On 13 Nov 2013, at 18:29, Mike Diehl <mdiehlena...@gmail.com> wrote: > I've been seeing some strangeness lately on my 10.2.1 server. It's > gotten to the point that a few times each day, I see masses of SIP > clients becoming unreachable. They're not all on the same network, > and we don't see any calls drop. In a few seconds, they all come > back. > I don't think it's a connectivity issue because we don't drop calls, > and the endpoints aren't on the same networks. We don't see excessive > CPU load when it happens. > It does SEEM to happen most right after someone accesses their voicemail.
We saw this happen on a 1.4 server a couple of years ago shortly after 2am each day. It was only after a study of the cron schedule we narrowed it down to a number of rsync backup jobs which were run at that time. As in your case, it wasn't a connectivity or bandwidth issue - in the end we put it down to a disk I/O bottleneck. It might be worth running something like iostat on your box to see if you see a spike in iowait as voicemail is being checked. We resolved it simply by rate limiting our rsync jobs. In your case with a busy database, you might want to look at your MySQL indexes and/or cache settings - this might be something worth asking about on the respective MySQL discussion groups as well as here. Kind regards, Chris -- This email is made from 100% recycled electrons -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
