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Add rocskdb high priority threads (#14515) 

Without them, memtable writes can stall on compactions.
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sakridge 2021-01-11 13:32:02 -08:00 committed by GitHub
parent 872a249e97
commit d8105bb7d7
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9
ledger/src/blockstore_db.rs
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@ -1033,6 +1033,15 @@ fn get_db_options(access_type: &AccessType) -> Options {
// A good value for this is the number of cores on the machine // A good value for this is the number of cores on the machine
options.increase_parallelism(num_cpus::get() as i32); options.increase_parallelism(num_cpus::get() as i32);
let mut env = rocksdb::Env::default().unwrap();
// While a compaction is ongoing, all the background threads
// could be used by the compaction. This can stall writes which
// need to flush the memtable. Add some high-priority background threads
// which can service these writes.
env.set_high_priority_background_threads(4);
options.set_env(&env);
// Set max total wal size to 4G. // Set max total wal size to 4G.
options.set_max_total_wal_size(4 * 1024 * 1024 * 1024); options.set_max_total_wal_size(4 * 1024 * 1024 * 1024);
if matches!(access_type, AccessType::PrimaryOnlyForMaintenance) { if matches!(access_type, AccessType::PrimaryOnlyForMaintenance) {