Re: problems running many guests

[Avi Kivity <avi@qumranet.com>]

Karl Rister wrote:
> Hi
>
> I have been trying to do some testing of a large number of guests (72) on a 
> big multi-node IBM box (8 sockets, 32 cores, 128GB) and I am having various 
> issues with the guests.  I can get the guests to boot, but then I start to 
> have problems.  Some guests appear to stall doing I/O and some become 
> unresponsive and spin their single vcpu at 100%.
>   

One of the problems with these large boxes is that their TSCs are not 
synced across sockets; you may be hitting related issues.  Can you try 
configuring the guests not to use the tsc?

Also, if you are running on an old host kernel, you won't have 
smp_call_function_single() and there will be many broadcast IPIs.  
Please use a recent host kernel (kvm.git is best, though a bit bleeding 
edge).

-- 
error compiling committee.c: too many arguments to function


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