This page shows IO requests and latency to the disks on the Exadata Storage Servers (cells): Flash Disks and Hard Disks.
The data is sourced from CellCLI where the objectType is CELLDISK.
Note: Spotlight on Oracle RAC may include monitoring of Exadata systems depending on the license purchased.
To open the Cell Disks page
Click Exadata | Cell Disks.
Will the charts / grid on this drilldown page be for all cells, or filtered on one cell? Select as you require.
Charts on the Cell Disks page
|Total IO by Cell Disk (Top 20)||
Total I/O requests (read and write for large and small blocks) per Cell Disk.
The cell disks with the most active IO (Top 20) are listed.
|Average Latency by Disk (Top 20)||
The average time delay experienced by reading single blocks per request from a cell disk.
The cell disks with the highest average latency (Top 20) are listed.
IO by Cell Disk Grid
|Cell Host||The name of the Exadata Storage Server (Cell) host|
The Exadata Storage Server (Cell) disk.
|Latency(ms/request)||The time delay experienced by the disk per I/O request for a single block read.|
|Total Reads/Sec||The rate of I/O read requests (number per second) to the disk.|
|Total Writes/Sec||The rate of I/O write requests (number per second) to the disk.|
|Cumulative Read Latency (seconds)||The cumulative time spent reading from the disk (single block reads).|
|Cumulative Write Latency (seconds)||The cumulative time spent writing to the disk.|
|Mbytes Read/Sec||The rate of I/O read requests (megabytes per second) to the disk.|
|Mbytes Written/Sec||The rate of I/O write requests (megabytes per second) to the disk.|
|Total Read Mbytes||The total number of megabytes read from the disk.|
|Total Write Mbytes||The total number of megabytes written to the disk.|
|Total Read Requests||The total number of read requests to the disk.|
|Total Write Requests||The total number of write requests to the disk.|