<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><html><head></head><body><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Would anyone be able to give me some guidance on what I can expect from Rabbit regarding the rate of queue creation, and what I can do to increase it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have one Rabbit box with many virtual hosts, each host has a durable topic exchange. <o:p></o:p></p><p class=MsoNormal>The large majority of the time our system is creating approximately 5 queues per second with two bindings each across the whole rabbit box (I don’t currently have figures for queue deletion) and each queue creation request averages about 350ms.<o:p></o:p></p><p class=MsoNormal>The queues are non-durable and make use of x-expires, x-message-ttl and auto-delete.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Recently I have started to get short lived spikes in queue creation up to approximately 20 queues per second across the whole rabbit box. <o:p></o:p></p><p class=MsoNormal>When this happens the queue creation request time can jump up to anywhere between 10000ms and 20000ms.<o:p></o:p></p><p class=MsoNormal>At the same time as this it appears as if the publishing request to these exchanges also increases from about 40ms to about 5000ms.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am currently using RabbitMQ 2.8.6 on Erlang R13B03 running on an Ubuntu server with 2Gb RAM<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Jim<o:p></o:p></p></div><br /><br />
<p><font style="BACKGROUND-COLOR: #ffffff">
<br />*****************************************************************************<br />
<font color="#009900" face="Webdings" size="4">P</font><font color="#009900" face="verdana,arial,helvetica" size="2"> <strong>Please
consider the environment before printing this email or attachments</strong></font>
</font></p><p><font style="BACKGROUND-COLOR: #ffffff">
<br />This email and any attachments are confidential, protected by copyright and may be legally privileged. If you are not the intended recipient, then the dissemination or copying of this email is prohibited. If you have received this in error, please notify the sender by replying by email and then delete the email completely from your system. Neither Sporting Index nor the sender accepts responsibility for any virus, or any other defect which might affect any computer or IT system into which the email is received and/or opened. It is the responsibility of the recipient to scan the email and no responsibility is accepted for any loss or damage arising in any way from receipt or use of this email. Sporting Index Ltd is a company registered in England and Wales with company number 2636842, whose registered office is at Gateway House, Milverton Street, London, SE11 4AP. Sporting Index Ltd is authorised and regulated by the UK Financial Services Authority (reg. no. 150404) and Gambling Commission (reg. no. 000-027343-R-308898-001). Any financial promotion contained herein has been issued
and approved by Sporting Index Ltd.<br />
</font></p><font style="BACKGROUND-COLOR: #ffffff">
<br />Outbound email has been scanned for viruses and SPAM<br />
</font><p></p>
</body></html></html>