Sun Microsystems 820434310 manual File Cache Information file-cache, Keep Alive keep-alive

HTTP Service Settings

File Cache Information (file-cache)

The file cache caches static content so that the server handles requests for static content quickly. The file-cache section provides statistics on how your file cache is being used.

For information on tuning the file cache, see“HTTP File Cache” on page 67.

■Number of Hits on Cached File Content

■Number of Cache Entries

■Number of Hits on Cached File Info

■Heap Space Used for Cache

■Number of Misses on Cached File Content

■Cache Lookup Misses

■Number of Misses on Cached File Content

■Max Age of a Cache Entry: The maximum age displays the maximum age of a valid cache entry.

■Max Number of Cache Entries

■Max Number of Open Entries

■Is File Cached Enabled?: If the cache is disabled, the other statistics are not displayed. The cache is enabled by default.

■Maximum Memory Map to be Used for Cache

■Memory Map Used for cache

■Cache Lookup Hits

■Open Cache Entries: The number of current cache entries and the maximum number of cache entries are both displayed. A single cache entry represents a single URI. This is a tunable setting.

■Maximum Heap Space to be Used for Cache

Keep Alive (keep-alive)

The Admin Console provides the following performance-related keep-alive statistics:

■Connections Terminated Due to ClientConnection Timed Out

■Max Connection Allowed in Keep-alive

■Number of Hits

■Connections in Keep-alive Mode

■Connections not Handed to Keep-alive Thread Due to too Many Persistent Connections

■The Time in Seconds Before Idle Connections are Closed

■Connections Closed Due to Max Keep-alive Being Exceeded

Chapter 3 • Tuning the Enterprise Server 63