April 21, 20179 yr Hi my server hans 4 x 4tb disk and a 128gb SSD for cache, and it keep slowing down to 39mb/s after a short while, what i did current smb : max protocol = SMB2_02 1-Change NIC mtu do 9000 (unRAID server and any other computer with a 10GbE NIC) 2-Go to Settings -> Global Share Settings -> Tunable (enable direct IO): set to Yes and i transfer from a 256gb SSD windows 10 is there anything ells i need to set ? littlebett-diagnostics-20170421-1427.zip
April 21, 20179 yr You have an unusually large number of user shares, and most are set to not use cache, so my guess is you are writing directly to the array, and your speed is typical for parity writes. Are you sure you don't have some apps misconfigured that has created so many user shares?
April 21, 20179 yr Author just installed ssd trim and ran "fstrim -v /mnt/cache" /mnt/cache: 52.6 GiB (56447995904 bytes) trimmed but still the same
April 21, 20179 yr 5 minutes ago, darkgeej said: Eds_D_Drive and cache is set to : yes Not according to your diagnostics. E---------e.cfg # Generated settings: shareComment="" shareInclude="" shareExclude=""shareUseCache="no" shareCOW="auto" shareAllocator="highwater" shareSplitLevel="" shareFloor="0" shareExport="e" shareSecurity="public" shareReadList="" shareWriteList="" shareExportNFS="-" shareExportNFSFsid="0" shareSecurityNFS="public" shareHostListNFS="" shareExportAFP="-" shareSecurityAFP="public" shareReadListAFP="" shareWriteListAFP="" shareVolsizelimitAFP="" shareVoldbpathAFP=""
April 21, 20179 yr Author testet the speed between my ssd and my little raid system on same pc, and its about 350mb/s there
April 21, 20179 yr 25 minutes ago, darkgeej said: testet the speed between my ssd and my little raid system on same pc, and its about 350mb/s there So it's slow copying from where?
April 21, 20179 yr Test with this script to rule out any network issue, copy script to flash drive root, then on the console type: /boot/write_speed_test.sh /mnt/cache/test.dat write_speed_test.sh
April 21, 20179 yr Author 2217725952 bytes (2.2 GB, 2.1 GiB) copied, 5.00134 s, 443 MB/s 4116924+0 records in 4116924+0 records out 4215730176 bytes (4.2 GB, 3.9 GiB) copied, 10.006 s, 421 MB/s 4684320+0 records in 4684320+0 records out 4796743680 bytes (4.8 GB, 4.5 GiB) copied, 15.0118 s, 320 MB/s 5292437+0 records in 5292437+0 records out 5419455488 bytes (5.4 GB, 5.0 GiB) copied, 20.017 s, 271 MB/s 5691889+0 records in 5691889+0 records out 5828494336 bytes (5.8 GB, 5.4 GiB) copied, 25.0254 s, 233 MB/s 5934741+0 records in 5934741+0 records out 6077174784 bytes (6.1 GB, 5.7 GiB) copied, 30.0334 s, 202 MB/s 6122769+0 records in 6122769+0 records out 6269715456 bytes (6.3 GB, 5.8 GiB) copied, 35.0373 s, 179 MB/s 6321953+0 records in 6321953+0 records out 6473679872 bytes (6.5 GB, 6.0 GiB) copied, 40.0474 s, 162 MB/s 6545669+0 records in 6545669+0 records out 6702765056 bytes (6.7 GB, 6.2 GiB) copied, 45.0574 s, 149 MB/s 6827893+0 records in 6827893+0 records out 6991762432 bytes (7.0 GB, 6.5 GiB) copied, 50.0624 s, 140 MB/s 7104072+0 records in 7104072+0 records out 7274569728 bytes (7.3 GB, 6.8 GiB) copied, 55.0643 s, 132 MB/s 7393261+0 records in 7393261+0 records out 7570699264 bytes (7.6 GB, 7.1 GiB) copied, 60.0694 s, 126 MB/s 7950489+0 records in 7950489+0 records out 8141300736 bytes (8.1 GB, 7.6 GiB) copied, 65.0739 s, 125 MB/s 8532784+0 records in 8532784+0 records out 