This is really encouraging, I'd like to try it on VMWare soon. > > On Wed, 1 Mar 2006, Nathan Hawkins wrote: > > It seems to work well on Xen without zaptel. Definitely > better results > > than my testing with Asterisk 1.2.1 and ztdummy. This is what I did: > <snipp> > > I used a checkout of 0.2-beta SVN-1470 running on dom3. I > ran a kernel > > compile with make -j8 in dom1 while makings calls through > OpenPBX in > > dom3. I used a Polycom 501 to call out to the PSTN. The > calls were SIP > > to our carrier. I had canreinvite=no. (We used to have > problems with > > Asterisk doing.) I made 5 simultaneous calls, and set them > all on hold > > with music playing. According to the display on the phone, jitter > > stayed around 8-12ms, which is pretty normal here. Music > sounded good. > > So I'd say the initial results from casual testing look > pretty good. I > > had audible timing problems just playing hold music on an > idle system > > with the Asterisk setup. > > Those are great results! > I don't know how xen handles scheduling but I'm always > careful with anything that might add latency to the > scheduling or timing. 1ms resolution is the minimum needed (a > little less can be accepted since jitterbuffers can usually > handle that).
I've not used Xen either. Does it allow you to assign "processor affinity" or preference in a multiprocessor system? > > Did you use the -p option to opbx (it makes it run with > higher priority)? > There is (or was) a setting in asterisk.conf to set the priority too. I haven't looked but assume they would remain valid in openpbx.conf. nofork=yes|no don't fork a background process (-f) console=yes|no load the Asterisk console (-c) highpriority=yes|no run with high priority (-p) initcrypto=yes|no initialize crypto at start (-i) nocolor=yes|no disable ANSI colors on the console (-n) dumpcore=yes|no dump a core file on failure (-g) quiet=yes|no run quietly (-q) -Nate _______________________________________________ Openpbx-users mailing list [email protected] http://lists.openpbx.org/mailman/listinfo/openpbx-users
