[Asterisk-Users] update - 512 Simultaneous Calls with Digital Recording

[Isaac Xiao]

Matthew, thanks for your feedback and advice.
> what I actually experienced was the complete breakdown of Asterisk at 
> around 60 concurrent recordings without it (the reality).

The drive for saving your voice recordings is the same as your OS
(Asterisk)? What do you think that save the voice recordings to a
dedicated drive rather than the one which Asterisk program (OS) locates?
I also think about using GSM format (Monitor(gsm,${CALLFILENAME}, mb))
rather than WAV, PCM. In this case, it will use more CPU, but I/O of
hard disk is reduced dramatically as you mentioned that it is I/O
bottleneck issue, not CPU (In my case, I want to use P4 Dual core CPU or
extreme edition). In order to reduce the CPU usage, we can have two leg
files mixed after peak time.

Matt mentioned about fragmented free space. I googled about Linux
defragment topic. People always talk about that Linux doesn't need to
defragment, it can handle it by itself very well. Not sure how true it
is.

I am looking a solution to record expanding simultaneous calls in the
future in a call centre which accepts calls from our global branches. If
I find the good solution, I definitely post it to the community.

Cheers,
Isaac Xiao