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Use gamma distribution for all load testers

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This commit is contained in:
Joakim Frostegård 2022-10-26 19:49:30 +02:00
parent 2b9db63984
commit db561a1101
12 changed files with 65 additions and 55 deletions
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8
aquatic_http_load_test/src/utils.rs
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@ -2,7 +2,7 @@ use std::sync::Arc;
use rand::distributions::WeightedIndex;
use rand::prelude::*;
use rand_distr::Pareto;
use rand_distr::Gamma;
use crate::common::*;
use crate::config::*;
@ -69,12 +69,12 @@ fn create_scrape_request(config: &Config, state: &LoadTestState, rng: &mut impl
#[inline]
fn select_info_hash_index(config: &Config, state: &LoadTestState, rng: &mut impl Rng) -> usize {
pareto_usize(rng, &state.pareto, config.torrents.number_of_torrents - 1)
gamma_usize(rng, &state.gamma, config.torrents.number_of_torrents - 1)
}
#[inline]
fn pareto_usize(rng: &mut impl Rng, pareto: &Arc<Pareto<f64>>, max: usize) -> usize {
let p: f64 = pareto.sample(rng);
fn gamma_usize(rng: &mut impl Rng, gamma: &Arc<Gamma<f64>>, max: usize) -> usize {
let p: f64 = gamma.sample(rng);
let p = (p.min(101.0f64) - 1.0) / 100.0;
(p * max as f64) as usize