*Hi Guys*, The cpu is fine and the ram is okay the machine has 12 gig of ram and 12 2.6 cpu cores. After about a peak of 1300 calls it drops to 600 calls ** *From:*sr-users [mailto:sr-users-bounces@lists.sip-router.org] *On Behalf Of *Daniel-Constantin Mierla *Sent:* 12 August 2016 15:35 *To:* Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.sip-router.org&gt; *Subject:* Re: [SR-Users] Struggling at 1000 Concurrent Calls Hello, can you provide more details about what actually happens? High cpu? Dropped traffic? ... If you have many log messages, be sure syslog is configured in asynchronous mode. Cheers, Daniel On 12/08/16 15:13, Jack Stevens wrote: Hi Guys, I have built an SBC using kamailio with the dispatcher module and rtpengine and when I run a sip test I find it struggles to go past 1000 calls at 20cps would really like some help on how to resolve this. As I am very new to this I am stuggeling to work out where to start from. I have found when running this sort of load the debian box drops pings any ideas Kind Regards CONFIDENTIAL EMAIL FROM NETCALL TELECOM LIMITED This email, and any attachments, is intended only for the above addressee. It may contain private and/or confidential information. If you have received this email in error you are on notice of its status, please immediately notify the sender by return email then delete this message and any attachments. If you are not the addressee, except to notify the sender, you must not use, disclose, copy or distribute this email and/or its attachments. Netcall Telecom accepts no responsibility for any changes made to this message after it has been sent by the original author. Opinions or views expressed in this email may be those of the individual sender and not Netcall Telecom. Nothing in this email shall bind Netcall Telecom in any contract or obligation Netcall Telecom Ltd Registered in England 2831215. Registered Office : 3rd Floor, Hamilton House, 111 Marlowes, Hemel Hempstead, Herts, HP1 1BB _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla http://www.asipto.com -http://www.kamailio.org http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -http://www.linkedin.com/in/miconda CONFIDENTIAL EMAIL FROM NETCALL TELECOM LIMITED This email, and any attachments, is intended only for the above addressee. It may contain private and/or confidential information. If you have received this email in error you are on notice of its status, please immediately notify the sender by return email then delete this message and any attachments. If you are not the addressee, except to notify the sender, you must not use, disclose, copy or distribute this email and/or its attachments. Netcall Telecom accepts no responsibility for any changes made to this message after it has been sent by the original author. Opinions or views expressed in this email may be those of the individual sender and not Netcall Telecom. Nothing in this email shall bind Netcall Telecom in any contract or obligation Netcall Telecom Ltd Registered in England 2831215. Registered Office : 3rd Floor, Hamilton House, 111 Marlowes, Hemel Hempstead, Herts, HP1 1BB _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users