On 16/10/2013 17:19, Michał Madziar wrote:
On 2013-10-16 14:42, Gerry O'Brien wrote:
Hi,
Do you know if the CPU parameter has any effect on the amount of
real cpu used, e.g. if I set the CPU parameter to 0.1 will this limit
the actual cpu usage?
libvirt uses cgroups, so yes, it does.
cgroups do not seem to be enabled with kvm. Am I correct in assuming this?
Also, can the monitor driver be configured to report multiples of
memory and allow memory overcommitment in the same way?
Just assign whatever you want to $total_memory in kvm.rb, but keep in
mind that if ballooned/deduplicated pages will start to differ either
swap will be used (which will probably kill the host) or oomkiller will
kick in.
Example:
$total_cpu = 2000
$free_cpu = $total_cpu - $used_cpu
$total_memory = $total_memory.to_i+$free_memory.to_i
$free_memory = $total_memory - $used_memory.to_i
print_info("HYPERVISOR","kvm")
#...
Dashboard charts will look strange but it seems to work.
Hi,
This didn't work for me. I'm running 4.2. The scheduler has a capacity
test (see below). Any idea where the code for "get_requirements" lives?
// -----------------------------------------------------------------
// Check host capacity
// -----------------------------------------------------------------
vm->get_requirements(vm_cpu,vm_memory,vm_disk);
if (host->test_capacity(vm_cpu,vm_memory,vm_disk) == true)
{
vm->add_host(host->get_hid());
n_hosts++;
}
else
{
ostringstream oss;
oss << "VM " << oid << ": Host " << host->get_hid()
<< " filtered out. Not enough capacity.";
NebulaLog::log("SCHED",Log::DEBUG,oss);
}
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--
Gerry O'Brien
Systems Manager
School of Computer Science and Statistics
Trinity College Dublin
Dublin 2
IRELAND
00 353 1 896 1341
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