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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Also, what value do you have for MySQL parameter innodb_buffer_pool_size and how large is your MySQL data directory at peak?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Phil Lavin<br>
<b>Sent:</b> 24 September 2016 20:20<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org><br>
<b>Subject:</b> Re: [SR-Users] Location Table In db_mode 3<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">You could look at tweaking MySQL setting
<a href="http://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_flush_log_at_trx_commit">
innodb_flush_log_at_trx_commit</a> and setting its value to <b>0</b>. It’ll make your database not ACID compliant, but I don’t see that as being a major issue for transient data such as that stored in the Kamailio DB.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">I’m not entirely convinced that changing it to a memory table will help as you are presumably doing MySQL replication between your two Kamailio nodes.
Memory tables don’t replicate well.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sr-users [<a href="mailto:sr-users-bounces@lists.sip-router.org">mailto:sr-users-bounces@lists.sip-router.org</a>]
<b>On Behalf Of </b>Gholamreza Sabery<br>
<b>Sent:</b> 24 September 2016 20:04<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <<a href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a>><br>
<b>Subject:</b> Re: [SR-Users] Location Table In db_mode 3<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On average I have about 2000 registrations per second and this configuration does not work with this rate. Maximum number of registrations that we can handle with db_mode 3 is 1000 per second.<o:p></o:p></p>
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<p class="MsoNormal">On Sat, Sep 24, 2016 at 10:12 PM, Phil Lavin <<a href="mailto:phil.lavin@cloudcall.com" target="_blank">phil.lavin@cloudcall.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">What rate of registrations do you have?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sr-users
[mailto:</span><a href="mailto:sr-users-bounces@lists.sip-router.org" target="_blank"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">sr-users-bounces@lists.sip-router.org</span></a><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">]
<b>On Behalf Of </b>Gholamreza Sabery<br>
<b>Sent:</b> 24 September 2016 19:39<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <</span><a href="mailto:sr-users@lists.sip-router.org" target="_blank"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">sr-users@lists.sip-router.org</span></a><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">><br>
<b>Subject:</b> [SR-Users] Location Table In db_mode 3</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I have multiple Kamailio servers in an Active/Active scenario (the database is a MySQL server) using db_mode 3. But when the number of clients goes up writes on the location table
become too much and it causes database problems. I even put my location table on a separate SSD disk on the server to separate it's IO but still at times I have problems. How can I move location table into memory? Is this a good solution? What other options
do I have?<o:p></o:p></p>
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_______________________________________________<br>
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list<br>
<a href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a><br>
<a href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></p>
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