Measure and measure. After that, measure again. There's a lot of variables. The FS wiki has some guides on perf testing. -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Dmitry Mordovin Sent: Thursday, 3 December, 2015 13:27 To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Subject: [Freeswitch-users] How to calculate Hardware System Requirements (VM) Hi All! Dear guys, I need one server to handle 200 concurent calls with codec transcoding. Please point me, how to calculate the system requirements for VM? RAM, CPU GHz, cores May need network optimization? VMDq or SR-IOV BR, Dmitry _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org