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  • [RC7] High memory usage - ARC ZFS relative

    H3ms

    By H3ms

      • Solved Minor

    Hi,

     

    I'm currently running the rc7 version of unraid 6.12.

    My system seems to be very instable since the update (I was on rc6 without any issue).

       - GUI stop working correctly (no more realtime monitoring on the dashboard after few minutes).

       - Memory usage is very high

       - Arc limit size seems to not be taking in account (set at 1/8 of max memory, so 8 gig for 64 gig) using 24 gig after few hour on 64gig (see files).

     

    Quote

    cat /boot/config/modprobe.d/zfs.conf
          options zfs zfs_arc_max=8589934592

    Quote

    cat /etc/modprobe.d/zfs.conf
            options zfs zfs_arc_max=8589934592

     

    Quote

     

    cat /proc/spl/kstat/zfs/arcstats

              size                            4    17698968720

     

     

    Diag file attached.

     

    Thx for the help.

    arc_size_15minutes.txt arc_size_30minutes.txt arc_size_few_hours.txt nas-icarus-diagnostics-20230611-0046.zip

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    H3ms
    25 minutes ago, JorgeB said:

    This should be fixed in rc8, please re-test.

    Updated to rc8.

     

    /sys/module/zfs/parameters/zfs_arc_max is now set with the right value = 8589934592

     

    Before it was set at 0 (so no limit?)

     

    Wait & see :)

    Thx.

    • Like 1
    Link to comment
    H3ms

    10H after update to rc8.

    Problem seems to be solved.

      

    From cat /proc/spl/kstat/zfs/arcstats
		size     4    8589645536

     

    Thx ;)

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