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unraid-tunables-tester.sh - A New Utility to Optimize unRAID md_* Tunables
My results; Tunables Report from unRAID Tunables Tester v2.2 by Pauven 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. Test | num_stripes | write_limit | sync_window | Speed --- FULLY AUTOMATIC TEST PASS 1 (Rough - 20 Sample Points @ 3min Duration)--- 1 | 1408 | 768 | 512 | 76.3 MB/s 2 | 1536 | 768 | 640 | 76.4 MB/s 3 | 1664 | 768 | 768 | 76.4 MB/s 4 | 1920 | 896 | 896 | 76.3 MB/s 5 | 2176 | 1024 | 1024 | 76.3 MB/s 6 | 2560 | 1152 | 1152 | 76.4 MB/s 7 | 2816 | 1280 | 1280 | 76.3 MB/s 8 | 3072 | 1408 | 1408 | 76.3 MB/s 9 | 3328 | 1536 | 1536 | 76.4 MB/s 10 | 3584 | 1664 | 1664 | 76.3 MB/s 11 | 3968 | 1792 | 1792 | 76.3 MB/s 12 | 4224 | 1920 | 1920 | 76.4 MB/s 13 | 4480 | 2048 | 2048 | 76.4 MB/s 14 | 4736 | 2176 | 2176 | 76.3 MB/s 15 | 5120 | 2304 | 2304 | 76.3 MB/s 16 | 5376 | 2432 | 2432 | 76.3 MB/s 17 | 5632 | 2560 | 2560 | 76.4 MB/s 18 | 5888 | 2688 | 2688 | 76.3 MB/s 19 | 6144 | 2816 | 2816 | 76.4 MB/s 20 | 6528 | 2944 | 2944 | 76.3 MB/s --- Targeting Fastest Result of md_sync_window 640 bytes for Final Pass --- --- FULLY AUTOMATIC TEST PASS 2 (Final - 16 Sample Points @ 4min Duration)--- 21 | 1424 | 768 | 520 | 76.4 MB/s 22 | 1440 | 768 | 528 | 76.3 MB/s 23 | 1448 | 768 | 536 | 76.3 MB/s 24 | 1456 | 768 | 544 | 76.3 MB/s 25 | 1464 | 768 | 552 | 76.4 MB/s 26 | 1472 | 768 | 560 | 76.3 MB/s 27 | 1480 | 768 | 568 | 76.3 MB/s 28 | 1488 | 768 | 576 | 76.3 MB/s 29 | 1496 | 768 | 584 | 76.4 MB/s 30 | 1504 | 768 | 592 | 76.3 MB/s 31 | 1520 | 768 | 600 | 76.3 MB/s 32 | 1528 | 768 | 608 | 76.4 MB/s 33 | 1536 | 768 | 616 | 76.3 MB/s 34 | 1544 | 768 | 624 | 76.3 MB/s 35 | 1552 | 768 | 632 | 76.4 MB/s 36 | 1560 | 768 | 640 | 76.4 MB/s Completed: 2 Hrs 8 Min 24 Sec. Best Bang for the Buck: Test 1 with a speed of 76.3 MB/s Tunable (md_num_stripes): 1408 Tunable (md_write_limit): 768 Tunable (md_sync_window): 512 These settings will consume 38MB of RAM on your hardware. Unthrottled values for your server came from Test 21 with a speed of 76.4 MB/s Tunable (md_num_stripes): 1424 Tunable (md_write_limit): 768 Tunable (md_sync_window): 520 These settings will consume 38MB of RAM on your hardware. This is 3MB more than your current utilization of 35MB. NOTE: Adding additional drives will increase memory consumption. In unRAID, go to Settings > Disk Settings to set your chosen parameter values.
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