All mentioned boxes are VMWare VMs probably configured with default drivers and settings. Unfortunately, I don't know which network equipements are used when those boxes communicate with each other. So yes, maybe I banged into an unexpected limit because of this ignorance.
Anyway, from my testing, I was mostly surprised by 2 things: 1- I consistently hit a 200 calls when I let run an Asterisk instance on the SIPp (calls passing locally from SIPp to a first Asterisk instance before hitting SUT): I thought that communications inside a given VM was "unlimited and cheap" and I was apparently wrong, Disabling Asterisk in my first VM allowed me to hit a 500 limit at the price of loosing Asterisk flexibility to log RTCP stats, select exotic codec and so on. 2- Increasing asterisk.conf's maxfiles value (from 10000 to 40000, for instance), allowed me to get more than 695 successfull call out of 700 but I could succeed to get, even once, 700 successfull calls, even when I tried with my current 400000 maxfiles limit. 2018-03-06 23:35 GMT+01:00 Bruce Ferrell <bferr...@baywinds.org>: > > On 03/06/2018 01:58 PM, Olivier wrote: > >> Hello, >> >> I'm running load testing sessions. >> My System Under Test is an asterisk 13 with 16GB, configured with >> maxfiles set to 400 000. >> This system is supposed do produce simple SIP trunking services without >> transcoding. >> >> >> The box sending call to my System Under Test is anabled with SIPp. >> I'm banging on a 700 concurrent calls/50 CAPS limit I would like to >> improve, if possible. >> >> Tests are done with both signaling and media like this: >> >> SIPp <---> SUT (asterisk 13) <---> Asterisk box echoing media >> >> I checked bandwidth first and got 930 Mb/s on each leg (from SIPp to SUT >> or SUT to echoing box) using iperf3 TCP testing though my target relies on >> UDP >> >> >> My questions are: >> >> 1. Have you ever noticed a better scalability using UDP or TCP ? >> >> 2. Where do Retransmission I'm observing on SIPp console most probably >> come from ? Network issues ? My SIPp not beeing correctly tuned ? Lack of >> resources somewhere ? >> >> 3. Recommandations ? Suggestions ? >> >> Best >> >> >> I do network management for a living. > > In your description, I see nothing to describe the network other than an > observed 930Mb/s. > > What is the network configuration; What NIC(s), switches etc. > > Treating these as effectively "unlimited" is a certain recipe for banging > into unexpected limits. > > Different NICs and switchs can and do provide differing levels of > performance. > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > Check out the new Asterisk community forum at: > https://community.asterisk.org/ > > New to Asterisk? Start here: > https://wiki.asterisk.org/wiki/display/AST/Getting+Started > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
-- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: https://wiki.asterisk.org/wiki/display/AST/Getting+Started asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users