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     <h4 class="title">
      <a name="mysql-cluster-ndbinfo-disk-write-speed-base">
      </a>
      25.6.17.28 The ndbinfo disk_write_speed_base Table
     </h4>
    </div>
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  <a class="indexterm" name="idm46045089525856">
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  <p>
   The
   <code class="literal">
    disk_write_speed_base
   </code>
   table provides base
        information about the speed of disk writes during LCP, backup,
        and restore operations.
  </p>
  <p>
   The
   <code class="literal">
    disk_write_speed_base
   </code>
   table contains the
        following columns:
  </p>
  <div class="itemizedlist">
   <ul class="itemizedlist" style="list-style-type: disc; ">
    <li class="listitem">
     <p>
      <code class="literal">
       node_id
      </code>
     </p>
     <p>
      Node ID of this node
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       thr_no
      </code>
     </p>
     <p>
      Thread ID of this LDM thread
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       millis_ago
      </code>
     </p>
     <p>
      Milliseconds since this reporting period ended
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       millis_passed
      </code>
     </p>
     <p>
      Milliseconds elapsed in this reporting period
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       backup_lcp_bytes_written
      </code>
     </p>
     <p>
      Number of bytes written to disk by local checkpoints and
            backup processes during this period
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       redo_bytes_written
      </code>
     </p>
     <p>
      Number of bytes written to REDO log during this period
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       target_disk_write_speed
      </code>
     </p>
     <p>
      Actual speed of disk writes per LDM thread (base data)
     </p>
    </li>
   </ul>
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