zfs
Xen 4.1.3 Hypervisor testing on Debian 7.0 via the Phoronix Test Suite.


2GB larc: 

	Processor: AMD Opteron 6348 @ 2.80GHz (4 Cores), Memory: 4096MB, Disk: 4001GB HGST HDS724040AL

	OS: Debian 7.0, Kernel: 3.9.4-2013061402 (x86_64), Compiler: GCC 4.7, File-System: zfs, System Layer: Xen 4.1.3 Hypervisor

2GB larc 512MB ZIL: 

	Processor: AMD Opteron 6348 @ 2.80GHz (4 Cores), Memory: 4096MB, Disk: 4001GB HGST HDS724040AL

	OS: Debian 7.0, Kernel: 3.9.4-2013061402 (x86_64), Compiler: GCC 4.7, File-System: zfs, System Layer: Xen 4.1.3 Hypervisor

2GB larc 512MB ZZIL 10GB L2ARC: 

	Processor: AMD Opteron 6348 @ 2.80GHz (4 Cores), Memory: 4096MB, Disk: 4001GB HGST HDS724040AL

	OS: Debian 7.0, Kernel: 3.9.4-2013061402 (x86_64), Compiler: GCC 4.7, File-System: zfs, System Layer: Xen 4.1.3 Hypervisor

2GB larc 10GB L2ARC: 

	Processor: AMD Opteron 6348 @ 2.80GHz (4 Cores), Memory: 4096MB, Disk: 4001GB HGST HDS724040AL

	OS: Debian 7.0, Kernel: 3.9.4-2013061402 (x86_64), Compiler: GCC 4.7, File-System: zfs, System Layer: Xen 4.1.3 Hypervisor


Flexible IO Tester 1.57
Test: Intel IOMeter File Server Access Pattern
Seconds (Run Time) < Lower Is Better
2GB larc ....................... 314.54 |======================================
2GB larc 512MB ZIL ............. 297.01 |====================================
2GB larc 512MB ZZIL 10GB L2ARC . 245.64 |==============================
2GB larc 10GB L2ARC ............ 228.94 |============================


SQLite 3.7.3
Test Target: Default Test Directory
Seconds < Lower Is Better
2GB larc ....................... 36.28 |======================================
2GB larc 512MB ZIL ............. 36.71 |======================================
2GB larc 512MB ZZIL 10GB L2ARC . 37.23 |=======================================
2GB larc 10GB L2ARC ............ 36.16 |======================================


Threaded I/O Tester 0.3.3
Test: Read - Size Per Thread: 64MB - Thread Count: 4
MB/s > Higher Is Better
2GB larc ....................... 821.96 |======================================
2GB larc 512MB ZIL ............. 588.54 |===========================
2GB larc 512MB ZZIL 10GB L2ARC . 590.77 |===========================
2GB larc 10GB L2ARC ............ 783.66 |====================================


Threaded I/O Tester 0.3.3
Test: Write - Size Per Thread: 64MB - Thread Count: 4
MB/s > Higher Is Better
2GB larc ....................... 157.46 |======================================
2GB larc 512MB ZIL ............. 76.35  |==================
2GB larc 512MB ZZIL 10GB L2ARC . 82.19  |====================
2GB larc 10GB L2ARC ............ 159.46 |======================================


Threaded I/O Tester 0.3.3
Test: Random Read - Size Per Thread: 64MB - Thread Count: 4
MB/s > Higher Is Better
2GB larc ....................... 716.73 |======================================
2GB larc 512MB ZIL ............. 573.48 |==============================
2GB larc 512MB ZZIL 10GB L2ARC . 528.99 |============================
2GB larc 10GB L2ARC ............ 594.19 |================================


Threaded I/O Tester 0.3.3
Test: Random Write - Size Per Thread: 64MB - Thread Count: 4
MB/s > Higher Is Better
2GB larc ....................... 194.36 |======================================
2GB larc 512MB ZIL ............. 102.22 |====================
2GB larc 512MB ZZIL 10GB L2ARC . 86.51  |=================
2GB larc 10GB L2ARC ............ 171.72 |==================================


PostgreSQL pgbench 8.4.11
TPC-B Transactions Per Second
TPS > Higher Is Better
2GB larc ....................... 1190.86 |=====================================
2GB larc 512MB ZIL ............. 1166.36 |====================================
2GB larc 512MB ZZIL 10GB L2ARC . 1161.49 |====================================
2GB larc 10GB L2ARC ............ 1183.52 |=====================================


Apache Benchmark 2.4.3
Static Web Page Serving
Requests Per Second > Higher Is Better
2GB larc ....................... 12596.00 |====================================
2GB larc 512MB ZIL ............. 12568.11 |====================================
2GB larc 512MB ZZIL 10GB L2ARC . 12552.62 |====================================
2GB larc 10GB L2ARC ............ 12573.80 |====================================