fio_rr_paio_nobuf_yesdir_4kblk Intel Core i7-4770K testing with a ASRock Z87 Extreme6 (P1.40 BIOS) and MSI NVIDIA GeForce GTX 1080 8GB on Ubuntu 20.10 via the Phoronix Test Suite. testin: Processor: Intel Core i7-4770K @ 3.90GHz (4 Cores / 8 Threads), Motherboard: ASRock Z87 Extreme6 (P1.40 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 2 x 8192 MB DDR3-1333MT/s F3-1600C9-8GXM, Disk: 250GB Samsung SSD 840 + 256GB Samsung SSD 850, Graphics: MSI NVIDIA GeForce GTX 1080 8GB (1683/5005MHz), Audio: Realtek ALC1150, Monitor: LG Ultra HD, Network: Intel I217-V + Intel I211 OS: Ubuntu 20.10, Kernel: 5.8.0-33-generic (x86_64), Desktop: GNOME Shell 3.38.1, Display Server: X Server 1.20.9, Display Driver: NVIDIA 450.80.02, OpenGL: 4.6.0, Compiler: GCC 10.2.0, File-System: ext4, Screen Resolution: 3840x2160 Flexible IO Tester 3.16 Type: Random Read - IO Engine: POSIX AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better testin . 40.3 |================================================================ Flexible IO Tester Type: Random Read - IO Engine: POSIX AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better testin . 10300 |===============================================================