I did the Long test and used the recommended settings.But I see a drop in transfer speeds when I transfer files from 1 hdd to another in same share using mc (ssh).It dropped from 100 MB/s+ to ~40-50 MB/s.
Unraid 6.x Tunables Tester v4.1 by Pauven
Tunables Report produced Wed Aug 21 18:02:37 NZST 2019
Run on server:
Long Parity Sync Test
Current Values: md_num_stripes=4096, md_sync_window=2048, md_sync_thresh=2000
Global nr_requests=128
Disk Specific nr_requests Values:
sdj=128, sdi=128, sdg=128, sdh=128, sdf=128, sdm=128,
sdk=128, sde=128, sdc=128, sdd=128,
--- INITIAL BASELINE TEST OF CURRENT VALUES (1 Sample Point @ 10min Duration)---
Tst | RAM | stri | win | req | thresh | MB/s
----------------------------------------------
1 | 186 | 4096 | 2048 | 128 | 2000 | 141.7
--- BASELINE TEST OF UNRAID DEFAULT VALUES (1 Sample Point @ 10min Duration)---
Tst | RAM | stri | win | req | thresh | MB/s
----------------------------------------------
1 | 58 | 1280 | 384 | 128 | 192 | 141.7
--- TEST PASS 1 (2.5 Hrs - 12 Sample Points @ 10min Duration) ---
Tst | RAM | stri | win | req | thresh | MB/s | thresh | MB/s | thresh | MB/s
--------------------------------------------------------------------------------
1 | 34 | 768 | 384 | 128 | 376 | 134.7 | 320 | 140.6 | 192 | 141.7
2 | 69 | 1536 | 768 | 128 | 760 | 141.4 | 704 | 141.3 | 384 | 141.2
3 | 139 | 3072 | 1536 | 128 | 1528 | 141.7 | 1472 | 141.8 | 768 | 141.4
4 | 279 | 6144 | 3072 | 128 | 3064 | 141.7 | 3008 | 141.5 | 1536 | 141.7
--- TEST PASS 1_LOW (3 Hrs - 15 Sample Points @ 10min Duration) ---
Tst | RAM | stri | win | req | thresh | MB/s | thresh | MB/s | thresh | MB/s
--------------------------------------------------------------------------------
1 | 5 | 128 | 64 | 128 | 56 | 141.5 | 0 | 141.4 | 32 | 141.2
2 | 11 | 256 | 128 | 128 | 120 | 140.6 | 64 | 141.6 | 64 | 141.5
3 | 17 | 384 | 192 | 128 | 184 | 140.5 | 128 | 141.6 | 96 | 141.6
4 | 23 | 512 | 256 | 128 | 248 | 140.7 | 192 | 141.7 | 128 | 141.7
5 | 29 | 640 | 320 | 128 | 312 | 140.4 | 256 | 139.4 | 160 | 141.6
--- TEST PASS 1_HIGH (40 Min - 3 Sample Points @ 10min Duration)---
Tst | RAM | stri | win | req | thresh | MB/s | thresh | MB/s | thresh | MB/s
--------------------------------------------------------------------------------
1 | 558 |12288 | 6144 | 128 | 6136 | 141.4 | 6080 | 141.4 | 3072 | 141.5
--- TEST PASS 1_VERYHIGH (40 Min - 3 Sample Points @ 10min Duration)---
Tst | RAM | stri | win | req | thresh | MB/s | thresh | MB/s | thresh | MB/s
--------------------------------------------------------------------------------
1 | 838 |18432 | 9216 | 128 | 9208 | 141.5 | 9152 | 141.4 | 4608 | 141.4
--- Using md_sync_window=128 & md_sync_thresh=window-64 for Pass 2 ---
