Struct exocore_chain::DirectoryChainStoreConfig

pub struct DirectoryChainStoreConfig {
    pub segment_over_allocate_size: u64,
    pub segment_max_size: u64,
    pub segment_max_open_mmap: usize,
    pub operation_index_max_memory_items: usize,
}

Configuration for directory based chain persistence.

Fields

segment_over_allocate_size: u64

Segment over allocation, in bytes. When resizing a segment, this amount of bytes will be allocated over the required len to prevent remapping the segment too often.

segment_max_size: u64

Maximum size in bytes per segment. This is a soft limit since the last block could overflow that maximum. This should be small enough so that a few segments can fit in allocable virtual space on 32b systems. See segment_max_open for maximum concurrently opened segments.

segment_max_open_mmap: usize

Maximum number of segments concurrently mmap. On 64b systems, where virtual memory isn’t a problem, this can be high. But on 32b systems, one should aim to have maximum ~1-2gb of concurrently mmap segments. See segment_max_size for maximum size per segment.

operation_index_max_memory_items: usize

Maximum number of operations to keep in memory in the operation index before flushing into a sorted file.

Trait Implementations

impl Clone for DirectoryChainStoreConfig

fn clone(&self) -> DirectoryChainStoreConfig

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DirectoryChainStoreConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DirectoryChainStoreConfig

fn default() -> Self

Returns the “default value” for a type.

impl From<ChainConfig> for DirectoryChainStoreConfig

fn from(proto: ChainConfig) -> Self

Performs the conversion.

impl Copy for DirectoryChainStoreConfig