zfs Intel Core i5-5300U testing with a LENOVO 20BUS29100 (JBET51WW 1.16 BIOS) and Intel HD 5500 3GB on Ubuntu 19.10 via the Phoronix Test Suite. ubuntu 19.10 with zfs: Processor: Intel Core i7-6500U @ 3.10GHz (2 Cores / 4 Threads), Motherboard: Purism Librem 15 v3 v3.0 (4.6-a86d1b-Purism-4 BIOS), Chipset: Intel Xeon E3-1200 v5/E3-1500, Memory: 16384MB, Disk: 500GB Samsung SSD 850, Graphics: Intel HD 520 3GB (1050MHz), Audio: Realtek ALC269VC, Network: Qualcomm Atheros AR9462 OS: Ubuntu 19.10, Kernel: 5.3.0-18-generic (x86_64), Desktop: GNOME Shell 3.34.1, Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.2.1, Compiler: GCC 9.2.1 20191008, File-System: zfs, Screen Resolution: 1920x1080 Samsung SSD 860: Processor: Intel Core i5-5300U @ 2.90GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BUS29100 (JBET51WW 1.16 BIOS), Chipset: Intel Broadwell-U-OPI, Memory: 2 x 8192 MB DDR3-1600MT/s, Disk: 250GB Samsung SSD 860 + 4001GB Expansion Desk + 1000GB 024 HN-M101MBB + 1000GB Expansion, Graphics: Intel HD 5500 3GB (900MHz), Audio: Intel Broadwell-U Audio, Monitor: C24F390, Network: Intel I218-LM + Intel 7260 OS: Ubuntu 19.10, Kernel: 5.3.0-19-generic (x86_64), Desktop: GNOME Shell 3.34.1, Display Server: X Server, OpenGL: 4.5 Mesa 19.2.1, Compiler: GCC 9.2.1 20191008, File-System: zfs, Screen Resolution: 1920x1080 SQLite 3.22 Timed SQLite Insertions Seconds < Lower Is Better ubuntu 19.10 with zfs . 53.87 |================================================ Samsung SSD 860 ....... 38.96 |=================================== FS-Mark 3.3 Test: 1000 Files, 1MB Size Files/s > Higher Is Better ubuntu 19.10 with zfs . 143.57 |=============================================== Samsung SSD 860 ....... 93.61 |=============================== FS-Mark 3.3 Test: 5000 Files, 1MB Size, 4 Threads Files/s > Higher Is Better ubuntu 19.10 with zfs . 176.37 |=============================================== Samsung SSD 860 ....... 157.87 |========================================== FS-Mark 3.3 Test: 4000 Files, 32 Sub Dirs, 1MB Size Files/s > Higher Is Better ubuntu 19.10 with zfs . 98.96 |================================================ Samsung SSD 860 ....... 91.20 |============================================ FS-Mark 3.3 Test: 1000 Files, 1MB Size, No Sync/FSync Files/s > Higher Is Better ubuntu 19.10 with zfs . 866.43 |=============================================== Samsung SSD 860 ....... 710.80 |======================================= Dbench 4.0 12 Clients MB/s > Higher Is Better ubuntu 19.10 with zfs . 412.24 |============================================= Samsung SSD 860 ....... 428.31 |=============================================== Dbench 4.0 1 Clients MB/s > Higher Is Better ubuntu 19.10 with zfs . 64.78 |========================================== Samsung SSD 860 ....... 74.73 |================================================ Compile Bench 0.6 Test: Compile MB/s > Higher Is Better ubuntu 19.10 with zfs . 998.10 |=============================================== Samsung SSD 860 ....... 770.95 |==================================== Compile Bench 0.6 Test: Initial Create MB/s > Higher Is Better ubuntu 19.10 with zfs . 125.31 |=============================================== Samsung SSD 860 ....... 103.65 |======================================= Compile Bench 0.6 Test: Read Compiled Tree MB/s > Higher Is Better ubuntu 19.10 with zfs . 814.93 |=============================================== Samsung SSD 860 ....... 428.53 |========================= PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better ubuntu 19.10 with zfs . 1908 |================================================= Samsung SSD 860 ....... 969 |=========================