proxmoxtruenas-hdd KVM testing on CentOS Linux 7 via the Phoronix Test Suite. HDD SLOG SYNC=DISABLE: Processor: 2 x Common KVM (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org BIOS), Memory: 1 x 4096 MB RAM QEMU, Disk: 28GB, Graphics: bochsdrmfb, Monitor: QEMU Monitor OS: CentOS Linux 7, Kernel: 3.10.0-1160.el7.x86_64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: xfs, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 2805.25 |============================================== IOzone 3.465 Record Size: 2MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 2748.05 |============================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 946.39 |=============================================== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 103.85 |=============================================== IOzone 3.465 Record Size: 2MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 162.24 |=============================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 0.63 |================================================= IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 2583.96 |============================================== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better HDD SLOG SYNC=DISABLE . 9.28 |=================================================