Guest Testing Xeon E3-1280v5 Testing for a future article on Phoronix. Linux 4.15-rc5: Processor: 8 x Intel Core (Skylake) @ 3.70GHz (8 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 12288MB, Disk: 54GB, Graphics: Red Hat QXL paravirtual graphic card, Audio: QEMU Generic, Network: Red Hat Virtio device OS: Ubuntu 17.10, Kernel: 4.15.0-rc5 (x86_64) 20180103, Desktop: GNOME Shell 3.26.1, Display Server: Wayland, OpenGL: 3.3 Mesa 17.2.2 (LLVM 5.0 256 bits), Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM KVM Guest With KPTI: Processor: 8 x Intel Core (Skylake) @ 3.70GHz (8 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 12288MB, Disk: 54GB, Graphics: llvmpipe 12032MB, Audio: QEMU Generic, Network: Red Hat Virtio device OS: Ubuntu 17.10, Kernel: 4.15.0-rc6-ptipts4 (x86_64) 20180103, Desktop: GNOME Shell 3.26.1, Display Server: Wayland, OpenGL: 3.3 Mesa 17.2.2 (LLVM 5.0 256 bits), Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM Go Benchmarks Test: json Nanoseconds/Operation < Lower Is Better Linux 4.15-rc5 ...... 13938186 |=============================================== KVM Guest With KPTI . 14079516 |=============================================== Go Benchmarks Test: garbage Nanoseconds/Operation < Lower Is Better Linux 4.15-rc5 ...... 2758506 |================================================ KVM Guest With KPTI . 2729587 |=============================================== Cpuminer-Opt Algorithm: deep Hash Speed > Higher Is Better Linux 4.15-rc5 ...... 2933.04 |================================================ KVM Guest With KPTI . 2939.57 |================================================ Cpuminer-Opt Algorithm: cryptonight Hash Speed > Higher Is Better Linux 4.15-rc5 ...... 123.91 |================================================ KVM Guest With KPTI . 125.97 |================================================= x264 2017-09-08 H.264 Video Encoding Frames Per Second > Higher Is Better Linux 4.15-rc5 ...... 183.55 |================================================= KVM Guest With KPTI . 181.63 |================================================ Timed Linux Kernel Compilation 4.13 Time To Compile Seconds < Lower Is Better Linux 4.15-rc5 ...... 133.41 |================================================= KVM Guest With KPTI . 132.47 |================================================= C-Ray 1.1 Total Time Seconds < Lower Is Better Linux 4.15-rc5 ...... 22.33 |================================================== KVM Guest With KPTI . 22.26 |================================================== LAME MP3 Encoding 3.99.5 WAV To MP3 Seconds < Lower Is Better Linux 4.15-rc5 ...... 9.53 |=================================================== KVM Guest With KPTI . 9.38 |================================================== FFmpeg 3.3.3 H.264 HD To NTSC DV Seconds < Lower Is Better Linux 4.15-rc5 ...... 6.89 |=================================================== KVM Guest With KPTI . 6.94 |=================================================== OpenSSL 1.0.1g RSA 4096-bit Performance Signs Per Second > Higher Is Better Linux 4.15-rc5 ...... 691.53 |================================================= KVM Guest With KPTI . 693.90 |================================================= PostgreSQL pgbench 10.0 Scaling: Buffer Test - Test: Normal Load - Mode: Read Write TPS > Higher Is Better Linux 4.15-rc5 ...... 2271.93 |=============================================== KVM Guest With KPTI . 2336.62 |================================================ PostgreSQL pgbench 10.0 Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Write TPS > Higher Is Better Linux 4.15-rc5 ...... 3180.50 |================================================ KVM Guest With KPTI . 3201.09 |================================================ Redis 3.0.1 Test: GET Requests Per Second > Higher Is Better Linux 4.15-rc5 ...... 3198432.67 |============================================= KVM Guest With KPTI . 2868842.83 |======================================== Redis 3.0.1 Test: SET Requests Per Second > Higher Is Better Linux 4.15-rc5 ...... 2149604.94 |============================================= KVM Guest With KPTI . 2079680.46 |============================================ Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better Linux 4.15-rc5 ...... 34618.23 |============================================= KVM Guest With KPTI . 35805.97 |===============================================