we setup server with 10 Gbits card, and 10Gbits link.
linux centos 6.3 64bit
only one publish live (RTSP)
for streaming live used only RTMPT port 80
we used tunning metode from wowza artical, also tunning linux kernel for 10gbit traffic
also from wowza forum , some sugestion.
server are testing and can reach 6Gbps traffic, test with test tool like iperf, netperf
we also do testing wowza tool , and reach 5.9 Gbits traffic.
but, we have problem when used real production, when traffic reach 1,2Gbps ... stream begine to blocking
if we calculate not reach over 1,2gbps, stream work OK ... 2000 vievers, with 200k stream .. all wok ok
but, is we have stream 1000kbps, when we reach 1200 vievers, stream begin to blocking.
i was see, in this moment, when streem blocking, i also can not access to woza stremamanager page, on port 8086 ... is to slow to open ... ALL other services like iptraf over SSH, webmin, conecting to another SSH ... all on same machine , work
only we have problem with WOWZA, probably JAVA service for WOWZA proces.
I assume your test with using the Wowza tool that reached 5.9gbs was the Wowza load test tool and that the client machines were nearby on the same LAN. So it is definitely, as you said, a bandwidth bottleneck somewhere, not Wowza configuration and tuning. So it must be further up, some switch perhaps or where your network connects to the internet. Search for "find bandwidth bottleneck" for some ideas.
Are you saying you don't think it is bandwidth bottleneck now? Do you think it is a problem with Wowza? You report a load test that yielded 5.9gbs output from Wowza, which is outstanding.
If you put two instances of Wowza on a server with 10gbs nic, you can get better utilization of that network capacity, but if there is an upstream bottleneck that will just be twice as much data that is not getting through, so it won't solve that problem.