KVM: x86: increase recommended max vcpus to 160
Increase recommended max vcpus from 64 to 160 (tested internally at Red Hat). Signed-off-by: Marcelo Tosatti mtosa...@redhat.com diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 4610166..782d973 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -29,7 +29,7 @@ #include asm/msr-index.h #define KVM_MAX_VCPUS 254 -#define KVM_SOFT_MAX_VCPUS 64 +#define KVM_SOFT_MAX_VCPUS 160 #define KVM_MEMORY_SLOTS 32 /* memory slots that does not exposed to userspace */ #define KVM_PRIVATE_MEM_SLOTS 4 -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: KVM: x86: increase recommended max vcpus to 160
On Fri, 2012-02-03 at 12:28 -0200, Marcelo Tosatti wrote: Increase recommended max vcpus from 64 to 160 (tested internally at Red Hat). Signed-off-by: Marcelo Tosatti mtosa...@redhat.com Awesome! Would it be possible to share the benchmarks? -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: KVM: x86: increase recommended max vcpus to 160
On Fri, Feb 03, 2012 at 10:28:57AM -0500, Sasha Levin wrote: On Fri, 2012-02-03 at 12:28 -0200, Marcelo Tosatti wrote: Increase recommended max vcpus from 64 to 160 (tested internally at Red Hat). Signed-off-by: Marcelo Tosatti mtosa...@redhat.com Awesome! Would it be possible to share the benchmarks? Not sure. Shak? -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: KVM: x86: increase recommended max vcpus to 160
On 02/03/2012 10:55 AM, Marcelo Tosatti wrote: On Fri, Feb 03, 2012 at 10:28:57AM -0500, Sasha Levin wrote: On Fri, 2012-02-03 at 12:28 -0200, Marcelo Tosatti wrote: Increase recommended max vcpus from 64 to 160 (tested internally at Red Hat). Signed-off-by: Marcelo Tosattimtosa...@redhat.com Awesome! Would it be possible to share the benchmarks? Not sure. Shak? We have been using Linpack NxN but always hit a HW barriers even on bare metal http://software.intel.com/en-us/articles/running-the-hpl-benchmark-over-intel-mpi/?wapkw=(LINPACK+MPI) http://software.intel.com/en-us/articles/intel-math-kernel-library-linpack-download Shak -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
