drbd overhead Oracle VMware testing on Ubuntu 20.04 via the Phoronix Test Suite. 2c-50-768m_drbd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-50-768m_sd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-75-768m_drbd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-75-768m_sd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-100-768m_drbd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-100-768m_sd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 2c-100-768m_drbd.xfs_broken-sync: Processor: AMD Ryzen 5 3600XT 6-Core (2 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 729MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 4c-100-768m_drbd.xfs_broken-sync: Processor: AMD Ryzen 5 3600XT 6-Core (4 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 728MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware 4c-100-768m_sd.xfs: Processor: AMD Ryzen 5 3600XT 6-Core (4 Cores), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX 82441FX PMC, Memory: 728MB, Disk: 21GB VBOX HDD + 2 x 11GB VBOX HDD, Graphics: VMware SVGA II, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM OS: Ubuntu 20.04, Kernel: 5.4.0-66-generic (x86_64), Compiler: GCC 9.3.0, File-System: xfs, Screen Resolution: 2048x2048, System Layer: Oracle VMware Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 35.8 |=============================== 2c-50-768m_sd.xfs ................ 36.7 |================================ 2c-75-768m_drbd.xfs .............. 38.2 |================================== 2c-75-768m_sd.xfs ................ 37.9 |================================= 2c-100-768m_drbd.xfs ............. 40.0 |=================================== 2c-100-768m_sd.xfs ............... 40.9 |==================================== 2c-100-768m_drbd.xfs_broken-sync . 43.3 |====================================== 4c-100-768m_drbd.xfs_broken-sync . 41.2 |==================================== 4c-100-768m_sd.xfs ............... 42.6 |===================================== Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better 2c-50-768m_drbd.xfs .............. 9235 |=============================== 2c-50-768m_sd.xfs ................ 9381 |=============================== 2c-75-768m_drbd.xfs .............. 9775 |================================= 2c-75-768m_sd.xfs ................ 9704 |================================ 2c-100-768m_drbd.xfs ............. 10333 |=================================== 2c-100-768m_sd.xfs ............... 10467 |=================================== 2c-100-768m_drbd.xfs_broken-sync . 11075 |===================================== 4c-100-768m_drbd.xfs_broken-sync . 10600 |=================================== 4c-100-768m_sd.xfs ............... 10900 |==================================== Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 37.3 |========= 2c-50-768m_sd.xfs ................ 105.0 |=========================== 2c-75-768m_drbd.xfs .............. 41.3 |========== 2c-75-768m_sd.xfs ................ 118.9 |============================== 2c-100-768m_drbd.xfs ............. 46.4 |============ 2c-100-768m_sd.xfs ............... 133.0 |================================== 2c-100-768m_drbd.xfs_broken-sync . 146.0 |===================================== 4c-100-768m_drbd.xfs_broken-sync . 133.0 |================================== 4c-100-768m_sd.xfs ............... 119.0 |============================== Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better 2c-50-768m_drbd.xfs .............. 9547 |========= 2c-50-768m_sd.xfs ................ 26767 |========================== 2c-75-768m_drbd.xfs .............. 10495 |========== 2c-75-768m_sd.xfs ................ 30358 |============================== 2c-100-768m_drbd.xfs ............. 11867 |============ 2c-100-768m_sd.xfs ............... 33900 |================================= 2c-100-768m_drbd.xfs_broken-sync . 37492 |===================================== 4c-100-768m_drbd.xfs_broken-sync . 33992 |================================== 4c-100-768m_sd.xfs ............... 30313 |============================== Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 128KB - Disk Target: Default Test Directory MB/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 586 |================================= 2c-50-768m_sd.xfs ................ 594 |================================= 2c-75-768m_drbd.xfs .............. 631 |==================================== 2c-75-768m_sd.xfs ................ 659 |===================================== 2c-100-768m_drbd.xfs ............. 627 |=================================== 2c-100-768m_sd.xfs ............... 658 |===================================== 2c-100-768m_drbd.xfs_broken-sync . 691 |======================================= 4c-100-768m_drbd.xfs_broken-sync . 682 |====================================== 4c-100-768m_sd.xfs ............... 692 |======================================= Flexible IO Tester 3.25 Type: Random Read - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 128KB - Disk Target: Default Test Directory IOPS > Higher Is Better 2c-50-768m_drbd.xfs .............. 