08 Jul 19, Eugene Grosbein writes to Slawa Olhovchenkov:
EG>>> При 16% экономии сжатие не нужно независимо от размера блоков. EG>>> И вроде бы я читал, что recordsize лишь ограничивает размер блока, EG>>> он может быть и меньше - независимо от включения компрессии. SO>> ты читал неправильно
EG> Specifies a suggested block size for files in the file system.
EG> This property is designed solely for use with database workloads EG> that access files in fixed-size records. ZFS automatically adjust EG> block sizes according to internal algorithms optimized for typical EG> access patterns. For databases that create very large files EG> but access the files in small random chunks, these algorithms EG> may be suboptimal.
EG> Specifying a recordsize greater than or equal to the record size EG> of the database can result in significant performance gains. EG> Use of this property for general purpose file systems is strongly EG> discouraged, and may adversely affect performance. The size specified must EG> be a power of two greater than or equal to 512 and less than or equal EG> to 128 Kbytes. Changing the file system's recordsize only affects files EG> created afterward. Existing files are unaffected.
ну и в каком месте тут такое написанно?
... Hе все ври, что знаешь. --- GoldED+/BSD 1.1.5-b20110223-b20110223 * Origin: (2:5030/500)
