Had a good question for the list, it seems whenever I work in an Asterisk console or on the machine normally I get jitters on any audio going through it. Especially if you did file copies or a 'ps ax' for example. I was wondering if there was a proper way to 'nice' the asterisk proc's? Cisco does this for example to it's "EXEC" and icmp processes, I tried reniceing the asterisk processes with very bad results, especially when I/O (voicemail, etc) comes into play. I'm not swapping out or anything, ideas?
Since VoIP is a real time activity, simple "nice" really isn't enough. What you should do is mark the Asterisk proccess as a real time task for the Linux kernel to schedule accordingly. You can do this with Asterisk by passing the "-p" option to the Asterisk command line.
A warning is due here: real time priority scheduled tasks are not something to be toyed with. You need to be root to be able to turn on this feature (meaning you have to be running Asterisk as root). A bug in Asterisk, a problem with mpg123 or a red alert on a FXO card can very well leave your system completly non responsive - so use with care.
Having said that, I've been running an Asterisk server on a machine which is also used as SOHO firewall and file server for year now and it works great.
Hope this helps, Gilad _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
