[Asterisk-Users] (Semi-OT) QoS Question FTP Living with Asterisk

[Steve Totaro]

Kristian Kielhofner wrote:
> Steve Totaro wrote:
>> I have searched google and came up with too many options and packages 
>> that may or may not work for my needs, most articles seem to be for 
>> setting up routers.  Maybe someone on the list can give me some 
>> better insight.
>>
>> I have monitoring turned on my "shift eight (tm)" (Asterisk ;-)) box 
>> for all calls.  We have over one hundred agents and tons of 
>> recordings in wav format.  I also have a cron job that runs a script 
>> to mux the in and out files and ftp them to a NAS device and it runs 
>> every five minutes.
>> The NAS device and the * box are both directly connected to a Cisco 
>> Gigabit switch.  I have had complaints of calls fading in and out and 
>> also cutting off.  After reviewing the recordings, some of these 
>> complaints seem valid and I suspect the sheer bandwidth of the FTP 
>> traffic is causing the issues.  I also run nagios checks on the box 
>> and get ping warnings on a regular basis.
>> My question is, how can I throttle the FTP (Standard with dist) 
>> transfers using out of the box CentOS4.3 (or any easy to use, low 
>> learning curve package)?  I thought about FTPing the files at less 
>> frequent intervals but that just makes the issue less frequent but 
>> last longer.
>> I would like to accomplish throttling FTP on the Linux box with a 
>> solution that is not too elegant since this is a production machine 
>> in a busy call center.  If I cannot do it on the * box I guess my 
>> next step is to see if the Cisco Gigabit switch has any QoS 
>> functionality.
>> Thanks,
>> Steve
>> _______________________________________________
>
> Steve,
>
>     If you don't want to get too fancy, you should switch to using 
> rsync (if possible) and use the "--bwlimit" option.  If you MUST use 
> ftp, try using trickle:
>
> http://monkey.org/~marius/pages/?page=trickle
>
>     I haven't used it, but you should be able to call your FTP upload 
> binary (whatever it may be) with it and force a lower transfer speed.
>
> Let us know how it goes!
>
Trickle does not  seem to work with the IA64 procs :(