| Measurement |
Description |
Measurement
Unit |
Interpretation |
| File_cache_memory |
The data used for the user-mode file cache |
KB
|
An unusually high value may indicate a sudden increase of memory usage in file cache.
|
| Files_cached |
The number of files, the content of which is in the user-mode cache |
Number
|
|
| Metadata_cached |
The metadata information blocks currently in the user-mode cache |
Number
|
|
| URIs_cached |
The number of URI information blocks in the user-mode cache |
Number
|
|
| File_cache_hits |
The number of successful lookups in the user-mode file cache during the last measurement period |
Number
|
A consistent decrease in the value of this measure is indicative of an increase in direct disk accesses. This is a cause for concern.
|
| File_cache_misses |
The number of unsuccessful lookups in the user-mode file cache during the last measurement period |
Number
|
A consistent increase in the value of this measure is indicative of an increase in direct disk accesses. This is a cause for concern.
|
| File_cache_hit_ratio |
The ratio between the file cache hits and file cache misses |
Percent
|
A very low percentage indicates that files requested are being directly accessed from the disk and not from the file cache.
|