Hi All, I have been running KVM on RHEL 5.x successfully, and I'm keen to upgrade to RHEL6.1 so I'm currently giving it a try. The host appears to work fine up until the point that I start a VM that was previously running fine on 5.x. At this point, the system becomes extremely laggy (noticeable delay between key presses and when they appear via SSH). I did notice that dstat starts reporting "missed X ticks" as the VM starts up and the system becomes sluggish. I have been monitoring the system via dstat/top, and load average, memory and CPU look fine. I did however notice the number of interrupts and context switches is a lot higher in RHEL6.1 than it was on RHEL5.x. I have not seen anything interesting in /var/log/messages. Any ideas? Happy to provide whatever info you like. Hardware: IBM x3850 X5 / 128G RAM Kernel: 2.6.32-131.6.1.el6 QEMU-KVM: 0.12.1.2-2.160.el6_1.6 Many thanks in advance. Gonzalo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
