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jonasdegent

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    [6.8.3] Speed bottlenecks?

    in General Support

    Posted

    9GB file. It was faster, a lot faster (240MB/s) and then it passes the 30% mark, it just drops dramatically to 55~80MB/s going up and down... Downloading from the array was fast all the way (230MB/s).

    Could this be HBA related? Should I try to flash it to newer firmware? I don't know how but I'll probably figure it out.

     

    [6.8.3] Speed bottlenecks?

    in General Support

    Posted · Edited by jonasdegent

    I'm relatively new to Unraid (and Linux) so be gentle. As a photographer and always in need of data storage, I decided to replace my 2 old Synology's with one big server. Might keep one just to have another backup together with one that is not in my home.

     

    I upgraded my network with 2 Netgear 10GbE switches (both with 2x 10GbE ports). I am still on cat6 cables but plan to upgrade that to 6A, just to rule out problems there. My hardware is a Ryzen 5 3600, 16GB RAM, Asrock Rack X470D4U2-2T, a HBA from Broadcom 9400-16i, a Nvidia 1660GTX for the Plex transcoding, a 960 Pro 512GB as cache and for now 4x WD Gold 14TB's. So I might expect a pretty decent performing server, right?

     

    When I test speeds with iPerf3 and Diskspeed everything seems normal. I get 3.9Gbit/s network speeds (not full full speed but decent enough considering the length and being cat6) and my disks seem normal with 255MB/s (with no drops) and 1.1Gbit/s for the cache drive.

     

    When I move something from my computer (SMB shares) to the server (share with cache only) I'm averaging 50~70MB/s. The parity sync is at ~90MB/s. I get the same speeds when I pause the sync. When I move something to the array I get like 140MB/s in the beginning (first 30%) just to drop down to 50~70MB/s. Turbo write is on. I'm not expecting GB/s here but this just seem slow?

    I have 2 10GbE ports and one Gbit port on the motherboard but I can only use one 10GbE for now. I'm not going to invest into a new very expensive 10GbE switch just to get "under Gbit" speeds. So I'm kinda out of ideas for now.

     

    Not sure if there's something wrong in the hardware (RAM? Memtest seemed fine) or network settings (which I don't understand fully, bonding is on but I'm only running one port?) so I turn to the forum. I included the diagnosis file. 

    marcel-diagnostics-20200323-1010.zip

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