4681 |================================ 2c-50-768m_sd.xfs ................ 4754 |================================= 2c-75-768m_drbd.xfs .............. 5045 |=================================== 2c-75-768m_sd.xfs ................ 5265 |==================================== 2c-100-768m_drbd.xfs ............. 5012 |================================== 2c-100-768m_sd.xfs ............... 5260 |==================================== 2c-100-768m_drbd.xfs_broken-sync . 5519 |====================================== 4c-100-768m_drbd.xfs_broken-sync . 5450 |===================================== 4c-100-768m_sd.xfs ............... 5533 |====================================== Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 128KB - Disk Target: Default Test Directory MB/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 116.6 |==== 2c-50-768m_sd.xfs ................ 569.0 |===================== 2c-75-768m_drbd.xfs .............. 107.0 |==== 2c-75-768m_sd.xfs ................ 756.0 |============================ 2c-100-768m_drbd.xfs ............. 121.0 |===== 2c-100-768m_sd.xfs ............... 847.0 |================================ 2c-100-768m_drbd.xfs_broken-sync . 889.0 |================================= 4c-100-768m_drbd.xfs_broken-sync . 933.0 |=================================== 4c-100-768m_sd.xfs ............... 986.0 |===================================== Flexible IO Tester 3.25 Type: Random Write - Engine: Linux AIO - Buffered: Yes - Direct: No - Block Size: 128KB - Disk Target: Default Test Directory IOPS > Higher Is Better 2c-50-768m_drbd.xfs .............. 930 |==== 2c-50-768m_sd.xfs ................ 4543 |====================== 2c-75-768m_drbd.xfs .............. 853 |==== 2c-75-768m_sd.xfs ................ 6046 |============================= 2c-100-768m_drbd.xfs ............. 968 |===== 2c-100-768m_sd.xfs ............... 6772 |================================= 2c-100-768m_drbd.xfs_broken-sync . 7112 |================================== 4c-100-768m_drbd.xfs_broken-sync . 7461 |==================================== 4c-100-768m_sd.xfs ............... 7887 |====================================== FS-Mark 3.3 Test: 1000 Files, 1MB Size Files/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 79.7 |======= 2c-50-768m_sd.xfs ................ 381.1 |=================================== 2c-75-768m_drbd.xfs .............. 95.2 |========= 2c-75-768m_sd.xfs ................ 386.8 |==================================== 2c-100-768m_drbd.xfs ............. 98.3 |========= 2c-100-768m_sd.xfs ............... 387.7 |==================================== 2c-100-768m_drbd.xfs_broken-sync . 398.0 |===================================== 4c-100-768m_drbd.xfs_broken-sync . 388.8 |==================================== 4c-100-768m_sd.xfs ............... 378.7 |=================================== FS-Mark 3.3 Test: 1000 Files, 1MB Size, No Sync/FSync Files/s > Higher Is Better 2c-50-768m_drbd.xfs .............. 144.6 |=== 2c-50-768m_sd.xfs ................ 1114.0 |========================== 2c-75-768m_drbd.xfs .............. 133.5 |=== 2c-75-768m_sd.xfs ................ 1467.6 |================================== 2c-100-768m_drbd.xfs ............. 150.7 |=== 2c-100-768m_sd.xfs ............... 1568.1 |==================================== 2c-100-768m_drbd.xfs_broken-sync . 1382.8 |================================ 4c-100-768m_drbd.xfs_broken-sync . 1483.2 |================================== 4c-100-768m_sd.xfs ............... 1487.3 |================================== Sysbench 2018-07-28 Test: Memory Events Per Second > Higher Is Better 2c-50-768m_drbd.xfs .............. 4684365.56 |================== 2c-50-768m_sd.xfs ................ 4500949.66 |================== 2c-75-768m_drbd.xfs .............. 5571462.29 |====================== 2c-75-768m_sd.xfs ................ 5185705.68 |==================== 2c-100-768m_drbd.xfs ............. 5416008.17 |===================== 2c-100-768m_sd.xfs ............... 5352567.53 |===================== 2c-100-768m_drbd.xfs_broken-sync . 5334350.08 |===================== 4c-100-768m_drbd.xfs_broken-sync . 7993172.47 |=============================== 4c-100-768m_sd.xfs ............... 8149845.29 |================================ Sysbench 2018-07-28 Test: CPU Events Per Second > Higher Is Better 2c-50-768m_drbd.xfs .............. 1770.23 |======= 2c-50-768m_sd.xfs ................ 1789.07 |======= 2c-75-768m_drbd.xfs .............. 2734.84 |=========== 2c-75-768m_sd.xfs ................ 2762.10 |============ 2c-100-768m_drbd.xfs ............. 4147.82 |================= 2c-100-768m_sd.xfs ............... 4202.28 |================== 2c-100-768m_drbd.xfs_broken-sync . 4224.03 |================== 4c-100-768m_drbd.xfs_broken-sync . 8379.47 |=================================== 4c-100-768m_sd.xfs ............... 8309.36 |===================================