Hi Mike, See Rhys post on that: http://www.rdoxenham.com/?p=275
HTH On Sat, Jun 14, 2014 at 6:01 PM, Mike Spreitzer <[email protected]> wrote: > Suppose I have an OpenStack undercloud, deployed on some Intel Xeon > E5-2670 boxes running Ubuntu 12.04. In /proc/cpuinfo I see the following > flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat > pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb > rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology > nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 > ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt > tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts > dtherm tpr_shadow vnmi flexpriority ept vpid. > > Suppose I create a VM in that undercloud, and use DevStack to install > OpenStack overcloud inside that VM. Suppose I create some VMs in that > overcloud. Now I am doing nested virtualization. I am told the speed with > which the overcloud VMs run can vary greatly, depending on certain > configuration details. What do I need to do to get my overcloud to create > fast VMs? > > Following are a couple of remarks I got from one source; do they look > right? > > > > > > > > > > *For Ubuntu host, you may try add/replace this line in /etc/modules if it > is an Intel box: options kvm-intel nested=1 If the host machine is a AMD > box, you don't have to specify the 'nested=1' parameter. The second option > for nova.conf can be added directly to the [DEFAULT] section, if it is not > there. This is also meant for the 'physical' host. libvirt_cpu_mode = > host-passthrough* > > > Thanks, > Mike > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : [email protected] > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > >
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