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tests: Increase group block rate limiter refill window

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Increase the group block refill time from 100 ms to 1000 ms and
scale the shared bucket sizes to preserve the target rate.

Set the one time burst to 0 to avoid transient overshoot and use
the shared block runtime constant directly in the group path.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-03-30 11:43:58 +02:00
committed by Rob Bradford
parent f116038111
commit 36d6dacee2
1 changed files with 10 additions and 7 deletions
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17
cloud-hypervisor/tests/integration.rs
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@@ -10643,15 +10643,14 @@ mod rate_limiter {
}
fn _test_rate_limiter_group_block(bandwidth: bool, num_queues: u32, num_disks: u32) {
let test_timeout = 10;
let fio_ops = FioOps::RandRW;
let bw_size = if bandwidth {
10485760_u64 // bytes
104857600_u64 // bytes
} else {
100_u64 // I/O
1000_u64 // I/O
};
let bw_refill_time = 100; // ms
let bw_refill_time = 1000; // ms
let limit_rate = (bw_size * 1000) as f64 / bw_refill_time as f64;
let disk_config = UbuntuDiskConfig::new(JAMMY_IMAGE_NAME.to_string());
@@ -10660,9 +10659,13 @@ mod rate_limiter {
let test_img_dir = TempDir::new_with_prefix("/var/tmp/ch").unwrap();
let rate_limit_group_arg = if bandwidth {
format!("id=group0,bw_size={bw_size},bw_refill_time={bw_refill_time}")
format!(
"id=group0,bw_size={bw_size},bw_one_time_burst=0,bw_refill_time={bw_refill_time}"
)
} else {
format!("id=group0,ops_size={bw_size},ops_refill_time={bw_refill_time}")
format!(
"id=group0,ops_size={bw_size},ops_one_time_burst=0,ops_refill_time={bw_refill_time}"
)
};
let mut disk_args = vec![
@@ -10718,7 +10721,7 @@ mod rate_limiter {
let mut fio_command = format!(
"sudo fio --name=global --output-format=json \
--direct=1 --bs=4k --ioengine=io_uring --iodepth=64 \
--rw={fio_ops} --runtime={test_timeout} --numjobs={num_queues}"
--rw={fio_ops} --runtime={BLOCK_RATE_LIMITER_RUNTIME} --numjobs={num_queues}"
);
// Generate additional argument for each disk: