zvol8k-ext4 ext4 VM on ZVOL 4k (legolas) zvol8k-ext4: Processor: 4 x QEMU Virtual 2.5+ @ 2.93GHz (4 Cores), Chipset: Intel 440FX- 82441FX PMC, Memory: 1 x 4096 MB RAM QEMU, Disk: 96GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Debian 8.6, Kernel: 4.7.5-xenU (x86_64), Compiler: GCC 4.9.2 + Clang 3.5.0-10, File-System: ext4, Screen Resolution: 800x600, System Layer: KVM QEMU AIO-Stress 0.21 Random Write MB/s > Higher Is Better zvol8k-ext4 . 1025.63 |======================================================== SQLite 3.8.10.2 Timed SQLite Insertions Seconds < Lower Is Better zvol8k-ext4 . 4.78 |=========================================================== FS-Mark 3.3 1000 Files, 1MB Size Files/s > Higher Is Better zvol8k-ext4 . 363.37 |========================================================= Dbench 4.0 12 Clients MB/s > Higher Is Better zvol8k-ext4 . 1797.13 |======================================================== Dbench 4.0 48 Clients MB/s > Higher Is Better zvol8k-ext4 . 1475.96 |======================================================== Dbench 4.0 128 Clients MB/s > Higher Is Better zvol8k-ext4 . 1494.15 |======================================================== Dbench 4.0 1 Clients MB/s > Higher Is Better zvol8k-ext4 . 539.90 |========================================================= IOzone 3.405 8GB Read Performance MB/s > Higher Is Better zvol8k-ext4 . 501.72 |========================================================= IOzone 3.405 8GB Write Performance MB/s > Higher Is Better zvol8k-ext4 . 757.90 |========================================================= Threaded I/O Tester 0.3.3 64MB Random Read - 32 Threads MB/s > Higher Is Better zvol8k-ext4 . 9287.85 |======================================================== Threaded I/O Tester 0.3.3 64MB Random Write - 32 Threads MB/s > Higher Is Better zvol8k-ext4 . 136.25 |========================================================= Compile Bench 0.6 Test: Compile MB/s > Higher Is Better zvol8k-ext4 . 797.65 |========================================================= Compile Bench 0.6 Test: Initial Create MB/s > Higher Is Better zvol8k-ext4 . 187.10 |========================================================= Compile Bench 0.6 Test: Read Compiled Tree MB/s > Higher Is Better zvol8k-ext4 . 647.62 |========================================================= Unpacking The Linux Kernel linux-2.6.32.tar.bz2 Seconds < Lower Is Better zvol8k-ext4 . 11.43 |========================================================== PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better zvol8k-ext4 . 4262 |=========================================================== Gzip Compression 2GB File Compression Seconds < Lower Is Better zvol8k-ext4 . 17.16 |========================================================== Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better zvol8k-ext4 . 12333.95 |=======================================================