Hi, I have a trivial setup on a 2.4GHz Xeon Dell PE 1750 SCSI machine
dealing with 4 ports of E1 in an 'inline PBX' arrangement.
My extensions.conf is simply:
[general]
static=yes
writeprotect=yes
[frompstn]
exten => _31.,1,Dial(Zap/g2/${EXTEN})
exten => _31.,2,Congestion
[fromaxxess]
exten => _13.,1,Dial(SIP/${EXTEN},,h)
exten => _13.,2,Congestion
exten => _31.,1,Dial(Zap/g2/${EXTEN})
exten => _31.,2,Congestion
include => outbound
[outbound]
exten => _X.,1,Dial(Zap/g1/${EXTEN})
exten => _X.,2,Congestion
We have a full 30-channel PRI and a 4-channel partial PRI and are
experiencing load spikes that I can't find the source of.
The machine Debian sarge on the default 2.6.8-2-686 kernel, and no other
daemons are running than sshd.
The machine is doing no IP work - purely TDM, yet on a Xeon 2.4GHz
machine, the load average is sitting at 0.6 with 40 active Zap channels
(i.e. 20 live calls) and will randomly jump to 2 (with call quality
starting to stutter)
A few seconds of vmstat:
procs -----------memory---------- ---swap-- -----io---- --system--
----cpu----
r b swpd free buff cache si so bi bo in cs us sy
id wa
7 0 0 223560 1276 223040 0 0 3 10 83 94 1 2
97 0
0 0 0 223552 1284 223040 0 0 0 16 5128 3461 1 0
98 1
0 0 0 223552 1284 223040 0 0 0 0 5094 3319 10 9
81 0
0 0 0 223552 1284 223040 0 0 0 16 5130 2955 1 10
89 0
0 0 0 223552 1292 223040 0 0 0 60 5121 2918 0 1
97 2
0 0 0 223552 1292 223040 0 0 0 0 5031 2936 1 0
99 0
Does this sound about normal for what is just shuffling data between
ports of the Sangoma A104? I want to record the call data with the
'Monitor' application but this just causes the load to increase even
more (even though 'hdparm' shows 70MB/sec disk transfer with low
user+system CPU usage)
/proc/interrupts is
CPU0
0: 423253622 IO-APIC-edge timer
1: 175 IO-APIC-edge i8042
9: 0 IO-APIC-level acpi
11: 0 IO-APIC-level ohci_hcd
12: 58 IO-APIC-edge i8042
15: 13 IO-APIC-edge ide1
177: 533330 IO-APIC-level ioc0
185: 29 IO-APIC-level ioc1
193: 1311243931 IO-APIC-level wanpipe1, wanpipe2, wanpipe3, wanpipe4
201: 13289965 IO-APIC-level eth0
217: 5420038 IO-APIC-level eth2
NMI: 0
LOC: 423311408
ERR: 0
MIS: 0
Help! :)
Cheers,
Gavin.
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