Gordon Henderson wrote: > On Fri, 28 Dec 2007, Steve Totaro wrote: > > >> broadband Voice wrote: >> >>> On 12/27/07, *broadband Voice* <[EMAIL PROTECTED] >>> <mailto:[EMAIL PROTECTED]>> wrote: >>> >>> I am using Asterisk and A2billing Calling Card Platform and after >>> the 6th call the quality starts to degrade. The way it set up is >>> the user calls into the system then dial out so I have 12 channels >>> being used up but 6 active calls. Here are my specs Asterisk >>> SVN-branch-1.4-r79142 on a i686 running Linux Fedora 6, Pentium 4 >>> Hyper-Threading, 64 bit, 1GB of RAM, 80 GB Sata Drive, bandwidth 4 >>> Mbps (1300GB/Throughput) burstable to 100Mbps. >>> >>> I am planning on upgrading to Intel Core 2 Duo with a clock speed >>> of 1.8GHZ and 2GB Ram. Does anyone have similar situation or >>> advice? Thanks. >>> >>> >>> >> Your system should be able to handle that volume easily. >> >> What are you using for PSTN connectivity? >> >> I have heard of people having issues with Hyperthreading. That could be >> a problem, although I have never had any issues myself. >> >> What does top look like? >> >> When I had a similar issue (voice quality while running monitor on over >> seventy calls) I found a small Linux CLI app, I cannot remember the name >> of it but it would give IO stats (I think it may be named IOStat or >> something similar) and I could see right where the bottleneck was >> (obviously disc IO but I was able to see exactly where the breaking >> point was). That may help identify something. >> > > Try: > > vmstat 1 > > IIRC, iostat is a *BSD type utility, but it's been many years since I > touched BSD! > > It is possible to graph disk IO as well as network packet IO if required > using (eg) MRTG. > > Gordon > >
http://www.linuxquestions.org/linux/articles/Jeremys_Magazine_Articles/Hunting_I_O_Bottlenecks_with_iostat Thanks, Steve Totaro _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users