| Measurement |
Description |
Measurement Unit |
Interpretation |
| cleanPages |
Indicates the number of cache clean pages in this storage processor. |
Number |
|
| dirtyPages |
Indicates the number of dirty cache pages in this storage processor. |
Number |
These are pages in write cache that have received new data from hosts but have not yet been flushed to disk. While a high value (i.e., a value between 60-80% of the write cache) for this measure is good as it increases the chance of a read coming from cache or additional writes to the same block of data being absorbed by the cache, a very high value - i.e., a value equal to or close to the total number of pages in the write cache - is a sign of bad health, as it indicates that the write cache is over-stressed. |
| flushed |
Indicates the rate at which data blocks were flushed into the cache of this storage processor. |
Blocks/sec |
|
| flushes |
Indicates the rate at which flush operations were performed on the cache of this storage processor. |
Operations/sec |
|
| freePages |
Indicates the number of free cache pages in this storage processor. |
Number |
|
| readHits |
Indicates the maximum number of read requests serviced by the cache of this storage processor per second. |
Hits/sec |
The detailed diagnosis of this measure lists the time, name of the storage processor and the read hits during that time period. |
| readMisses |
Indicates the maximum number of read requests that failed to be serviced from the cache of this storage processor per second. |
Misses/sec |
The detailed diagnosis of this measure lists the time, name of the storage processor and the read misses during that time period. |
| writeHits |
Indicates the maximum number of write requests to this storage processor that were serviced by the cache per second. |
Hits/sec |
The detailed diagnosis of this measure lists the time, name of the storage processor and the write hits during that time period. |
| writeMisses |
Indicates the maximum number of write requests that failed to be serviced to the cache of this storage processor per second. |
Misses/sec |
The detailed diagnosis of this measure lists the time, name of the storage processor and the write misses during that time period. |
| dirtyBytes |
Indicates the maximum amount of dirty data available in the dirty cache pages of this storage processor. |
MB |
|
| avgReadHits |
Indicates the average rate of read requests to this storage processor that were serviced by the cache. |
Hits/sec |
|
| avgReadMisses |
Indicates the average number of read requests that failed to be serviced from the cache of this storage processor per second. |
Misses/sec |
|
| avgWriteHits |
Indicates the average rate of write requests to this storage processor that were serviced by the cache. |
Hits/sec |
|
| avgWriteMisses |
Indicates the average number of write requests that failed to be serviced to the cache of this storage processor per second. |
Misses/sec |
|
| avgDirtyBytes |
Indicates the average amount of dirty data available in the dirty cache pages of this storage processor. |
MB |
|
| freePagesPect |
Indicates the percentage of free cache pages. |
Percentage |
|
| dirtyPagesPect |
Indicates the percentage of dirty cache pages. |
Percentage |
|