freenaszpool01 Xen HVM domU 4.7.6-6.3.1.xcp testing on Debian 9.6 via the Phoronix Test Suite. with_jumbo_frames: Processor: 2 x Intel Xeon E3-1225 v3 (3 Cores), Motherboard: Xen HVM domU (4.7.6-6.3.1.xcp BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 2048MB, Disk: 9GB, Graphics: bochsdrmfb OS: Debian 9.6, Kernel: 4.9.0-8-amd64 (x86_64), Compiler: GCC 6.3.0 20170516, File-System: ext4, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.7.6-6.3.1.xcp with_jumbo_frames_fixed: Processor: 2 x Intel Xeon E3-1225 v3 (3 Cores), Motherboard: Xen HVM domU (4.7.6-6.3.1.xcp BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 2048MB, Disk: 9GB, Graphics: bochsdrmfb OS: Debian 9.6, Kernel: 4.9.0-8-amd64 (x86_64), Compiler: GCC 6.3.0 20170516, File-System: nfs, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.7.6-6.3.1.xcp IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better with_jumbo_frames ....... 8596 |=============================================== with_jumbo_frames_fixed . 381 |== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better with_jumbo_frames ....... 5786 |=============================================== with_jumbo_frames_fixed . 391 |=== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better with_jumbo_frames ....... 334 |================================================ with_jumbo_frames_fixed . 123 |================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better with_jumbo_frames ....... 502 |================================================ with_jumbo_frames_fixed . 127 |============ IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better with_jumbo_frames ....... 8740 |=============================================== with_jumbo_frames_fixed . 380 |== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better with_jumbo_frames ....... 533 |================================================ with_jumbo_frames_fixed . 135 |============