank you!</div><div style><br></div><div style>Best regards,</div><div style><br></div><div style>Ryan Brown</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Sep 25, 2013 at 6:58 AM, Ingela Andin <span dir="ltr"><<a href="mailto:ingela.andin@gmail.com" target="_blank">ingela.andin@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 dir="ltr">Hi!<br><div><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">2013/9/25 Ryan Brown <span dir="ltr"><<a href="mailto:ryankbrown@gmail.com" target="_blank">ryankbrown@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><div><span style="font-family:arial,sans-serif;font-size:13px">Hi Ingela,</span><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">
Thank you for the response. I suppose I don't really know how to see what messages are in the ssl queue. What I am looking at is nregs and watching the "msgs" column growing at a steady pace. Is there a way to look at these messages?</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div></div></div></blockquote></div><div><br><div>You can use the observer application to look at erlang processes.<br><br><a href="http://www.erlang.org/erldoc?q=observe&x=0&y=0" target="_blank">http://www.erlang.org/erldoc?q=observe&x=0&y=0</a><br>
</div><div class="im"><div><br> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div style="font-family:arial,sans-serif;font-size:13px">
As
for reproducing in the latest version of ssl. I was planning on
upgrading a machine to 16 today and attempting to reproduce. This should
get me the latest ssl version correct?</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div></div></div></blockquote><div><br></div></div><div>R16B02
(ssl-5.3.1) is the latest. There is a bug in ssl-5.1 (R15B02) version (fix in ssl5.2) that
perhaps could be related to your problem. <br><br></div><div>Regards Ingela Erlang/OTP Team - Ericsson AB<br></div><div class="im"><div><br></div><br><div class="gmail_quote">On Wed, Sep 25, 2013 at 2:09 AM, Ingela Andin <span dir="ltr"><<a href="mailto:ingela.andin@gmail.com" target="_blank">ingela.andin@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra">Hi!<br></div><div class="gmail_extra"><br><div class="gmail_quote">
<div>
2013/9/24 Ryan Brown <span dir="ltr"><<a href="mailto:ryankbrown@gmail.com" target="_blank">ryankbrown@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">We have a fairly high-volume (28m+ messages/day) application that works, essentially, as a pub-sub for many internal and external applications. We are experiencing an issue under load where and subscribers that are using ssl are experiencing a significant slowness in delivery. When we restart the server we begin watching the processes in our application and we can, very reliably and fairly quickly, see the ssl_manager_sup process message queue start increasing in size. As this happens, all messages for those subscribers with ssl endpoints begin to back-up and delivery slows to a near halt.<div>
<br></div></div></blockquote></div><div><div><br>What messages are there in the queue?<br> <br><br></div></div><div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>It appears that ssl is a bit of a known issue within erlang. Or, at least, a tricky use-case to perfect. Are there any known issues that we can address in terms of configuration, best practices in setting-up ssl connections or anything else for that matter we can be doing to resolve this issue or more clearly identify the root cause? We're in active troubleshooting mode and doing what we can to dig deeper including dissecting the code to the kernel.</div>
<div><br></div><div>We are running Erlang 15B02 (64bit).</div><div><br></div><br></div></blockquote></div></div><div><br><div>So that would be ssl-5.1? Is it possible to reproduce the problem on the latest version ?<br>
<br></div>Regards Ingela Erlang/OTP team - Ericsson AB</div></div>
</div>
</blockquote></div><br><br clear="all"><div><br></div></div></div><span class="HOEnZb"><font color="#888888"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><div class="gmail_extra">
<span><font color="#888888">-- <br>-rb
</font></span></div></div>
</blockquote></font></span></div><br></div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>-rb
</div>