User's Manual

Summary Report
Header
Description
CacheIO-DiskIO Shows the number of bytes read and written to the cache device minus the number of bytes
read and written to the disk. A positive value shows I/O activity is being served mostly by the
cache while a negative value indicates more disk I/O is being performed than cache I/O.
Avg I/O size Shows the average I/O size for the DAS disk.
Disk Name Shows the name of the DAS disk.
IOPS Shows the number of IOPS for the DAS disk.
MB/s Shows the read/write in MB/s for the DAS disk.
Avg I/O size Shows the average I/O size for the DAS disk.
fldcstat Command Verbose Report
The verbose report provides the following additional statistical data:
Verbose Report
Header
Description
ops Shows the actual cache I/O operations per second (not normalized to 1024 bytes per
operation).
Thread Shows the percentage of actual cache I/O operations that were read operations.
MB Shows the data in MBs of read/write cache I/O since the last sample.
evictMBs Shows the data in MBs evicted from the cache to allow the cache to be used for caching other
I/O.
dirtyMB Shows the amount of dirty bytes in the cache.
Ops Shows the actual disk I/O operations per second (not normalized to 1024 byte operations).
%read Shows the percentage of actual disk I/O operations that were read operations.
MB Shows the data in MBs of read/write disk I/O since the last sample.
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