[asterisk-users] Optimizing Asterisk Environment

[Nick Khamis]

On the network side, Joshua had mentioned some network based encoding
solutions. We would be sold on this. What are some of the routers out
there that provide this capability with descent throughput? We were
considering Cisco 3745 with a NM-HDV2 which transcoding from G.711 to
G.729 handles 96 sessions. Not sure if this was the best bang for our
buck?

N.

On 3/25/13, Nick Khamis <symack at gmail.com> wrote:
> Hello Guys,
>
> Thank you so much for your response. We reran the sipp test:
>
> ./sipp -sf uac_pcap.xml -s 1001 vancouver.example.com -l 250
> -trace_err -mp 30000 -d 10000
>
> The scenario is the standard contact asterisk play some rtp media. On
> the asterisk, the echo test was used for the extension. This
> simulating a two way audio test.
>
> With ulimit set "ulimit -n 65535", and while the test was running:
>
> # top
> PID    PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+ COMMAND
> 16056 20   0 67568  25m 5812 S    36         0.7      0:36.90    asterisk
>
>
> #iftop (nice tool by the way :)
>
> vancouver.test.com => 192.168.2.100 1.75Mb    1.75Mb  1.75Mb
>                              <=                      1.69Mb  1.70Mb  1.70Mb
>
> # free -m
>                  total       used       free     shared    buffers
> cached
> Mem:          3735        518       3217          0         30        438
> -/+ buffers/cache:         48       3686
> Swap:         2047          0       2047
>
>
> # uptime
>
>  10:55:09 up 2 days,  1:45,  1 user,  load average: 0.44, 0.46, 0.23
>
> #ifconfig
>
> UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> RX packets:13222747 errors:0 dropped:0 overruns:1 frame:1
> TX packets:62311814 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
>
>
> # vmstat
> procs -----------memory---------- ---swap-- -----io---- -system--
> ----cpu----
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id
> wa
>  0  0      0 3293204  31824 450424    0    0     1     1   93    1  1  1 98
> 0
>
> # dmesg | grep -i duplex
> [   14.622293] e100 0000:00:02.0: eth3: NIC Link is Up 100 Mbps Full Duplex
>
> We are running this on a test server (x330) just to help us with the
> dimensioning process for now.
>
> The important results from SIPP:
>
>  Call-rate(length)               Port   Total-time  Total-calls
> Remote-host
> 10.0(10000 ms)/1.000s   5060     654.01 s         6450
> 192.168.2.10:5060(UDP)
>
> 0 calls (limit 250)                    Peak was 91 calls, after 9 s
>
>
> Elapsed Time       |    00:10:54:030
> Call Rate              |    9.862 cps
>
> Successful call     |        0       |     6450
> Failed call            |        0       |        0
>
> Is it safe to say that our test router is a lemon? Not sure if that's
> the bottleneck at this moment. Since only 36% of CPU is being
> utilized, and only 0.7% of memory. Are there any setting I should
> double check to run asterisk in "full capacity".
>
> Thank you so  much for your help,
>
> Nick.
>
> On 3/24/13, Steve Edwards <asterisk.org at sedwards.com> wrote:
>>> On Sat, Mar 23, 2013 at 09:33:38AM -0400, Nick Khamis wrote:
>>
>>>> We are getting some rather poor results (relative) with our Asterisk
>>>> setup.
>>
>> On Sun, 24 Mar 2013, Tzafrir Cohen wrote:
>>
>>> Run the system in "full capacity" and provide us some data. For
>>> starters:
>>>
>>> free -m
>>> uptime
>>> vmstat
>>
>> ethtool - make sure the interfaces are set correctly - look for 'Speed:
>> 1000Mb/s' and 'Duplex: Full'
>>
>> ifconfig - look at the error counters
>>
>> iftop - how many bits are you pushing in each direction
>>
>> I've got a 7 year old Xeon box with 2GB running Asterisk 1.2 that handles
>> 300 channels just fine. I suspect a modern box with a modern Asterisk
>> could do that in 'sleep mode.'
>>
>> --
>> Thanks in advance,
>> -------------------------------------------------------------------------
>> Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
>> Newline                                              Fax: +1-760-731-3000
>>
>> --
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>