#### 23.6.14.31 The ndbinfo diskstat Table

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 The `diskstat` table provides information about writes to Disk Data tablespaces during the past 1 second.

 The `diskstat` table contains the following columns:

* `node_id`

   Node ID of this node

* `block_instance`

   ID of reporting instance of [`PGMAN`](https://dev.mysql.com/doc/ndb-internals/en/ndb-internals-kernel-blocks-pgman.html)

* `pages_made_dirty`

   Number of pages made dirty during the past second

* `reads_issued`

   Reads issued during the past second

* `reads_completed`

   Reads completed during the past second

* `writes_issued`

   Writes issued during the past second

* `writes_completed`

   Writes completed during the past second

* `log_writes_issued`

   Number of times a page write has required a log write during the past second

* `log_writes_completed`

   Number of log writes completed during the last second

* `get_page_calls_issued`

   Number of `get_page()` calls issued during the past second

* `get_page_reqs_issued`

   Number of times that a `get_page()` call has resulted in a wait for I/O or completion of I/O already begun during the past second

* `get_page_reqs_completed`

   Number of `get_page()` calls waiting for I/O or I/O completion that have completed during the past second

##### Notes

 Each row in this table corresponds to an instance of [`PGMAN`](https://dev.mysql.com/doc/ndb-internals/en/ndb-internals-kernel-blocks-pgman.html); there is one such instance per LDM thread plus an additional instance for each data node.

