zfstest_slog_limit_increase
Intel Atom C2750 testing with a Supermicro A1SAM-2750F v1.02 and ASPEED ASPEED Family on Ubuntu 16.04 via the Phoronix Test Suite.


atomzfsbox: 

	Processor: Intel Atom C2750 @ 2.40GHz (8 Cores), Motherboard: Supermicro A1SAM-2750F v1.02, Chipset: Intel Atom C2000 SoC Transaction Router, Memory: 32768MB, Disk: 2 x 1000GB Seagate ST31000528AS + 1000GB Western Digital WD10EZEX-00B + 2000GB Seagate ST2000DM001-1ER1 + 2000GB TOSHIBA HDWD120 + 2 x 1000GB Seagate ST1000LM014-1EJ1 + 250GB Samsung SSD 850, Graphics: ASPEED ASPEED Family, Network: Intel Connection I354 + Mellanox MT27500 Family

	OS: Ubuntu 16.04, Kernel: 4.4.0-72-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: zfs, Screen Resolution: 1024x768

zfstestl2arche1: 

	Processor: Intel Atom C2750 @ 2.40GHz (8 Cores), Motherboard: Supermicro A1SAM-2750F v1.02, Chipset: Intel Atom C2000 SoC Transaction Router, Memory: 32768MB, Disk: 2 x 1000GB Seagate ST31000528AS + 2000GB Seagate ST2000DM001-1ER1 + 2000GB TOSHIBA HDWD120 + 2 x 1000GB Seagate ST1000LM014-1EJ1 + 250GB Samsung SSD 850 + 1000GB Western Digital WD10EZEX-00B, Graphics: LLVMpipe, Network: Intel Connection I354 + Mellanox MT27500 Family

	OS: Ubuntu 16.04, Kernel: 4.4.0-72-generic (x86_64), Display Server: X Server 1.18.4, OpenGL: 3.3 Mesa 12.0.6 Gallium 0.4, Compiler: GCC 5.4.0 20160609, File-System: zfs, Screen Resolution: 1920x1080

slog_limit: 

	Processor: Intel Atom C2750 @ 2.40GHz (8 Cores), Motherboard: Supermicro A1SAM-2750F v1.02, Chipset: Intel Atom C2000 SoC Transaction Router, Memory: 32768MB, Disk: 2 x 1000GB Seagate ST31000528AS + 1000GB Western Digital WD10EZEX-00B + 2000GB Seagate ST2000DM001-1ER1 + 2000GB TOSHIBA HDWD120 + 2 x 1000GB Seagate ST1000LM014-1EJ1 + 250GB Samsung SSD 850, Graphics: ASPEED ASPEED Family, Network: Intel Connection I354 + Mellanox MT27500 Family

	OS: Ubuntu 16.04, Kernel: 4.4.0-72-generic (x86_64), Compiler: GCC 5.4.0 20160609, File-System: zfs, Screen Resolution: 1024x768

default_opts: 

	Processor: Intel Atom C2750 @ 2.40GHz (8 Cores), Motherboard: Supermicro A1SAM-2750F v1.02, Chipset: Intel Atom C2000 SoC Transaction Router, Memory: 32768MB, Disk: 2 x 1000GB Seagate ST31000528AS + 1000GB Western Digital WD10EZEX-00B + 2000GB Seagate ST2000DM001-1ER1 + 2000GB TOSHIBA HDWD120 + 2 x 1000GB Seagate ST1000LM014-1EJ1 + 250GB Samsung SSD 850, Graphics: LLVMpipe, Network: Intel Connection I354 + Mellanox MT27500 Family

	OS: Ubuntu 16.04, Kernel: 4.4.0-75-generic (x86_64), Display Server: X Server 1.18.4, OpenGL: 3.3 Mesa 12.0.6 Gallium 0.4, Compiler: GCC 5.4.0 20160609, File-System: zfs, Screen Resolution: 1920x1080


IOzone 3.405
Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 2227.53 |===================================================
slog_limit ...... 2149.54 |==================================================
default_opts .... 2252.92 |====================================================


IOzone 3.405
Record Size: 1MB - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 2227.47 |===================================================
slog_limit ...... 2120.33 |=================================================
default_opts .... 2265.75 |====================================================


IOzone 3.405
Record Size: 1MB - File Size: 8GB - Disk Test: Read Performance
MB/s > Higher Is Better
atomzfsbox ...... 2263.69 |====================================================
zfstestl2arche1 . 2203.13 |===================================================
slog_limit ...... 2064.71 |===============================================
default_opts .... 2262.70 |====================================================


