[Live-devel] ubuntu live555 tuning issue

[Jeff Shanab]

f i r e w a l l ???

Wireshark may help here. If it is a sea of red then that may indicate
issues.


Also check the measurements. Are all users getting the same? ie 1000 at 1
fps vs 800 @ 10fps ?? so check the bandwidth to account for loss to.

On Thu, Oct 2, 2014 at 5:47 PM, Pete Pulliam <ppulliam at llnw.com> wrote:

> More data points, more refined confusion, about an ubuntu live555 tuning
> problem.
>
> When serving from port 8554 (non-priveliged), we are getting 800
> connections comfortably (Great!)
>
> When serving from port 554 (privileged), we are sucking at less than 100
> connections, even with extreme tuning (Terrible!)
>
> No, we can't actually avoid using port 554.
>
> This is true for two different versions of Ubuntu linux, and has been
> tested on six different pieces of hardware in three different pops.  I've
> looked for iptables rules.
>
> The test framework uses openRTSP with the last client started returning
> quality metrics, with one or more VLC clients also playing for visual
> confirmation.
>
> "My Code" refers to a live proxy implementation.
>
> Here is a simplified view of the test graph:
>
> *My Code* (based on April edition of live555)
>
> root, port 8554, udp -> GREAT! (tested at 800+ players)
>
> root, port 554, udp -> terrible
>
> root, port 554, rtsp over TCP -> GREAT! (tested at 1000+ players)
>
> root, port 554, udp, players all on localhost -> GREAT! (tested at 1000+
> players)
>
>
> *Stock April live555 proxy*
> non-privileged, port 8554 -> GREAT!
> root, port 554 -> terrible
>
> *Stock September live555 proxy*
> non-privileged, port 8554 -> GREAT!
> root, port 554 -> terrible
>
>
> Comments will be greatly appreciated.
>
> Thanks,
>
>
> Pete
>
>
>
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