> Hi, > > for the last week we have seen strange load issues on our Cyrus server. > All > of a sudden the load increases to several thousands, user CPU goes down to > basically zero, system CPU spikes. In the past we've had trouble with poor > I/O performance, but that went along with an increase in Wait I/O. We > don't > see that now. vmstat shows a massive increase in context switches. When > the > system reaches this state, all we can do is restart Cyrus or reboot the > machine if that doesn't work anymore. > > I'm attaching a Ganglia screenshot that shows the problem clearly. When > the > problem exists, there's not much we can do to analyze it. A colleague > suggested that what we see could be related to this bug: > > https://bugzilla.cyrusimap.org/show_bug.cgi?id=3744 > > It was reported for 2.4.16, and it sounds as if it has been fixed, but is > that fix really part of 2.4.17? Any other ideas? Is this a physical host or running virtualized? Simon ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
