eG Help

This internal test monitors the usage of buffer memory of a Microsoft SQL Server. The measures made by this test are as follows:

Measurement	Description	Measurement Unit	Interpretation
Cache_hit_ratio	This value indicates the percentage of pages found in the cache without having to read from disk.	Percent	The ratio is the total number of cache hits divided by the total number of cache lookups since SQL Server was started. Because reading from the cache is less expensive than reading from disk, you want the ratio to be high. The higher this value is, the better. Generally, you can increase the cache hit ratio by increasing the amount of memory available to the SQL Server. The detailed diagnosis capability, if enabled, provides the cache hit ratio for each cache type.
Cache_object_count	This value indicates the number of objects found in the cache currently.	Number	The higher the count, the better the performance of the server, as it does not need to read the requested object from disk. The detailed diagnosis capability, if enabled, provides the object count for each cache type.
Log_cache_hit_ratio	This value indicates the percentage of log cache reads satisfied from the log cache.	Percent	A good cache hit ratio indicates that the log cache is performing well and a low value indicates that the server needs to be tuned.