swirec_disk_cache_size
                                                    Desired maximum size of the disk and inet caches.
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                                                                     Value  | 
                                                                
                                                                     Integer: 1–INT_MAX. A reasonable range is between 1 and the maximum size of the storage disk.  | 
                                                            
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                                                                     Default  | 
                                                                
                                                                     500 (MB)  | 
                                                            
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                                                                     How to set  | 
                                                                
                                                                     In Management Station set on the Nuance recognition service. If not using Management Station, set in a Recognizer configuration file (User-nrsxx.xml).  | 
                                                            
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                                                                     Usage  | 
                                                                
                                                                     This parameter is only relevant when swirec_disk_cache_enabled is enabled. The value should always be larger than swirec_memory_cache_size.  | 
                                                            
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                                                                     Performance  | 
                                                                
                                                                     Avoids the repeated cost of compiling source grammars by keeping more grammars in the disk cache. (Compilation is the highest cost of grammar load operations.) This is a system-wide parameter. The setting applies to all applications using Recognizer.  | 
                                                            
When the total disk usage of all entries in the disk cache exceeds this number, the Recognizer writes a message to the diagnostic log and the least-recently-used cache entries are removed (unless locked) until the cache size reaches swirec_disk_cache_low_water_mark.
Related parameter
See the full list of caching parameters in Fetching and caching parameters.