Alex Samad schrieb: > Hi
Hi Alex, > > I am new to asterisk so my suggestions might be a bit silly. > > Why not setup a iax2 connection bettween the asterisk servers, because > its a lower overhear and more efficient. We had changed from iax connections to sip connections cause we had timing problems with iax. Also in meetme and when a client send a fax over the connection. This problems has gone after changing to sip connects. >> what i can see is that the asterisk itself sometimes lag so no call can >> be started, but running calls wont be broken. >> >> in netstat -su i see a big amount of udp packet receive errors when it >> lags. Like 600 to 800 pakets per second. > > if you are seeing packet loss, have you check the stats on the cards and > the ports on the switch any sort of loss might indicate a faulty > card/port its not a network packet loss its in the kernel or asterisk itself. > you could also try some network testing with iperf by default it tests > udp. > > the other thought is keep going the way youwere add another nic card to > server a such that you have > > eth0 for your sip clients > eth1 for router server b > eth2 for router server c i´ve allready tried this, and the problem still occurs. > it would just take a bit of routing magic. The thing to watch then is > the bus these card are on if they share the same pci bus. But you are > not really moving around much data. > > Try linux-kernel mailing list or do a google for udp buffer tunning > from memory there is the kernel option which is the abs max, but the > program must also select a buffer amount which is usually the default > value which is not the max value. increase the max udp buffer size was just something i´ve found to try but i´ve set the default value to 512kB by now, maybe this will help. > another thing to look for (you haven't mentioned you nic type or kernel > version), but I had a realtek 8168b which would sort of work with the in > kernel driver (8111c) on any kernel < 2.6.28. After 2.6.28 the in kernel > driver worked really well. system would be under load packets would be > come corrupt system info: HP Proliant DL380 G5 2x Intel Xeon 2,3 GHZ quad core 6GB Ram Debian Lenny ver. 5.0.1 kernel: 2.6.26-1-amd64 I´ve recompiled with dont optimize and debug threads and when the asterisk hangs or lag i see in core show lock the following: ======================================================================= === Currently Held Locks ============================================== ======================================================================= === === <file> <line num> <function> <lock name> <lock addr> (times locked) === === Thread ID: 1092675920 (do_monitor started at [16595] chan_sip.c restart_monitor()) === ---> Lock #0 (chan_sip.c): MUTEX 16264 sipsock_read &netlock 0x7f6d0e9d0700 (1) === ------------------------------------------------------------------- and a second before everything comes fine again: ======================================================================= === Currently Held Locks ============================================== ======================================================================= === === <file> <line num> <function> <lock name> <lock addr> (times locked) === === Thread ID: 1092675920 (do_monitor started at [16595] chan_sip.c restart_monitor()) === ---> Lock #0 (chan_sip.c): MUTEX 16264 sipsock_read &netlock 0x7f6d0e9d0700 (1) === ---> Lock #1 (chan_sip.c): MUTEX 4728 find_call &p->lock 0x374ffd0 (1) === ---> Lock #2 (sched.c): MUTEX 220 ast_sched_add_variable &con->lock 0x1b2eee0 (1) === ------------------------------------------------------------------- === ======================================================================= maybe this is a bug? best regards steve _______________________________________________ -- 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
