• 6.10.0-RC2 - Reduced read speeds, but normal writes


    stuoningur
    • Minor

    When running the current prerelease 6.10.0-RC2, I noticed my reads are limited to about 750Mb/s, regardless if from the array or ssd cache. While the writes are normal and maxing out my 1 Gb/s network.

     

    I can reliably reproduce the issue, returning to the stable release the reads return to 1Gb/s, switching back to the prerelease back to the limited speed. Attached my diagnostics.

    pantimos-diagnostics-20220307-2154.zip




    User Feedback

    Recommended Comments

    bonienl

    Posted (edited)

    My set up has a 10G connection and reading a file (16 GB) from the array goes at maximum speed of 240-250 MB/s (1.9 - 2.0 Gb/s), which is about the highest speed the HDD can do. It certainly is possible to get high speeds in 6.10

     

    image.png.0a2660849176a752f087683903e52679.png

     

    Your log shows several retransmissions due to connection failure. I don't know if this is RealTek related.

    You should try rc3 when it comes out, it has updated network drivers.

     

    Edited by bonienl
    Link to comment

    There are no strange things in your log.

    A couple of things you can try

    1. Disable bonding - you have a single interface and bonding is not applicable/needed

    2. Install the "Tips and Tweaks" plugin and disable the rx/tx flow control

    3. Change your RealTek NIC for an Intel NIC

     

    Link to comment
    1 hour ago, bonienl said:

    There are no strange things in your log.

    A couple of things you can try

    1. Disable bonding - you have a single interface and bonding is not applicable/needed

    2. Install the "Tips and Tweaks" plugin and disable the rx/tx flow control

    3. Change your RealTek NIC for an Intel NIC

     

    Disabling bonding seems to have done the trick. Thank you. Seems like the newer drivers don't play that nicely with the default settings.

    Link to comment


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