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fix(db): fix number of files in db, startup hang, ram issues and flushing issues #379
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Original file line number | Diff line number | Diff line change |
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#![allow(clippy::identity_op)] // allow 1 * MiB | ||
#![allow(non_upper_case_globals)] // allow KiB/MiB/GiB names | ||
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use crate::{contract_db, Column}; | ||
use anyhow::{Context, Result}; | ||
use rocksdb::{DBCompressionType, Env, Options, SliceTransform}; | ||
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const KiB: usize = 1024; | ||
const MiB: usize = 1024 * KiB; | ||
const GiB: usize = 1024 * MiB; | ||
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pub fn rocksdb_global_options() -> Result<Options> { | ||
let mut options = Options::default(); | ||
options.create_if_missing(true); | ||
options.create_missing_column_families(true); | ||
let cores = std::thread::available_parallelism().map(|e| e.get() as i32).unwrap_or(1); | ||
options.increase_parallelism(cores); | ||
options.set_max_background_jobs(cores); | ||
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options.set_atomic_flush(true); | ||
options.set_max_subcompactions(cores as _); | ||
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options.set_max_log_file_size(10 * MiB); | ||
options.set_max_open_files(2048); | ||
options.set_keep_log_file_num(3); | ||
options.set_log_level(rocksdb::LogLevel::Warn); | ||
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let mut env = Env::new().context("Creating rocksdb env")?; | ||
// env.set_high_priority_background_threads(cores); // flushes | ||
env.set_low_priority_background_threads(cores); // compaction | ||
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options.set_env(&env); | ||
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Ok(options) | ||
} | ||
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impl Column { | ||
/// Per column rocksdb options, like memory budget, compaction profiles, block sizes for hdd/sdd | ||
/// etc. | ||
pub(crate) fn rocksdb_options(&self) -> Options { | ||
let mut options = Options::default(); | ||
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match self { | ||
Column::ContractStorage => { | ||
options.set_prefix_extractor(SliceTransform::create_fixed_prefix( | ||
contract_db::CONTRACT_STORAGE_PREFIX_EXTRACTOR, | ||
)); | ||
} | ||
Column::ContractToClassHashes => { | ||
options.set_prefix_extractor(SliceTransform::create_fixed_prefix( | ||
contract_db::CONTRACT_CLASS_HASH_PREFIX_EXTRACTOR, | ||
)); | ||
} | ||
Column::ContractToNonces => { | ||
options.set_prefix_extractor(SliceTransform::create_fixed_prefix( | ||
contract_db::CONTRACT_NONCES_PREFIX_EXTRACTOR, | ||
)); | ||
} | ||
_ => {} | ||
} | ||
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options.set_compression_type(DBCompressionType::Zstd); | ||
match self { | ||
Column::BlockNToBlockInfo | Column::BlockNToBlockInner => { | ||
options.optimize_universal_style_compaction(1 * GiB); | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. same here why 1GB? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. i can't access to the column sizes metrics as of now, so I eyeballed it I have not run any test to see if these numbers are optimal they just looked okay to me. |
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} | ||
_ => { | ||
options.optimize_universal_style_compaction(100 * MiB); | ||
} | ||
} | ||
options | ||
} | ||
} |
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could you add a comment describing each of those numbers?
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Yes, or at least a doc for the function explaining how it addresses the issue this PR is solving.
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the max open files was added in #367
i'll add info to the options, i may also solve #231 while i'm at it if it doesnt take me too long