Thanks very much for your examples On Fri, May 16, 2008 at 8:59 PM, Sherwood McGowan < [EMAIL PROTECTED]> wrote:
> Alexander Olekhnovich wrote: > > Hi Asterisk Users, > > > > I'm interested in how many concurrent calls Asterisk can process > > without troubles. I mean 1 Asterisk server (software) like either > > proxy or media server (any numbers will be appropriate). > > > > 1. Is there any limitations by the software? What is this number? > > 2. What is the maximum count of concurrent calls you've ever seen/tested? > > > > -- > > Thanks in advance > > Alexander Olekhnovich > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > > > asterisk-users mailing list > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > Rather than jump into the heavy list of replies, in which there's some > heated discussion, I thought I'd offer a quick $0.02: > > Asterisk's concurrent call capabilities is limited (as far as I know) > only by the hardware you're using and the implementation. By this I mean > that the amount of transcoding, meetme conferences, SIP/IAX/Zap > channels, recording, CDR backend, etc...all take their toll on your > hardware's capabilities. > > I'll give you two examples: > 1. On a Dual 1.5Ghz XEON, 2GB RAM server running CentOS 4.5(unsure on > this anymore) with only Asterisk 1.4 TRUNK in 1995 in a SIP only > environment with ONLY ulaw encoding, I've seen 500+ concurrent calls > with over 2K users on a single machine. All clients were set for > canreinvite=no, and qualify=yes. This system did not show degradation of > performance. > > 2. I'm currently working with a client that has a Dual 2.5 Ghz, 2GB RAM > server, running Debian Etch. They are running two EM Wink T1 Trunks, and > 51 Zap phones locally running through Adtran Total Access Channel Banks, > 12 POTS lines running through a Rhino channel bank, and 27 SIP Phones. > Concurrent calls only run at around 43 calls currently, although I've > seen it as high as 53, and ALL calls are recorded other than local > spying on channels and inter-extension calls. Additionally, this server > has PostgreSQL and Apache running on it to allow administration to > review CDRs and pull recordings, and a Zabbix monitoring agent daemon > sending data to a local network Zabbix server. This server showed > little or no degradation in call quality or service (even with Sox and > Speexmix running in the background converting recordings via a > background script) until just recently when we changed T1 providers and > got EM Wink instead of the requested PRI. Before we had 99.999% of all > calls complete from dial to hangup with no issues. Now we're at 98.8%, > with calls being dropped in midconversation. I have not found the answer > to what is causing the server to drop calls, other than after the > switchover to EM_W our Zaptel accuracy started degrading. We are in the > process of figuring out how we can resolve this, including possible > hardware upgrades (which were already planned for handling recordings > better) > > I hope these two examples help show you how two similar machines can > vary drastically in performance with similar hardware. Differences in > implementation make a BIG difference. > > Slainte, > Sherwood McGowan > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- Best Regards Alexander Olekhnovich
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