[Icecast] icecast2 mountpoints maximum

[Henri Zikken]

A small update from my side.. i have updated both icecast and libshout to
the nightly snapshot versions of icecast.org. Also, in the configfile i have
raised the threadpool to 500 and all timeouts to 3000.

This did help a bit. Right now i can get it up to 1020 inputstreams, however
then it just stops accepting new connections.

Is there a theoretical maximum to the number of mountpoints icecast can
handle?



-----Oorspronkelijk bericht-----
Van: icecast-bounces at xiph.org [mailto:icecast-bounces at xiph.org] Namens Henri
Zikken
Verzonden: woensdag 5 oktober 2005 17:02
Aan: icecast at xiph.org
Onderwerp: [Icecast] icecast2 mountpoints maximum


We are using icecast as stream-relay for a true narrowcast solution 
we've developed. The idea behind the system is that each individual 
client gets it's own mountpoint.

Basically we have an application that creates streams. Its written in 
c++ and uses libshout to handle connecting to icecast.

Everything works fine, as long as we keep the number of mountpoints 
below 347. As soon as we try to create more mountpoints, it stops, as 
in, it never returns a mountpoint.

in our application, we create a new mountpoint by doing:

shout = shout_new()

this never returns after the 347th stream, so our application waits 
indefinatly for icecast to return a mountpoint.

Our icecast2.xml reads as follows:
<icecast>
    <limits>
        <clients>3000</clients>
        <sources>3000</sources>
        <threadpool>30</threadpool>
        <queue-size>102400</queue-size>
        <client-timeout>300</client-timeout>
        <header-timeout>300</header-timeout>
        <source-timeout>300</source-timeout>
        <burst-on-connect>1</burst-on-connect>
        <burst-size>12800</burst-size>
    </limits>
    <authentication>
        <source-password>hackme</source-password>
        <relay-password>hackme</relay-password>
        <admin-user>admin</admin-user>
        <admin-password>do_not_hackme</admin-password>
    </authentication>
    <hostname>localhost</hostname>
        <listen-socket>
        <port>8000</port>
    </listen-socket>
    <paths>
        <basedir>/usr/share/icecast2</basedir>
        <logdir>/var/log/icecast2</logdir>
        <webroot>/usr/share/icecast2/web</webroot>
        <adminroot>/usr/share/icecast2/admin</adminroot>
        <alias source="/" dest="/status.xsl"/>
    </paths>
    <logging>
        <accesslog>access.log</accesslog>
        <errorlog>error.log</errorlog>
          <loglevel>4</loglevel> <!-- 4 Debug, 3 Info, 2 Warn, 1 Error -->
    </logging>
    <security>
        <chroot>0</chroot>
    </security>
</icecast>

The icecast version is: 2.2.0

The last part of the (error.log) logfile reads:
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node 
source_total_connections (346)
[2005-10-05  16:59:23] DBUG stats/process_source_event new node 
listeners (0)
[2005-10-05  16:59:23] DBUG stats/process_source_event new node 
server_name ("10308")
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node 
connections (347)
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node 
source_client_connections (347)
[2005-10-05  16:59:23] DBUG stats/process_source_event new source stat 
/10309
[2005-10-05  16:59:23] DBUG stats/process_source_event new node public (0)
[2005-10-05  16:59:23] DBUG stats/process_source_event new node 
listenurl (http://localhost:8000/10309)
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node sources 
(347)
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node 
source_total_connections (347)
[2005-10-05  16:59:23] DBUG stats/process_source_event new node 
listeners (0)
[2005-10-05  16:59:23] DBUG stats/process_source_event new node 
server_name ("10309")
[2005-10-05  16:59:23] DBUG stats/modify_node_event update node 
connections (348)


Is this a hard-coded limit of sources, or are we doing something wrong?

Regards,

Henri Zikken


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