DAOS-specific user-tunable settings for storing ntuples.

Definition at line 36 of file RNTupleWriteOptionsDaos.hxx.

Public Member Functions
	~RNTupleWriteOptionsDaos () override=default

std::unique_ptr< RNTupleWriteOptions >	Clone () const override

uint32_t	GetMaxCageSize () const

const std::string &	GetObjectClass () const

void	SetMaxCageSize (uint32_t cageSz)
	Set the upper bound for page concatenation into cages, in bytes.

void	SetObjectClass (const std::string &val)
	Set the object class used to generate OIDs that relate to user data.

Public Member Functions inherited from ROOT::RNTupleWriteOptions
virtual	~RNTupleWriteOptions ()=default

std::size_t	GetApproxZippedClusterSize () const

std::uint32_t	GetCompression () const

bool	GetEnablePageChecksums () const

bool	GetEnableSamePageMerging () const

std::size_t	GetInitialUnzippedPageSize () const

std::uint64_t	GetMaxKeySize () const

std::size_t	GetMaxUnzippedClusterSize () const

std::size_t	GetMaxUnzippedPageSize () const

std::size_t	GetPageBufferBudget () const

bool	GetUseBufferedWrite () const

bool	GetUseDirectIO () const

EImplicitMT	GetUseImplicitMT () const

std::size_t	GetWriteBufferSize () const

void	SetApproxZippedClusterSize (std::size_t val)

void	SetCompression (RCompressionSetting::EAlgorithm::EValues algorithm, int compressionLevel)

void	SetCompression (std::uint32_t val)

void	SetEnablePageChecksums (bool val)
	Note that turning off page checksums will also turn off the same page merging optimization (see tuning.md)

void	SetEnableSamePageMerging (bool val)

void	SetInitialUnzippedPageSize (std::size_t val)

void	SetMaxUnzippedClusterSize (std::size_t val)

void	SetMaxUnzippedPageSize (std::size_t val)

void	SetPageBufferBudget (std::size_t val)

void	SetUseBufferedWrite (bool val)

void	SetUseDirectIO (bool val)

void	SetUseImplicitMT (EImplicitMT val)

void	SetWriteBufferSize (std::size_t val)

Private Attributes
uint32_t	fMaxCageSize = 16 * RNTupleWriteOptions::fMaxUnzippedPageSize
	The maximum cage size is set to the equivalent of 16 uncompressed pages - 16MiB by default.

std::string	fObjectClass {"SX"}

Additional Inherited Members
Public Types inherited from ROOT::RNTupleWriteOptions
enum class	EImplicitMT { kOff , kDefault }

Static Public Attributes inherited from ROOT::RNTupleWriteOptions
static constexpr std::uint64_t	kDefaultMaxKeySize = 0x4000'0000

Protected Attributes inherited from ROOT::RNTupleWriteOptions
std::size_t	fApproxZippedClusterSize = 128 * 1024 * 1024

std::uint32_t	fCompression {RCompressionSetting::EDefaults::kUseGeneralPurpose}

bool	fEnablePageChecksums = true

bool	fEnableSamePageMerging = true

std::size_t	fInitialUnzippedPageSize = 256

std::uint64_t	fMaxKeySize = kDefaultMaxKeySize
	Specifies the max size of a payload storeable into a single TKey.

std::size_t	fMaxUnzippedClusterSize = 10 * fApproxZippedClusterSize

std::size_t	fMaxUnzippedPageSize = 1024 * 1024

std::size_t	fPageBufferBudget = 0

bool	fUseBufferedWrite = true

bool	fUseDirectIO = false

EImplicitMT	fUseImplicitMT = EImplicitMT::kDefault

std::size_t	fWriteBufferSize = 4 * 1024 * 1024