ryzen-latency
KVM testing on Ubuntu 20.04 via the Phoronix Test Suite.


no affinity: 

	Processor: AMD Ryzen 7 1700 Eight-Core (7 Cores), Motherboard: QEMU Standard PC (Q35 + ICH9 2009) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 82G33/G31/P35/P31 + ICH9, Memory: 4096MB, Disk: 129GB QEMU HDD, Graphics: bochs-drmdrmfb, Audio: Intel 82801I, Monitor: QEMU Monitor, Network: Red Hat Virtio device

	OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM

aff core 0-7: 

	Processor: AMD Ryzen 7 1700 Eight-Core (7 Cores), Motherboard: QEMU Standard PC (Q35 + ICH9 2009) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 82G33/G31/P35/P31 + ICH9, Memory: 4096MB, Disk: 129GB QEMU HDD, Graphics: bochs-drmdrmfb, Audio: Intel 82801I, Monitor: QEMU Monitor, Network: Red Hat Virtio device

	OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM

aff core 8-15: 

	Processor: AMD Ryzen 7 1700 Eight-Core (7 Cores), Motherboard: QEMU Standard PC (Q35 + ICH9 2009) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 82G33/G31/P35/P31 + ICH9, Memory: 4096MB, Disk: 129GB QEMU HDD, Graphics: bochs-drmdrmfb, Audio: Intel 82801I, Monitor: QEMU Monitor, Network: Red Hat Virtio device

	OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM

no aff server load: 

	Processor: AMD Ryzen 7 1700 Eight-Core (7 Cores), Motherboard: QEMU Standard PC (Q35 + ICH9 2009) (rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org BIOS), Chipset: Intel 82G33/G31/P35/P31 + ICH9, Memory: 4096MB, Disk: 129GB QEMU HDD, Graphics: bochs-drmdrmfb, Audio: Intel 82801I, Monitor: QEMU Monitor, Network: Red Hat Virtio device

	OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM


Core-Latency
Average Latency Between CPU Cores
ns < Lower Is Better
no affinity ........ 125.68 |========================
aff core 0-7 ....... 166.61 |================================
aff core 8-15 ...... 162.79 |===============================
no aff server load . 259.04 |==================================================