twemlowfreenas Running pts/iozone-1.9.4 via the Phoronix Test Suite. arc_cache: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware no_arc_cache: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware no_arc_more_tests: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware no_arc_1: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware no_arc_2: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware no_arc_3: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware arc_1: Processor: 2 x Intel Core i3-3217U @ 1.80GHz (2 Cores), Motherboard: Intel 440BX, Chipset: Intel 440BX/ZX/DX, Memory: 1 x 2048 MB DRAM, Disk: 21GB Virtual disk, Graphics: VMware SVGA II, Network: VMware VMXNET3 OS: Ubuntu 18.04, Kernel: 4.15.0-36-generic (x86_64), File-System: ext4, Screen Resolution: 1176x885, System Layer: VMware IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better arc_cache .... 4120.05 |================================================ no_arc_cache . 4676.10 |======================================================= no_arc_1 ..... 3593.72 |========================================== no_arc_2 ..... 3758.40 |============================================ no_arc_3 ..... 3075.63 |==================================== arc_1 ........ 3871.20 |============================================== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better arc_cache .... 70.72 |======================================= no_arc_cache . 94.69 |==================================================== no_arc_1 ..... 99.83 |======================================================= no_arc_2 ..... 70.56 |======================================= no_arc_3 ..... 101.98 |======================================================== arc_1 ........ 99.06 |====================================================== IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_more_tests . 99.39 |================================================== no_arc_1 .......... 100.48 |=================================================== no_arc_2 .......... 95.70 |================================================= no_arc_3 .......... 94.43 |================================================ arc_1 ............. 96.20 |================================================= IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_more_tests . 98.58 |================================================= no_arc_1 .......... 93.57 |=============================================== no_arc_2 .......... 96.81 |================================================ no_arc_3 .......... 102.32 |=================================================== arc_1 ............. 98.00 |================================================= IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_more_tests . 90.25 |================================================ no_arc_1 .......... 93.26 |================================================= no_arc_2 .......... 96.89 |=================================================== no_arc_3 .......... 97.41 |==================================================== arc_1 ............. 98.24 |==================================================== IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_more_tests . 90.05 |=============================================== no_arc_1 .......... 94.05 |================================================= no_arc_2 .......... 97.93 |=================================================== no_arc_3 .......... 93.31 |================================================= arc_1 ............. 99.18 |==================================================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_more_tests . 101.64 |=================================================== no_arc_1 .......... 99.55 |================================================== no_arc_2 .......... 101.95 |=================================================== no_arc_3 .......... 92.10 |============================================== arc_1 ............. 99.08 |================================================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_more_tests . 90.63 |================================================ no_arc_1 .......... 98.82 |==================================================== no_arc_2 .......... 95.83 |================================================== no_arc_3 .......... 95.96 |================================================== arc_1 ............. 98.10 |==================================================== IOzone 3.465 Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 99.79 |=========================================================== no_arc_2 . 102.14 |============================================================ no_arc_3 . 93.76 |======================================================= arc_1 .... 94.96 |======================================================== IOzone 3.465 Record Size: 1MB - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 95.67 |=========================================================== no_arc_2 . 94.80 |=========================================================== no_arc_3 . 98.83 |============================================================= arc_1 .... 95.84 |=========================================================== IOzone 3.465 Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 99.71 |=========================================================== no_arc_2 . 100.66 |============================================================ no_arc_3 . 99.11 |=========================================================== arc_1 .... 100.52 |============================================================ IOzone 3.465 Record Size: 4Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 97.32 |========================================================== no_arc_2 . 100.95 |============================================================ no_arc_3 . 101.08 |============================================================ arc_1 .... 100.09 |=========================================================== IOzone 3.465 Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 94.26 |========================================================== no_arc_2 . 98.82 |============================================================= no_arc_3 . 97.04 |============================================================ arc_1 .... 97.59 |============================================================ IOzone 3.465 Record Size: 1MB - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 92.55 |========================================================= no_arc_2 . 98.52 |============================================================= no_arc_3 . 88.59 |======================================================= arc_1 .... 96.55 |============================================================ IOzone 3.465 Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 96.02 |============================================================ no_arc_2 . 94.66 |=========================================================== no_arc_3 . 97.84 |============================================================= arc_1 .... 98.02 |============================================================= IOzone 3.465 Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 94.31 |=========================================================== no_arc_2 . 94.13 |========================================================== no_arc_3 . 98.23 |============================================================= arc_1 .... 93.48 |========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 102.53 |============================================================ no_arc_2 . 102.71 |============================================================ no_arc_3 . 97.83 |========================================================= arc_1 .... 100.48 |=========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 8GB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 101.21 |============================================================ no_arc_2 . 99.09 |=========================================================== no_arc_3 . 97.64 |========================================================== arc_1 .... 99.61 |=========================================================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 1247.64 |=========================================================== no_arc_2 . 1245.71 |=========================================================== no_arc_3 . 681.05 |================================ arc_1 .... 1238.08 |=========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 102.14 |============================================================ no_arc_2 . 98.43 |========================================================== no_arc_3 . 86.99 |=================================================== arc_1 .... 97.92 |========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 8GB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 99.02 |============================================================= no_arc_2 . 97.13 |============================================================ no_arc_3 . 92.70 |========================================================= arc_1 .... 98.20 |============================================================ IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 91.47 |========================================================== no_arc_2 . 63.55 |======================================== no_arc_3 . 94.28 |============================================================ arc_1 .... 96.28 |============================================================= IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better no_arc_1 . 3612.53 |======================================================== no_arc_2 . 3617.98 |======================================================== no_arc_3 . 2696.70 |========================================== arc_1 .... 3804.52 |=========================================================== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better no_arc_1 . 100.01 |========================================================== no_arc_2 . 102.92 |============================================================ no_arc_3 . 102.90 |============================================================ arc_1 .... 99.06 |==========================================================