SM2 reports

PCA CACHE report

READ H-R. (%)

Percentage of hits based on the total number of read operations to

 

be executed as fast reads

WRITE (1/S)

Total number of write operations (in I/Os per second)

FAST W. (1/S)

Total number of high-speed write operations (in I/Os per second)

C-OVER (1/S)

Number of unsuccessful attempts to use the cache due to a cache

 

overrun (in I/Os per second)

Notes

If a miss occurs during a caching read operation ("fast read"), the data is read from disk and (in contrast to a read operation) stored in the cache. Cache overruns can only occur in write operations. In the event of an overrun, the write operation bypasses the cache and is performed directly on the disk.

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Siemens U3585-J-Z125-8-76 1, SM2 monitoring system manual PCA Cache report, Write 1/S