Hi Robert Memory on the system is 1GB ram When I run free I get - [root@VE3LSR asterisk]# free total used free shared buffers cached Mem: 1034368 628924 405444 0 185776 289968 -/+ buffers/cache: 153180 881188 Swap: 1020116 0 1020116 [root@VE3LSR asterisk]# The attached drive is a SSD Clipping can occur randomly it is not tied to one station. Volume levels on these stations can vary. We have good bandwidth into out of the site. Co-located with an ISP. We are using the DMK fobs. Keith On 3/3/13 12:48 PM, "Robert a. Poff" <wb3awj@comcast.net> wrote:
Does the clipping occur usually on the same stations? Or sort of randomly?
In addition to CPU load, how much free memory do you have? I was told that you should have enough memory to not see ANY swapping. And found that to be a good rule of thumb. The time involved with disk access comes into play.
Keith Goobie <keith@goobie.org> wrote:
Good day All.
We have had our node up at VE3LSR / VE3UOR for a few months and we all have learned a lot about configuration and operation. It is ACID install and version id is 300.3.
On our asterisk system, we support three nodes:
27211 VE3UOR UHF repeater 29133 VE3LSR coupled through a RLC-DSP404 controller (often connected to VE3UPS and VE3UHN), and 29154 VA3LSR remote link for VE3LSR into VE3MUS not too active ad-hoc RF link.
I have also been testing out iaxrpt and the WebTransceiver clients.
I am on these systems and the results have been promising. I do notice some clipping on the audio on some stations. Initially I thought it was amplitude related over-driving the URI-FOB, but I am now beginning to suspect that it may be network related and in my research I hear the term jitter being used which if activated, adjust operation on the receiving end only.
It may be that the system is not powered enough to drive the three uri-fobs. CPU show about 25% busy. [root@VE3LSR etc]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 3 cpu MHz : 2992.898 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr bogomips : 5985.79
We do think that the system is sufficiently powered.
We are looking for comments & guidance. Are we expecting too much from the system having three fobs connected? We do have good bandwidth into and out of the site.
I am listening to other systems most not to busy, so I am not yet able to get a good reference point.
I have not dabbled with the codecs much, but have been focused on using ulaw. I am also testing with GSM lower bandwidth.
So as I said before, thoughts or suggestions are welcome.
Keith / VA3YC
-- keith@goobie.org Keith Goobie Richmond Hill, ON, CANADA