Dcachesize
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Dcachesize


In a Virtuozzo environment, dacachesize is a container parameter that represents the total size of inode and dentry structures locked in memory. An inode is a data structure that stores metadata or in other words information about files. A dentry is what relates inode numbers to file names and plays a role in directory caching, allowing for faster access of frequently used files.

Dcachesize imposes a limit causing file operations to sense memory shortage and return an error to applications. This protects against memory shortages during critical system operations that shouldn’t fail.

Hitting this value occasionally is not something that should be worried about. If you are hitting this value quite often, you may have an application on your system that is performing too many file operations at once or not closing opened files properly.

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