What do you have ulimit -n and ulimit -x set to? Thanks,
James Texter On Fri, 2007-09-21 at 08:51 -0400, Wai Wu wrote: > I am not so sure if the interrupts has any thing to do with it. I run some > more test just now and I am getting these error on the console of the call > receiving machine. All it does is wait for 45 seconds. I think there is more > can be done on the Linux configuration, but I just don't know what. > > Sep 21 08:42:30 WARNING[22820]: channel.c:565 ast_channel_alloc: Channel > allocation failed: Can't create alert pipe! > Sep 21 08:42:30 WARNING[22820]: chan_sip.c:2797 sip_new: Unable to allocate > SIP channel structure > Sep 21 08:42:30 NOTICE[22820]: chan_sip.c:10843 handle_request_invite: Unable > to create/find channel > Sep 21 08:43:03 WARNING[22820]: channel.c:565 ast_channel_alloc: Channel > allocation failed: Can't create alert pipe! > Sep 21 08:43:03 WARNING[22820]: chan_sip.c:2797 sip_new: Unable to allocate > SIP channel structure > Sep 21 08:43:03 NOTICE[22820]: chan_sip.c:10843 handle_request_invite: Unable > to create/find channel > > > > -----Original Message----- > From: [EMAIL PROTECTED] on behalf of Gordon Henderson > Sent: Fri 9/21/2007 3:40 AM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [asterisk-users] Asterisk 1.2.24 simultaneous call limits. > > On Thu, 20 Sep 2007, Wai Wu wrote: > > > > > Hi everyone, > > > > I am running into wall today with simultaneous call limits. I have two > > Asterisk machines (fast 3GHz C2D with 2GB of ram). I tried to create a > > lot of sip calls from one machine to the other by issuing AMI Originate > > commands to one machine. The machine that makes calls plays a message > > (demo-intruct) upon the other machine answer. The machine receives the > > calls just waits for 40 seconds then hangs up. Throught the manager > > connection, I was creating 10 calls per-second. I also have sip phone > > registered with the calling machine. At around 150 to 200 calls. When I > > call the machine that's making all the calls, most of the calls couldn't > > go through. For the ones that went through, most of them will drop off > > within seconds of the call. But here is catch. When I run 'top', the cpu > > is idling 97%. My question is. Is there a limit on the number of > > simultaneous calls Asterisk can handle? I know I have very fast systems. > > Shouldn't they be able to handle that many calls? What is your take? > > 200 calls using g711 needs 16Mb/sec of network bandwidth - each way. (200 > * 80Kbs) This is well within the limits of a 100Mb network interface. > > However it also needs 50 packets per second of 160 bytes + IP overhead > each way, per call, so thats 20,000 packets/second, and that might well be > the bottleneck for your system, not just in the hardware issues required > to shovel that many packets over the various buses, but the Linux overhead > of schedulling each of the 200 threads to take/send that data in > real-time. > > You might want to run iperf on each machine with nothing else going and > see just how many UDP packets of 160 bytes you can push between the > machines before packet loss starts. > > Gordon > > _______________________________________________ > > Sign up now for AstriCon 2007! September 25-28th. http://www.astricon.net/ > > --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 > > _______________________________________________ > > Sign up now for AstriCon 2007! September 25-28th. http://www.astricon.net/ > > --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
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