zfs-write-back-unsafe
KVM testing on Ubuntu 18.04 via the Phoronix Test Suite.


zfs-wbu-benchmark: 

	Processor: Common KVM (4 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 10GB, Graphics: EFI VGA, Network: Red Hat Virtio device

	OS: Ubuntu 18.04, Kernel: 4.15.0-55-generic (x86_64), Compiler: GCC 7.5.0, File-System: ext4, Screen Resolution: 800x600, System Layer: KVM


IOzone 3.465
Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 2956.69 |==================================================


IOzone 3.465
Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 474.01 |===================================================


IOzone 3.465
Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 1369.07 |==================================================


IOzone 3.465
Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 210.30 |===================================================


IOzone 3.465
Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 560.78 |===================================================


IOzone 3.465
Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 614.24 |===================================================


IOzone 3.465
Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 470.33 |===================================================


IOzone 3.465
Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 478.39 |===================================================


IOzone 3.465
Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 3859.88 |==================================================


IOzone 3.465
Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 214.25 |===================================================


IOzone 3.465
Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 3367.31 |==================================================


IOzone 3.465
Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 1752.95 |==================================================


IOzone 3.465
Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 549.08 |===================================================


IOzone 3.465
Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 606.84 |===================================================


IOzone 3.465
Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 425.71 |===================================================


IOzone 3.465
Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 335.50 |===================================================


IOzone 3.465
Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 3962.71 |==================================================


IOzone 3.465
Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfs-wbu-benchmark . 408.33 |===================================================