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tests: fix CI flakiness

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This test has failed at least once in upstream CI. With the applied
stress workload, reducing the downtime to 1 ms makes it virtually
impossible for CI runners with various speeds to complete VM migration.

In other words: we will always be able to cancel.

On-behalf-of: SAP philipp.schuster@sap.com
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
This commit is contained in:
Philipp Schuster
2026-03-27 15:47:26 +01:00
committed by Bo Chen
parent 0bc3ca1103
commit c06f6c3293
1 changed files with 4 additions and 4 deletions
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8
cloud-hypervisor/tests/integration.rs
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@@ -9949,7 +9949,7 @@ mod live_migration {
// Start a memory stressor in the background to keep pages dirty,
// ensuring the precopy loop cannot converge within the 1s timeout.
guest
.ssh_command("nohup stress --vm 2 --vm-bytes 200M --vm-keep &>/dev/null &")
.ssh_command("nohup stress --vm 2 --vm-bytes 220M --vm-keep &>/dev/null &")
.unwrap();
// Give stress a moment to actually start dirtying memory
thread::sleep(Duration::from_secs(3));
@@ -9971,14 +9971,14 @@ mod live_migration {
thread::sleep(Duration::from_secs(1));
// Use a tight downtime budget (50ms) combined with a 1s timeout so the
// migration cannot converge regardless of strategy.
// Use a tight downtime budget (1ms) combined with a 1s timeout so the
// migration practically cannot converge regardless of strategy.
let mut send_migration = Command::new(clh_command("ch-remote"))
.args([
&format!("--api-socket={src_api_socket}"),
"send-migration",
&format!(
"destination_url=tcp:{host_ip}:{migration_port},downtime_ms=50,timeout_s=1,timeout_strategy={timeout_strategy:?}"
"destination_url=tcp:{host_ip}:{migration_port},downtime_ms=1,timeout_s=1,timeout_strategy={timeout_strategy:?}"
),
])
.stdin(Stdio::null())