compilebench-dirops Intel Core i5-6500 testing with a HP 8054 (N01 Ver. 02.18 BIOS) and inteldrmfb on NixOS 18.03.git.c8eb3b1 via the Phoronix Test Suite. noparallel-dirops: Processor: Intel Core i5-6500 @ 3.60GHz (4 Cores), Motherboard: HP 8054 (N01 Ver. 02.18 BIOS), Memory: 16384MB, Disk: 500GB TOSHIBA DT01ACA0, Graphics: inteldrmfb (1050MHz), Audio: Realtek ALC221 OS: NixOS 18.03.git.c8eb3b1, Kernel: 4.14.14 (x86_64), Desktop: Xfce, Compiler: GCC 7.2.0, File-System: fuseblk, Screen Resolution: 1920x1200 parallel-dirops: Processor: Intel Core i5-6500 @ 3.60GHz (4 Cores), Motherboard: HP 8054 (N01 Ver. 02.18 BIOS), Memory: 16384MB, Disk: 500GB TOSHIBA DT01ACA0, Graphics: inteldrmfb (1050MHz), Audio: Realtek ALC221 OS: NixOS 18.03.git.c8eb3b1, Kernel: 4.14.14 (x86_64), Desktop: Xfce, Compiler: GCC 7.2.0, File-System: zfs, Screen Resolution: 1920x1200 Compile Bench 0.6 Test: Read Compiled Tree MB/s > Higher Is Better noparallel-dirops . 337.00 |===================== parallel-dirops ... 827.46 |===================================================