Web Service Cache

The Web Service Cache service monitors the performance of a Microsoft IIS server’s cache. The service helps you to understand how the IIS instance is performing.

This service queries the win32_perfformatteddata_w3svc_webservicecache WMI class for the following values:

• CurrentFilesCached
• CurrentFileCacheMemoryUsage
• CurrentMetadataCached
• CurrentURIsCached
• FileCacheHitsPercent
• KernelURICacheHitsPercent
• MetadataCacheHitsPercent
• OutputCacheCurrentHitsPercent
• URICacheHitsPercent

Service Type	WMI
Instances on a Device	100
Supported Systems/Applications	Devices running Microsoft’s IIS Server
Device Class	Server – Windows, Workstations – Windows, Laptops - Windows
Monitored By	Windows agent
Scan Interval	5 minutes

Metrics

Metric	Description
Current File Cache Memory Usage	Current number of bytes used for the user-mode file cache.
Current Files Cached	Current number of files whose content is in the user-mode cache.
Current Metadata Cached	Current number of metadata information blocks currently in the user-mode cache.
Current URIs Cached	URI information blocks currently in the user-mode cache.
File Cache Hits Percent	The ratio of user-mode file cache hits to total cache requests since service startup.
Metadata Cache Hits Percent	The ratio of user-mode metadata cache hits to total cache requests since service startup.
Output Cache Current Hits Percent	Output Cache current hit ratio. Calculated as (H)/(H+M) where H and M represent Hits and Misses in previous sample interval respectively.
URI Cache Hits Percent	The ratio of user-mode URI Cache Hits to total cache requests since service startup.
Kernel URI Cache Hits Percent	The ratio of kernel URI cache hits to total cache requests since service startup.