On 24 Jul 2015, at 07:34, Mohamed Lrhazi <Mohamed.Lrhazi@georgetown.edu> wrote:
What can I do next? to further zoom in on the root cause? Or is this pretty clearly CPU starvation? just add more VMs ?
It doesn’t sound like CPU starvation… what is the load average before/while/after this is going on (and how many CPU’s does the guest have)? What state is the radius process in when it is frozen (ps aux | grep radiusd, look at the STAT column). Run freeradius under strace (strace -Ff <radius command>). Is it waiting on a syscall? Which? Does FreeRADIUS respond to radmin commands while it is seemingly frozen? What hypervisor is in use? Regards, Adam Bishop gpg: 0x6609D460 jisc.ac.uk Jisc is a registered charity (number 1149740) and a company limited by guarantee which is registered in England under Company No. 5747339, VAT No. GB 197 0632 86. Jisc’s registered office is: One Castlepark, Tower Hill, Bristol, BS2 0JA. T 0203 697 5800. Jisc Services Limited is a wholly owned Jisc subsidiary and a company limited by guarantee which is registered in England under company number 2881024, VAT number GB 197 0632 86. The registered office is: One Castle Park, Tower Hill, Bristol BS2 0JA. T 0203 697 5800.