--- TEST PASS 2 (10 Hrs - 49 Sample Points @ 10min Duration) ---
Tst | RAM | stri | win | req | thresh | MB/s
----------------------------------------------
1 | 0 | 16 | 8 | 128 | -56 | 121.1
2 | 1 | 32 | 16 | 128 | -48 | 132.7
3 | 2 | 48 | 24 | 128 | -40 | 134.2
4 | 2 | 64 | 32 | 128 | -32 | 111.1
5 | 3 | 80 | 40 | 128 | -24 | 91.9
6 | 4 | 96 | 48 | 128 | -16 | 89.8
7 | 5 | 112 | 56 | 128 | -8 | 97.9
8 | 5 | 128 | 64 | 128 | 0 | 141.4
9 | 6 | 144 | 72 | 128 | 8 | 141.4
10 | 7 | 160 | 80 | 128 | 16 | 141.6
11 | 8 | 176 | 88 | 128 | 24 | 141.6
12 | 8 | 192 | 96 | 128 | 32 | 141.5
13 | 9 | 208 | 104 | 128 | 40 | 141.6
14 | 10 | 224 | 112 | 128 | 48 | 141.4
15 | 10 | 240 | 120 | 128 | 56 | 141.6
16 | 11 | 256 | 128 | 128 | 64 | 141.6
17 | 12 | 272 | 136 | 128 | 72 | 141.6
18 | 13 | 288 | 144 | 128 | 80 | 141.7
19 | 13 | 304 | 152 | 128 | 88 | 141.6
20 | 14 | 320 | 160 | 128 | 96 | 141.7
21 | 15 | 336 | 168 | 128 | 104 | 141.7
22 | 16 | 352 | 176 | 128 | 112 | 141.8
23 | 16 | 368 | 184 | 128 | 120 | 141.7
24 | 17 | 384 | 192 | 128 | 128 | 141.8
25 | 18 | 400 | 200 | 128 | 136 | 141.7
26 | 18 | 416 | 208 | 128 | 144 | 141.8
27 | 19 | 432 | 216 | 128 | 152 | 141.8
28 | 20 | 448 | 224 | 128 | 160 | 141.7
29 | 21 | 464 | 232 | 128 | 168 | 141.8
30 | 21 | 480 | 240 | 128 | 176 | 141.6
31 | 22 | 496 | 248 | 128 | 184 | 141.5
32 | 23 | 512 | 256 | 128 | 192 | 141.8
33 | 24 | 528 | 264 | 128 | 200 | 141.1
34 | 24 | 544 | 272 | 128 | 208 | 141.3
35 | 25 | 560 | 280 | 128 | 216 | 140.9
36 | 26 | 576 | 288 | 128 | 224 | 141.3
37 | 26 | 592 | 296 | 128 | 232 | 141.3
38 | 27 | 608 | 304 | 128 | 240 | 140.9
39 | 28 | 624 | 312 | 128 | 248 | 141.1
40 | 29 | 640 | 320 | 128 | 256 | 141.0
--- Using fastest result of md_sync_window=128 for Pass 3 ---
--- TEST PASS 3 (4 Hrs - 18 Sample Points @ 10min Duration) ---
Tst | RAM | stri | win | req | thresh | MB/s
----------------------------------------------
1a | 11 | 256 | 128 | 128 | 127 | 84.9
1b | 11 | 256 | 128 | 128 | 124 | 115.1
1c | 11 | 256 | 128 | 128 | 120 | 140.7
1d | 11 | 256 | 128 | 128 | 116 | 141.4
1e | 11 | 256 | 128 | 128 | 112 | 141.5
1f | 11 | 256 | 128 | 128 | 108 | 141.5
1g | 11 | 256 | 128 | 128 | 104 | 141.6
1h | 11 | 256 | 128 | 128 | 100 | 141.7
1i | 11 | 256 | 128 | 128 | 96 | 141.7
1j | 11 | 256 | 128 | 128 | 92 | 141.6
1k | 11 | 256 | 128 | 128 | 88 | 141.7
1l | 11 | 256 | 128 | 128 | 84 | 141.4
1m | 11 | 256 | 128 | 128 | 80 | 141.7
1n | 11 | 256 | 128 | 128 | 76 | 141.7
1o | 11 | 256 | 128 | 128 | 72 | 141.4
1p | 11 | 256 | 128 | 128 | 68 | 141.2
1q | 11 | 256 | 128 | 128 | 64 | 141.6
1r | 11 | 256 | 128 | 128 | 64 | 141.5
The results below do NOT include the Baseline test of current values.
