PostgreSQL on ZFS
mirrored zpool on 2x 128G SATA SSD, modified zfs settings: recordsize=32k, logbias=throughput, default zfs settings: sync=standard, ashift=12, no SLOG, no L2ARC


default: 

	Processor: AMD Ryzen 5 3600XT 6-Core @ 3.80GHz (6 Cores / 12 Threads), Motherboard: Gigabyte B550M DS3H (F11 BIOS), Chipset: AMD Starship/Matisse, Memory: 16GB, Disk: 500GB Western Digital WDS500G2B0C-00PXH0 + 2000GB Western Digital WDS200T2B0C-00PXH0 + 256GB Samsung SSD 850 + 2 x 128GB SAMSUNG SSD 830, Graphics: NVIDIA GeForce GTX 1660 SUPER 6GB, Audio: NVIDIA TU116 HD Audio, Network: Realtek RTL8111/8168/8411

	OS: Linuxmint 20.1, Kernel: 5.4.0-65-generic (x86_64), Desktop: Xfce, Display Server: X Server 1.20.9, Display Driver: NVIDIA, Vulkan: 1.2.155, Compiler: GCC 9.3.0, File-System: zfs, Screen Resolution: 1024x768

sync=disabled: 

	Processor: AMD Ryzen 5 3600XT 6-Core @ 3.80GHz (6 Cores / 12 Threads), Motherboard: Gigabyte B550M DS3H (F11 BIOS), Chipset: AMD Starship/Matisse, Memory: 16GB, Disk: 500GB Western Digital WDS500G2B0C-00PXH0 + 2000GB Western Digital WDS200T2B0C-00PXH0 + 256GB Samsung SSD 850 + 2 x 128GB SAMSUNG SSD 830, Graphics: NVIDIA GeForce GTX 1660 SUPER 6GB, Audio: NVIDIA TU116 HD Audio, Network: Realtek RTL8111/8168/8411

	OS: Linuxmint 20.1, Kernel: 5.4.0-65-generic (x86_64), Desktop: Xfce, Display Server: X Server 1.20.9, Display Driver: NVIDIA, Vulkan: 1.2.155, Compiler: GCC 9.3.0, File-System: zfs, Screen Resolution: 1024x768

recordsize=32k: 

	Processor: AMD Ryzen 5 3600XT 6-Core @ 3.80GHz (6 Cores / 12 Threads), Motherboard: Gigabyte B550M DS3H (F11 BIOS), Chipset: AMD Starship/Matisse, Memory: 16GB, Disk: 500GB Western Digital WDS500G2B0C-00PXH0 + 2000GB Western Digital WDS200T2B0C-00PXH0 + 256GB Samsung SSD 850 + 2 x 128GB SAMSUNG SSD 830, Graphics: NVIDIA GeForce GTX 1660 SUPER 6GB, Audio: NVIDIA TU116 HD Audio, Network: Realtek RTL8111/8168/8411

	OS: Linuxmint 20.1, Kernel: 5.4.0-65-generic (x86_64), Desktop: Xfce, Display Server: X Server 1.20.9, Display Driver: NVIDIA, Vulkan: 1.2.155, Compiler: GCC 9.3.0, File-System: zfs, Screen Resolution: 1024x768

recordsize=32k + logbias=throughput: 

	Processor: AMD Ryzen 5 3600XT 6-Core @ 3.80GHz (6 Cores / 12 Threads), Motherboard: Gigabyte B550M DS3H (F11 BIOS), Chipset: AMD Starship/Matisse, Memory: 16GB, Disk: 500GB Western Digital WDS500G2B0C-00PXH0 + 2000GB Western Digital WDS200T2B0C-00PXH0 + 256GB Samsung SSD 850 + 2 x 128GB SAMSUNG SSD 830, Graphics: NVIDIA GeForce GTX 1660 SUPER 6GB, Audio: NVIDIA TU116 HD Audio, Network: Realtek RTL8111/8168/8411

	OS: Linuxmint 20.1, Kernel: 5.4.0-65-generic (x86_64), Desktop: Xfce, Display Server: X Server 1.20.9, Display Driver: NVIDIA, Vulkan: 1.2.155, Compiler: GCC 9.3.0, File-System: zfs, Screen Resolution: 1024x768


PostgreSQL pgbench 13.0
Scaling Factor: 1 - Clients: 1 - Mode: Read Write
TPS > Higher Is Better
default ............................. 170  |=
sync=disabled ....................... 4792 |===================================
recordsize=32k ...................... 172  |=
recordsize=32k + logbias=throughput . 153  |=


PostgreSQL pgbench 13.0
Scaling Factor: 1 - Clients: 1 - Mode: Read Write - Average Latency
ms < Lower Is Better
default ............................. 5.903 |===============================
sync=disabled ....................... 0.209 |=
recordsize=32k ...................... 5.830 |==============================
recordsize=32k + logbias=throughput . 6.556 |==================================


PostgreSQL pgbench 13.0
Scaling Factor: 1 - Clients: 100 - Mode: Read Write
TPS > Higher Is Better
default ............................. 173  |=
sync=disabled ....................... 4267 |===================================
recordsize=32k ...................... 172  |=
recordsize=32k + logbias=throughput . 153  |=


PostgreSQL pgbench 13.0
Scaling Factor: 1 - Clients: 100 - Mode: Read Write - Average Latency
ms < Lower Is Better
default ............................. 578.26 |=============================
sync=disabled ....................... 23.45  |=
recordsize=32k ...................... 582.42 |=============================
recordsize=32k + logbias=throughput . 660.77 |=================================


PostgreSQL pgbench 13.0
Scaling Factor: 1000 - Clients: 1 - Mode: Read Write
TPS > Higher Is Better
default ............................. 92   |===
sync=disabled ....................... 1003 |===================================
recordsize=32k ...................... 99   |===
recordsize=32k + logbias=throughput . 104  |====


PostgreSQL pgbench 13.0
Scaling Factor: 1000 - Clients: 1 - Mode: Read Write - Average Latency
ms < Lower Is Better
default ............................. 10.985 |=================================
sync=disabled ....................... 1.011  |===
recordsize=32k ...................... 10.073 |==============================
recordsize=32k + logbias=throughput . 9.597  |=============================


PostgreSQL pgbench 13.0
Scaling Factor: 1000 - Clients: 100 - Mode: Read Write
TPS > Higher Is Better
default ............................. 784  |==========================
sync=disabled ....................... 1016 |==================================
recordsize=32k ...................... 997  |=================================
recordsize=32k + logbias=throughput . 1053 |===================================


PostgreSQL pgbench 13.0
Scaling Factor: 1000 - Clients: 100 - Mode: Read Write - Average Latency
ms < Lower Is Better
default ............................. 129.62 |=================================
sync=disabled ....................... 101.42 |==========================
recordsize=32k ...................... 103.14 |==========================
recordsize=32k + logbias=throughput . 95.87  |========================