Comment 9 for bug 1698454

In light of my previous findings I did a dual boot install with 15.10 and 16.04. I put both installs on 4.3.6 mainline kernel and found that 15 was fine and 16 was not. I started looking at installed packages and tried to isolate some packages. After uninstalling several and rebooting I found that my performance went back up to normal. Long story short I found that uninstalling libnuma1 (which also uninstalls irqbalance) solved the problem after a reboot. FYI simply killing the irqbalance task did not solve the problem. I haven't taken time to troubleshoot further but it's something with numa/interrupt processing that is taking too long or something. Reinstalling irqbalance/libnuma1 causes the problem again. This is a single Xeon CPU on a dual CPU board.