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  1. TrueNAS
  2. NAS-109419

top -m io command shows no read/write metrics under 12.0

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    • Impact:
      Medium

      Description

      Running top -m io (or pressing m interactively) shows data initially but upon first refresh read/write columns are always zero. VCSW, IVCSW and occasionally FAULT show data properly.

      Tested and reproduced under 12.0 release, U1.1 and U2. Tried 3 different desktop class machines and a hyper-v virtual machine.

      Tested under 11.3 and data shows properly. Tested under FreeBSD 12.2 and data shows properly indicating TrueNAS specific issue.

      zpool iostat 1 shows plenty of IO at the volume level but unable to troubleshoot at the process level.

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        1. debug-freenas-20210216125105.tgz
          1.20 MB
          Edward Theodore
        2. Screenshot 2021-02-15 161729.png
          53 kB
          Edward Theodore

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                Assignee:
                ryan Ryan Moeller
                Reporter:
                eddiert Edward Theodore
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                  Updated:
                  Resolved: