Scheduler
Scheduler is available from SANcentral>Tools> Performance.
This display allows you to see total polls and productive polls per second. The poller driver polls all of the channel boards on a storage server in a round robin scheme for I/O requests. A productive poll occurs when there is an I/O waiting to be taken from this board. An unproductive poll is when no I/O is available from the board. The top pane of the scheduler window indicates the percentage of productive polls to all polls. The bottom pane indicates the rate at which we are polling the boards per second and the number of productive polls per second.
|
Element |
Description |
|
Graph Maximum |
Enter the maximum number to use in your graph. |
|
Total (red graph line) |
Line displaying the total number of channel polls, includes productive and nonproductive. |
|
Productive (green graph line) |
Line displaying the productive number of polls, when the poller checks and discovers work to be done for the channel. |
|
Total Polls/s |
Total channel polls taken per second, includes productive and nonproductive. |
|
Productive Polls/s |
Percentage of productive polls to total channel polls per second. |
|
Status Bar |
Collection Status - Green indicates cache data is OK. Red indicates cache data is invalid. Computer name – Storage server that the information pertains to. |