IOzone 3.405
Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 652.85 |=====================================================
slog_limit ...... 641.44 |====================================================
default_opts .... 631.59 |===================================================


IOzone 3.405
Record Size: 4Kb - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 648.15 |=====================================================
slog_limit ...... 650.90 |=====================================================
default_opts .... 635.20 |====================================================


IOzone 3.405
Record Size: 4Kb - File Size: 8GB - Disk Test: Read Performance
MB/s > Higher Is Better
atomzfsbox ...... 631.01 |====================================================
zfstestl2arche1 . 644.93 |=====================================================
slog_limit ...... 639.85 |=====================================================
default_opts .... 630.59 |====================================================


IOzone 3.405
Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 825.38 |=================================================
slog_limit ...... 653.79 |=======================================
default_opts .... 898.53 |=====================================================


IOzone 3.405
Record Size: 1MB - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 896.40  |============================================
slog_limit ...... 739.73  |====================================
default_opts .... 1054.95 |====================================================


IOzone 3.405
Record Size: 1MB - File Size: 8GB - Disk Test: Write Performance
MB/s > Higher Is Better
atomzfsbox ...... 941.83  |=================================================
zfstestl2arche1 . 888.22  |==============================================
slog_limit ...... 737.61  |======================================
default_opts .... 1006.47 |====================================================


IOzone 3.405
Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 193.36 |=====================================================
slog_limit ...... 193.28 |=====================================================
default_opts .... 189.33 |====================================================


IOzone 3.405
Record Size: 4Kb - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 196.03 |=====================================================
slog_limit ...... 196.08 |=====================================================
default_opts .... 189.49 |===================================================


IOzone 3.405
Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance
MB/s > Higher Is Better
atomzfsbox ...... 193.88 |====================================================
zfstestl2arche1 . 196.34 |=====================================================
slog_limit ...... 194.89 |=====================================================
default_opts .... 189.47 |===================================================


IOzone 3.405
Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 3409.90 |====================================================
slog_limit ...... 3268.00 |==================================================
default_opts .... 3332.51 |===================================================


IOzone 3.405
Record Size: 64Kb - File Size: 4GB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 3388.69 |====================================================
slog_limit ...... 3242.56 |==================================================
default_opts .... 3356.67 |====================================================


IOzone 3.405
Record Size: 64Kb - File Size: 8GB - Disk Test: Read Performance
MB/s > Higher Is Better
atomzfsbox ...... 3352.83 |====================================================
zfstestl2arche1 . 3375.46 |====================================================
slog_limit ...... 3128.52 |================================================
default_opts .... 3352.76 |====================================================


IOzone 3.405
Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 2305.90 |====================================================
slog_limit ...... 2282.45 |===================================================
default_opts .... 2228.94 |==================================================


IOzone 3.405
Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 656.31 |=====================================================
slog_limit ...... 648.48 |====================================================
default_opts .... 625.00 |==================================================


IOzone 3.405
Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 799.37 |=====================================================
slog_limit ...... 647.65 |===========================================
default_opts .... 798.36 |=====================================================


IOzone 3.405
Record Size: 64Kb - File Size: 4GB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 773.68 |===============================================
slog_limit ...... 668.32 |========================================
default_opts .... 875.87 |=====================================================


IOzone 3.405
Record Size: 64Kb - File Size: 8GB - Disk Test: Write Performance
MB/s > Higher Is Better
atomzfsbox ...... 817.90 |=================================================
zfstestl2arche1 . 805.51 |================================================
slog_limit ...... 708.06 |==========================================
default_opts .... 885.71 |=====================================================


IOzone 3.405
Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 454.14 |=====================================================
slog_limit ...... 299.30 |===================================
default_opts .... 442.41 |====================================================


IOzone 3.405
Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 182.24 |====================================================
slog_limit ...... 184.81 |=====================================================
default_opts .... 181.07 |====================================================


IOzone 3.405
Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance
MB/s > Higher Is Better
zfstestl2arche1 . 3524.30 |====================================================
slog_limit ...... 3498.82 |====================================================
default_opts .... 3299.79 |=================================================


IOzone 3.405
Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance
MB/s > Higher Is Better
zfstestl2arche1 . 501.23 |====================================================
slog_limit ...... 317.02 |=================================
default_opts .... 509.64 |=====================================================