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Add env variable for rayon thread counts (#12693) (#12698)

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(cherry picked from commit 37222683ee)

Co-authored-by: sakridge <sakridge@gmail.com>
This commit is contained in:
mergify[bot]
2020-10-07 01:26:18 +00:00
committed by GitHub
parent f22a5efde5
commit 2c55319e41
1 changed files with 5 additions and 1 deletions
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6
rayon-threadlimit/src/lib.rs
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@@ -1,12 +1,16 @@
#[macro_use] #[macro_use]
extern crate lazy_static; extern crate lazy_static;
use std::env;
//TODO remove this hack when rayon fixes itself //TODO remove this hack when rayon fixes itself
lazy_static! { lazy_static! {
// reduce the number of threads each pool is allowed to half the cpu core count, to avoid rayon // reduce the number of threads each pool is allowed to half the cpu core count, to avoid rayon
// hogging cpu // hogging cpu
static ref MAX_RAYON_THREADS: usize = num_cpus::get() as usize / 2; static ref MAX_RAYON_THREADS: usize =
env::var("SOLANA_RAYON_THREADS")
.map(|x| x.parse().unwrap_or(num_cpus::get() as usize / 2))
.unwrap_or(num_cpus::get() as usize / 2);
} }
pub fn get_thread_count() -> usize { pub fn get_thread_count() -> usize {