バージョン 33 から バージョン 34 における更新: Virtuoso

差分発生行の前後
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更新日時:
2012/07/11 14:44:06 (12 年 前)
更新者:
wu
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  • Virtuoso

    v33 v34  
    1616 
    1717=== Virtuoso 配置 === #Configure 
     18 
     19About Virtuoso index: 
     20 
     21The index scheme consists of the following indices: 
     22 
     23 * PSOG - primary key. 
     24 * POGS - bitmap index for lookups on object value. 
     25 * SP - partial index for cases where only S is specified. 
     26 * OP - partial index for cases where only O is specified. 
     27 * GS - partial index for cases where only G is specified. 
     28 
    1829 
    1930* NumberOfBuffers:  the amount of RAM used by Virtuoso to cache database files. This has a critical performance impact and thus the value should be fairly high for large databases. Exceeding physical memory in this setting will have a significant negative impact. For a database-only server about 65% of available RAM could be configured for database buffers. Each buffer caches one 8K page of data and occupies approximately 8700 bytes of memory.