Struct Options

pub struct Options { /* private fields */ }

Options to tune the performance of the parser, generally you can stick to the defaults unless you run into memory issues.

Implementations

impl Options

pub fn order_output(self) -> Self

Ensures that the output of the BlockParser::parse function will be in same order as the [BlockHeader] passed in.

BlockParser::batch will receive blocks in-order, however this requires running that function on a single thread, rather than multiple threads.

pub fn num_threads(self, n: usize) -> Self

Set the number of threads to handle the processing steps.

Typically limited by disk I/O and the number of threads your system can handle, increasing it generally improves speed at the cost of memory usage.

pub fn batch_size(self, n: usize) -> Self

Number of items passed into BlockParser::batch.

If you need to access shared state through an Arc<Mutex<_>> a bigger batch size can improve performance, at the cost of more memory depending on the size of BlockParser::extract

pub fn channel_buffer_size(self, n: usize) -> Self

Set the number of size of the buffers used between channels.

Doesn’t have a significant impact on speed/memory so long as it’s set high enough.

pub fn log_at(self, n: usize) -> Self

Set how many blocks to parse before printing a log message out.

To disable logging, simply set log_at to usize::MAX, required to be at least 1K

Trait Implementations

impl Default for Options

Defaults that should be close to optimal for most parsers

order_output determines whether the results will be returned in-order num_threads: 128 should be enough for most systems regardless of disk speed batch_size: 10 improves batch performance without using too much memory channel_buffer_size: 100 increasing beyond this usually just increases memory usage log_at: 10_000 will produce logs every few seconds without spamming output

fn default() -> Self

Returns the “default value” for a type.