guest KVM testing on Debian 10 via the Phoronix Test Suite. xfs, bfq: Processor: 2 x Intel Core (Broadwell IBRS) (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 11GB QEMU HDD + 43GB QEMU HDD, Graphics: Red Hat QXL paravirtual graphic card, Network: 2 x Red Hat Virtio device OS: Debian 10, Kernel: 4.19.0-8-amd64 (x86_64), Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM xfs, kyber: Processor: 2 x Intel Core (Broadwell IBRS) (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 11GB QEMU HDD + 43GB QEMU HDD, Graphics: Red Hat QXL paravirtual graphic card, Network: 2 x Red Hat Virtio device OS: Debian 10, Kernel: 4.19.0-8-amd64 (x86_64), Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM lvm: Processor: 2 x Intel Core (Broadwell IBRS) (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 1 x 2048 MB RAM QEMU, Disk: 2GB QEMU HDD + 43GB QEMU HDD, Graphics: Red Hat QXL paravirtual graphic card, Network: 2 x Red Hat Virtio device OS: Debian 10, Kernel: 4.19.0-8-amd64 (x86_64), Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM SQLite 3.30.1 Timed SQLite Insertions Seconds < Lower Is Better xfs, bfq ... 10.910 |========================================================== xfs, kyber . 9.340 |================================================== lvm ........ 9.705 |==================================================== Flexible IO Tester 3.18 Type: Random Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 10333 |=========================================================== xfs, kyber . 9919 |========================================================= lvm ........ 10275 |=========================================================== Flexible IO Tester 3.18 Type: Random Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 363 |============================================================= xfs, kyber . 364 |============================================================= lvm ........ 360 |============================================================ Flexible IO Tester 3.18 Type: Random Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 93000 |=========================================================== xfs, kyber . 93267 |=========================================================== lvm ........ 92267 |========================================================== Flexible IO Tester 3.18 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 2319 |============================================================ xfs, kyber . 2314 |============================================================ Flexible IO Tester 3.18 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 1156 |========= xfs, kyber . 1153 |========= lvm ........ 7468 |============================================================ Flexible IO Tester 3.18 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 339 |============================================================ xfs, kyber . 344 |============================================================= lvm ........ 334 |=========================================================== Flexible IO Tester 3.18 Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 86833 |========================================================== xfs, kyber . 88033 |=========================================================== lvm ........ 84800 |========================================================= Flexible IO Tester 3.18 Type: Sequential Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 10267 |======================================================== xfs, kyber . 10333 |========================================================= lvm ........ 10787 |=========================================================== Flexible IO Tester 3.18 Type: Sequential Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 370 |============================================================= xfs, kyber . 372 |============================================================= lvm ........ 360 |=========================================================== Flexible IO Tester 3.18 Type: Sequential Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 94700 |=========================================================== xfs, kyber . 94833 |=========================================================== lvm ........ 92060 |========================================================= Flexible IO Tester 3.18 Type: Sequential Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 2311 |============================================================ xfs, kyber . 2308 |============================================================ Flexible IO Tester 3.18 Type: Sequential Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 2MB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 1152 |========== xfs, kyber . 1150 |========== lvm ........ 7228 |============================================================ Flexible IO Tester 3.18 Type: Sequential Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory MB/s > Higher Is Better xfs, bfq ... 339 |============================================================ xfs, kyber . 340 |============================================================ lvm ........ 343 |============================================================= Flexible IO Tester 3.18 Type: Sequential Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory IOPS > Higher Is Better xfs, bfq ... 86833 |========================================================== xfs, kyber . 87000 |=========================================================== lvm ........ 87620 |=========================================================== FS-Mark 3.3 Test: 1000 Files, 1MB Size Files/s > Higher Is Better xfs, bfq ... 374.8 |=========================================================== xfs, kyber . 376.7 |=========================================================== lvm ........ 348.5 |======================================================= FS-Mark 3.3 Test: 5000 Files, 1MB Size, 4 Threads Files/s > Higher Is Better xfs, bfq ... 714.4 |========================================================= xfs, kyber . 733.1 |=========================================================== lvm ........ 639.5 |=================================================== FS-Mark 3.3 Test: 4000 Files, 32 Sub Dirs, 1MB Size Files/s > Higher Is Better xfs, bfq ... 379.6 |=========================================================== xfs, kyber . 380.2 |=========================================================== lvm ........ 351.6 |======================================================= FS-Mark 3.3 Test: 1000 Files, 1MB Size, No Sync/FSync Files/s > Higher Is Better xfs, bfq ... 1112.6 |==================================================== xfs, kyber . 1120.8 |==================================================== lvm ........ 1243.4 |========================================================== Dbench 4.0 12 Clients MB/s > Higher Is Better xfs, bfq ... 893.12 |======================================================== xfs, kyber . 893.59 |======================================================== lvm ........ 921.18 |========================================================== Dbench 4.0 1 Clients MB/s > Higher Is Better xfs, bfq ... 381.97 |======================================================== xfs, kyber . 390.42 |========================================================= lvm ........ 394.84 |========================================================== Compile Bench 0.6 Test: Compile MB/s > Higher Is Better xfs, bfq ... 860.72 |================================================= xfs, kyber . 853.16 |================================================ lvm ........ 1002.78 |========================================================= Compile Bench 0.6 Test: Initial Create MB/s > Higher Is Better xfs, bfq ... 242.57 |======================================================== xfs, kyber . 240.49 |======================================================= lvm ........ 252.15 |========================================================== Compile Bench 0.6 Test: Read Compiled Tree MB/s > Higher Is Better xfs, bfq ... 740.76 |========================================================= xfs, kyber . 740.11 |========================================================= lvm ........ 749.18 |========================================================== PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better xfs, bfq ... 2130 |============================================================ xfs, kyber . 2118 |============================================================ lvm ........ 2124 |============================================================