agppro Posted December 7, 2019 Share Posted December 7, 2019 (edited) Hi, I have unRAID 6.7.2 with this hardware AMD Ryzen 7 2700 16 GB RAM 3 WD RED 4TB (one in parity) BTRFS 1 Seagate 2 TB (excluded from shared folder) BTRFS All tunables in default The problem is, when I copy a bunch of files from Windows 10 1909 to unraid shared folder on WD RED disks it goes perfectly at 112 MB/s, but when it finish to copy one file and starts the next one, it stops like 10 seconds and then continues at 112 MB/s. On the unRAID Dashboard I can see, sometimes one core is at 100%, but not allways What can I do without adding cache to this problem dissapear? Thanks Edited December 8, 2019 by agppro Quote Link to comment
Squid Posted December 7, 2019 Share Posted December 7, 2019 Sounds like filesystem overhead. Especially noticeable if you're copying many small files concurrently. Large files the net time difference isn't significant. Quote Link to comment
agppro Posted December 8, 2019 Author Share Posted December 8, 2019 And what I can do for fix? Thanks for your reply Quote Link to comment
JorgeB Posted December 8, 2019 Share Posted December 8, 2019 Are you sure it's actually stopped? It happens to me sometime where explorer shows what appears to be a stalled transfer but Unraid writing continuasly, explorer is just not updating real time, you can check on the main page after toggling speed display or with the dynamix stats plugin. Quote Link to comment
agppro Posted December 8, 2019 Author Share Posted December 8, 2019 It happens all the time, you can see the Windows 10 task manager statistics Quote Link to comment
JorgeB Posted December 8, 2019 Share Posted December 8, 2019 That's not normal, post the diags, maybe something visible there. Also, is this using turbo write? Quote Link to comment
agppro Posted December 8, 2019 Author Share Posted December 8, 2019 It fixed! I read the turbo write post and I changed in Unraid -> Settings -> Disk Settings -> Tunable (md_write_method) from auto to reconstruct write Now it fixed completely with small files, and with big files "like 6 GB" now it stops for half second; I understand Is calculating the parity and I think is now normal to the parity system of BTRFS Thank you so much for your attention! Quote Link to comment
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