Joerg Goltermann wrote: > I can confirm the problem here. We run some 5.2 VMs on ESXi 5.1 > and if the VM "freezes" the CPU runs on 100% but the system is > completely frozen. No disk IO, no keyboard, but kernel networking > seems to be ok. > > We had two VMs which crashed every 2 - 4 days after upgrading to 5.2. > After a long time of investigation I had the assumption that a problem > with the UVM / FFS softdep bufs causes the freeze. I saw a high, > increasing number of busymap bufs in systat. After a simple "sync" the > number drops down to 0 - 2 and increases again ...
We're running a 5.2 VM on ESXi 5.0 and experiencing somewhat similar problems since upgrading from 5.1. No total freezes, the keyboard is still working, but a reboot is needed to get the machine back in a usable state. I noticed the problems when the network wasn't working anymore. After bringing the interfaces down/up and flushing the routes, it looked good again but i then noticed that the clock hung completely. ntpd -s wouldn't work and the clock didn't count any further either. It just stuck. No log or kernel messages, unfortunately. The problems happened two times since upgrading in mid November, about every 2 weeks. We have softdep enabled too, I'll check the systat output when I'm back at work and let you know if I see the same. Regards Andre