The Fastest settings tested give a peak speed of 141.8 MB/s
md_sync_window: 176 md_num_stripes: 352
md_sync_thresh: 112 nr_requests: 128
This will consume 16 MB (170 MB less than your current utilization of 186 MB)
The Thriftiest settings (95% of Fastest) give a peak speed of 141.5 MB/s
md_sync_window: 64 md_num_stripes: 128
md_sync_thresh: 56 nr_requests: 128
This will consume 5 MB (181 MB less than your current utilization of 186 MB)
The Recommended settings (99% of Fastest) give a peak speed of 141.5 MB/s
md_sync_window: 64 md_num_stripes: 128
md_sync_thresh: 56 nr_requests: 128
This will consume 5 MB (181 MB less than your current utilization of 186 MB)
NOTE: Adding additional drives will increase memory consumption.
In Unraid, go to Settings > Disk Settings to set your chosen parameter values.
Completed: 17 Hrs 30 Min 35 Sec.
NOTE: Use the smallest set of values that produce good results. Larger values
increase server memory use, and may cause stability issues with Unraid,
especially if you have any add-ons or plug-ins installed.
System Info:
Unraid version 6.7.2
md_num_stripes=4096
md_sync_window=2048
md_sync_thresh=2000
nr_requests=128 (Global Setting)
sbNumDisks=11
CPU: AMD Ryzen 7 2700 Eight-Core Processor
RAM: 32GiB System Memory
Outputting free low memory information...
total used free shared buff/cache available
Mem: 32930436 776632 30546456 1483776 1607348 30277472
Low: 32930436 2383980 30546456
High: 0 0 0
Swap: 0 0 0
SCSI Host Controllers and Connected Array Drives
------------------------------------------------------------------------------
[0] scsi0 usb-storage
[0:0:0:0] flash sda 30.7GB Ultra Fit
[1] scsi1 ahci
[1:0:0:0] parity sdj 10.0TB ST10000NM0016-1T
[2] scsi2 ahci
[3] scsi3 ahci
[4] scsi4 ahci
[5] scsi5 ahci
[6] scsi6 ahci
[6:0:0:0] disk6 sdk 8.00TB ST8000DM004-2CX1
[7] scsi7 ahci
[8] scsi8 ahci
[9] scsi9 mpt3sas SAS3008 PCI-Express Fusion-MPT SAS-3
[9:0:0:0] cache2 sdb 500GB WDC WDS500G2B0B-
[9:0:1:0] disk8 sdc 10.0TB WDC WD100EZAZ-11
[9:0:2:0] disk9 sdd 10.0TB WDC WD100EZAZ-11
[9:0:3:0] disk7 sde 10.0TB WDC WD100EZAZ-11
[9:0:4:0] disk4 sdf 8.00TB WDC WD80EMAZ-00W
[9:0:5:0] disk2 sdg 8.00TB WDC WD80EMAZ-00M
[9:0:6:0] disk3 sdh 8.00TB WDC WD80EZAZ-11T
[9:0:7:0] disk1 sdi 8.00TB WDC WD80EMAZ-00M
[10] scsi10 ahci
[11] scsi11 ahci
[11:0:0:0] disk5 sdm 2.00TB WDC WD20EFRX-68E
[12] scsi12 ahci
[N0] scsiN0 nvme0 NVMe
[N:0:4:1] cache nvme0n1 500GB Samsung SSD 970
[N1] scsiN1 nvme1 NVMe
[N:1:1:1] cache3 nvme1n1 500GB WDC WDS500G1B0C-
*** END OF REPORT ***