prefetch-bench
AMD Athlon II X2 245 testing with a ASUS M4A78 (2301 BIOS) and ECS AMD Radeon HD 7450 on Debian testing via the Phoronix Test Suite.


with prefetch 2: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

without prefetch: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4

with prefetch 8: 

	Processor: AMD Athlon II X2 245 @ 2.90GHz (2 Cores), Motherboard: ASUS M4A78 (2301 BIOS), Chipset: AMD RX780/RX790 + SB7x0/SB8x0/SB9x0, Memory: 4096MB, Disk: 120GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DL003-9VT1, Graphics: ECS AMD Radeon HD 7450, Audio: Realtek ALC887, Network: Realtek RTL8111/8168/8411

	OS: Debian testing, Kernel: 5.6.0-proper-rmw (x86_64), Compiler: GCC 9.3.0, File-System: ext4


Flexible IO Tester 3.18
Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 .. 132 |=======================================================
without prefetch . 132 |=======================================================
with prefetch 8 .. 132 |=======================================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 .. 4227 |======================================================
without prefetch . 4214 |======================================================
with prefetch 8 .. 4206 |======================================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 .. 122.6 |=================================================
without prefetch . 132.0 |=====================================================
with prefetch 8 .. 132.0 |=====================================================


Flexible IO Tester 3.18
Type: Sequential Read - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 .. 1959 |==================================================
without prefetch . 2110 |======================================================
with prefetch 8 .. 2111 |======================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 .. 106.0 |=====================================================
without prefetch . 98.2  |=================================================
with prefetch 8 .. 100.2 |==================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 32KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 .. 3384 |======================================================
without prefetch . 3140 |==================================================
with prefetch 8 .. 3203 |===================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
MB/s > Higher Is Better
with prefetch 2 .. 103.3 |=====================================================
without prefetch . 100.6 |====================================================
with prefetch 8 .. 99.8  |===================================================


Flexible IO Tester 3.18
Type: Sequential Write - Engine: Linux AIO - Buffered: Yes - Direct: Yes - Block Size: 64KB - Disk Target: /mnt
IOPS > Higher Is Better
with prefetch 2 .. 1648 |======================================================
without prefetch . 1609 |=====================================================
with prefetch 8 .. 1597 |====================================================


FS-Mark 3.3
Test: 1000 Files, 1MB Size
Files/s > Higher Is Better
with prefetch 2 .. 11.7 |===================================================
without prefetch . 12.2 |=====================================================
with prefetch 8 .. 12.4 |======================================================


FS-Mark 3.3
Test: 1000 Files, 1MB Size, No Sync/FSync
Files/s > Higher Is Better
with prefetch 2 .. 158.3 |===================================================
without prefetch . 146.4 |===============================================
with prefetch 8 .. 165.4 |=====================================================