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tests: Stabilize block rate limiter workloads

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Add a ramp time before measuring the block rate limiter tests so
both the single device and group workloads are measured after
warm up to make the measurements less sensitive to startup
transients.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-03-30 11:46:49 +02:00
committed by Rob Bradford
parent 36d6dacee2
commit 9db5f0439e
1 changed files with 5 additions and 2 deletions
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cloud-hypervisor/tests/integration.rs
+5 -2
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@@ -10477,6 +10477,7 @@ mod rate_limiter {
const NET_RATE_LIMITER_RUNTIME: u32 = 20; const NET_RATE_LIMITER_RUNTIME: u32 = 20;
const BLOCK_RATE_LIMITER_RUNTIME: u32 = 20; const BLOCK_RATE_LIMITER_RUNTIME: u32 = 20;
const BLOCK_RATE_LIMITER_RAMP_TIME: u32 = 5;
// Check if the 'measured' rate is within the expected 'difference' (in percentage) // Check if the 'measured' rate is within the expected 'difference' (in percentage)
// compared to given 'limit' rate. // compared to given 'limit' rate.
@@ -10624,7 +10625,8 @@ mod rate_limiter {
let fio_command = format!( let fio_command = format!(
"sudo fio --filename=/dev/vdc --name=test --output-format=json \ "sudo fio --filename=/dev/vdc --name=test --output-format=json \
--direct=1 --bs=4k --ioengine=io_uring --iodepth=64 \ --direct=1 --bs=4k --ioengine=io_uring --iodepth=64 \
--rw={fio_ops} --runtime={BLOCK_RATE_LIMITER_RUNTIME} --numjobs={num_queues}" --rw={fio_ops} --runtime={BLOCK_RATE_LIMITER_RUNTIME} \
--ramp_time={BLOCK_RATE_LIMITER_RAMP_TIME} --numjobs={num_queues}",
); );
let output = guest.ssh_command(&fio_command).unwrap(); let output = guest.ssh_command(&fio_command).unwrap();
@@ -10721,7 +10723,8 @@ mod rate_limiter {
let mut fio_command = format!( let mut fio_command = format!(
"sudo fio --name=global --output-format=json \ "sudo fio --name=global --output-format=json \
--direct=1 --bs=4k --ioengine=io_uring --iodepth=64 \ --direct=1 --bs=4k --ioengine=io_uring --iodepth=64 \
--rw={fio_ops} --runtime={BLOCK_RATE_LIMITER_RUNTIME} --numjobs={num_queues}" --rw={fio_ops} --runtime={BLOCK_RATE_LIMITER_RUNTIME} \
--ramp_time={BLOCK_RATE_LIMITER_RAMP_TIME} --numjobs={num_queues}",
); );
// Generate additional argument for each disk: // Generate additional argument for each disk: