October 31, 20187 yr I've been messing around with my tunables lately. I had them modified them to the recommended settings for larger arrays to: md_num_stripes: 4096 md_sync_window: 2048 md_sync_thresh: 2000 I decided to start messing with them because I've noticed that when I'm moving around large files from my array to my cache it appears to burst reading and writing. I have 9 drives (8+parity) and 16GB of RAM so I decided to doubled md_num_stripes to 8192 (I figure that it's using 256MB for stripes now). I performed the same file move and it's now continuously reading from the array while writing to the cache. I don't know if I should also modify the sync settings? There doesn't seem to be a very good description of the tunables. And I know there's the tunables tester but it's kind of old now. I do plan on adding another 16GB of RAM so memory shouldn't be a problem. Just wondering if I can more easily determine the optimal settings for my Unraid server?
November 1, 20187 yr Community Expert 11 hours ago, Taddeusz said: There doesn't seem to be a very good description of the tunables. Original tunables: https://lime-technology.com/forums/topic/4473-unraid-server-release-45-beta8-available/?do=findComment&comment=41691 Sync thresh https://lime-technology.com/forums/topic/42369-unraid-server-release-614-available/?do=findComment&comment=416597
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