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Split the max-memory by the number of jobs

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Kerollmops 2020-10-07 14:08:00 +02:00
parent 38820bc75c
commit fb2c402ae1
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1 changed files with 9 additions and 5 deletions
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14
src/bin/indexer.rs
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@ -86,13 +86,17 @@ struct IndexerOpt {
#[structopt(long)]
max_nb_chunks: Option<usize>,
/// MTBL max memory in bytes.
#[structopt(long, default_value = "440401920")] // 420 MB
/// The maximum amount of memory to use for the MTBL buffer. It is recommended
/// to use something like 80%-90% of the available memory.
///
/// It is automatically split by the number of jobs e.g. if you use 7 jobs
/// and 7 GB of max memory, each thread will use a maximum of 1 GB.
#[structopt(long, default_value = "7516192768")] // 7 GB
max_memory: usize,
/// Size of the linked hash map cache when indexing.
/// The bigger it is, the faster the indexing is but the more memory it takes.
#[structopt(long, default_value = "524288")]
#[structopt(long, default_value = "500")]
linked_hash_map_size: usize,
/// The name of the compression algorithm to use when compressing intermediate
@ -735,7 +739,7 @@ fn main() -> anyhow::Result<()> {
let num_threads = rayon::current_num_threads();
let linked_hash_map_size = opt.indexer.linked_hash_map_size;
let max_nb_chunks = opt.indexer.max_nb_chunks;
let max_memory = opt.indexer.max_memory;
let max_memory_by_job = opt.indexer.max_memory / num_threads;
let chunk_compression_type = opt.indexer.chunk_compression_type;
let chunk_compression_level = opt.indexer.chunk_compression_level;
let log_every_n = opt.indexer.log_every_n;
@ -747,7 +751,7 @@ fn main() -> anyhow::Result<()> {
let store = Store::new(
linked_hash_map_size,
max_nb_chunks,
Some(max_memory),
Some(max_memory_by_job),
chunk_compression_type,
chunk_compression_level,
)?;