8737570816 bytes (8.7 GB, 8.1 GiB) copied, 70.0805 s, 125 MB/s 8916461+0 records in 8916461+0 records out 9130456064 bytes (9.1 GB, 8.5 GiB) copied, 75.0872 s, 122 MB/s 9133673+0 records in 9133673+0 records out 9352881152 bytes (9.4 GB, 8.7 GiB) copied, 80.1044 s, 117 MB/s 9312523+0 records in 9312523+0 records out 9536023552 bytes (9.5 GB, 8.9 GiB) copied, 85.1004 s, 112 MB/s 9709388800 bytes (9.7 GB, 9.0 GiB) copied, 90.1114 s, 108 MB/s 9650409+0 records in 9650409+0 records out 9882018816 bytes (9.9 GB, 9.2 GiB) copied, 95.1123 s, 104 MB/s 9820049+0 records in 9820049+0 records out 10055730176 bytes (10 GB, 9.4 GiB) copied, 100.121 s, 100 MB/s 9536023552 bytes (9.5 GB, 8.9 GiB) copied, 85.1004 s, 112 MB/s 9481825+0 records in 9481825+0 records out 9709388800 bytes (9.7 GB, 9.0 GiB) copied, 90.1114 s, 108 MB/s 9650409+0 records in 9650409+0 records out 9882018816 bytes (9.9 GB, 9.2 GiB) copied, 95.1123 s, 104 MB/s 9820049+0 records in 9820049+0 records out 10055730176 bytes (10 GB, 9.4 GiB) copied, 100.121 s, 100 MB/s 9992333+0 records in 9992333+0 records out 10232148992 bytes (10 GB, 9.5 GiB) copied, 105.129 s, 97.3 MB/s 10000000+0 records in 10000000+0 records out 10240000000 bytes (10 GB, 9.5 GiB) copied, 105.347 s, 97.2 MB/s write complete, syncing
April 21, 20179 yr 1 minute ago, darkgeej said: nice script btw, looks like i slows more and more down That's normal, initial writes are RAM cached, if copying from the PC to unRAID is slower than that there's a network issue or the problem is the source PC. Edited April 21, 20179 yr by johnnie.black
April 21, 20179 yr Author I've just installed the cards, and they are linked directly together with a brand new fibre cabel, the windows machine is a I7 with 16gb ram and fully updated,
April 21, 20179 yr Doesn't mean it's not the problem, it can be a windows problem, test with another PC
April 21, 20179 yr Author just tried to get a fill from the unraid, and its about the same, so it goes both ways
April 21, 20179 yr Author well i can't test with the fiber part, because my other machine is a mac mini but its so odd since local on the pc i get a higher speed, I've install the fiber cards in the PCIE port same size as the one for the GPU , could that be a problem? and it startes out with 450mb/s for about 10sec Edited April 21, 20179 yr by darkgeej
April 21, 20179 yr 11 minutes ago, darkgeej said: and it startes out with 450mb/s for about 10sec Your SSD won't be able to sustain 450MB/s, it should max out at about 100MB/s or below, you'll need a faster SSD for that. To check it's real writing speed without RAM cache type these in the console, one at a time, and run the script again: sysctl vm.dirty_ratio=1 sysctl vm.dirty_background_ratio=1
April 21, 20179 yr Author just ran my Perfect disk software, and it gave a bit more, to from 60 to 180 Oo
April 21, 20179 yr Author ooo so. my old 128gb ssd is just way to slow? well that could explane it, so what is good for cache ? i guess ill go for a 256gb, since im the only user on the lan
April 21, 20179 yr 850 EVO 250GB can sustain writes at close to 300MB/s 850 EVO 500GB can sustain writes at close to 500MB/s
April 21, 20179 yr Author yar with that on console, it startes at 360 and drops fast, 295912960 bytes (7.3 GB, 6.8 GiB) copied, 40.0424 s, 182 MB/s Edited April 21, 20179 yr by darkgeej
Archived
This topic is now archived and is closed to further replies.