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From: Wander Lairson Costa <wander@redhat.com>
To: williams@redhat.com, jkacur@redhat.com, juri.lelli@redhat.com,
	luffyluo@tencent.com, davidlt@rivosinc.com,
	linux-rt-users@vger.kernel.org
Cc: Wander Lairson Costa <wander@redhat.com>
Subject: [PATCH stalld 14/36] tests/helpers: Fix fractional sleep timeout bugs
Date: Mon, 30 Mar 2026 16:43:37 -0300	[thread overview]
Message-ID: <20260330194410.103953-15-wander@redhat.com> (raw)
In-Reply-To: <20260330194410.103953-1-wander@redhat.com>

The cleanup() process termination loop and start_stalld() pidfile
wait both use fractional sleeps (0.1s and 0.5s) with integer
counters, causing the actual timeouts to be a fraction of the
nominal values. cleanup() with timeout=5 and sleep 0.1 gives only
0.5 seconds, and start_stalld() with timeout=15 and sleep 0.5
gives only 7.5 seconds.

Change both loops to use sleep 1, making the timeout arithmetic
correct. Restructure the cleanup loop to use the same two-phase
SIGTERM/SIGKILL pattern established in stop_stalld().

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
---
 tests/helpers/test_helpers.sh | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/tests/helpers/test_helpers.sh b/tests/helpers/test_helpers.sh
index e4e9b23..06c0471 100755
--- a/tests/helpers/test_helpers.sh
+++ b/tests/helpers/test_helpers.sh
@@ -288,7 +288,7 @@ start_stalld() {
 		local timeout=15
 		local elapsed=0
 		while [ ! -f "$pidfile" ] && [ $elapsed -lt $timeout ]; do
-			sleep 0.5
+			sleep 1
 			elapsed=$((elapsed + 1))
 		done
 
@@ -452,21 +452,23 @@ cleanup() {
 		if [ -n "${pid}" ] && [ "${pid}" -gt 0 ] 2>/dev/null; then
 			# Check if process exists
 			if kill -0 ${pid} 2>/dev/null; then
-				# Try gentle kill first
 				kill ${pid} 2>/dev/null || true
-				# Give it a moment
-				sleep 0.1
-				# Force kill if still running
-				if kill -0 ${pid} 2>/dev/null; then
-					kill -9 ${pid} 2>/dev/null || true
-				fi
-				# Poll for termination (don't use wait - might not be a child)
+
 				local timeout=5
 				local elapsed=0
 				while kill -0 ${pid} 2>/dev/null && [ ${elapsed} -lt ${timeout} ]; do
-					sleep 0.1
+					sleep 1
 					elapsed=$((elapsed + 1))
 				done
+
+				if kill -0 ${pid} 2>/dev/null; then
+					kill -9 ${pid} 2>/dev/null || true
+					elapsed=0
+					while kill -0 ${pid} 2>/dev/null && [ ${elapsed} -lt ${timeout} ]; do
+						sleep 1
+						elapsed=$((elapsed + 1))
+					done
+				fi
 			fi
 		fi
 	done
-- 
2.53.0


  parent reply	other threads:[~2026-03-30 19:45 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-30 19:43 [PATCH stalld 00/36] tests: Replace timing-dependent synchronization with event-driven helpers Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 01/36] tests: Add pre-test and post-test cleanup of stalld processes Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 02/36] tests/helpers: Fix stalld daemon detection in start_stalld() Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 03/36] tests/helpers: Remove duplicate log() function Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 04/36] tests: Add per-test runtime measurement to run_tests.sh Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 05/36] tests/functional: Fix and refactor test_backend_selection.sh Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 06/36] tests/functional: Fix test_logging_destinations.sh path and backend Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 07/36] tests/helpers: Replace sleep with poll in start_stalld_with_log() Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 08/36] tests/helpers: Fix stop_stalld() timeout and shutdown logic Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 09/36] tests/helpers: Fix relative path in backend detection functions Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 10/36] tests/functional: Remove redundant post-stop_stalld sleeps Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 11/36] tests/functional: Fix false positive log matching in test_logging_destinations Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 12/36] tests/helpers: Rewrite wait_for_log_message() with process substitution Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 13/36] tests/helpers: Add wait_for_stalld_ready() and use in start_stalld_with_log() Wander Lairson Costa
2026-03-30 19:43 ` Wander Lairson Costa [this message]
2026-03-30 19:43 ` [PATCH stalld 15/36] tests/helpers: Flush stdout after starvation_gen startup messages Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 16/36] tests/helpers: Add start_starvation_gen() helper function Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 17/36] tests/helpers: Add wait_for_starvation_detected() and wait_for_boost_detected() Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 18/36] tests/functional: Use start_starvation_gen() helper Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 19/36] tests/functional: Replace detection sleeps with event-driven helpers Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 20/36] tests/functional: Remove duplicated -a flag in test_fifo_priority_starvation Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 21/36] tests/functional: Add missing -a flag in test_starvation_detection Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 22/36] tests/functional: Use start_stalld_with_log() in test_log_only Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 23/36] tests/functional: Use start_stalld_with_log() in test_logging_destinations Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 24/36] tests/functional: Use start_stalld_with_log() in test_cpu_selection Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 25/36] tests/functional: Use wait_for_stalld_ready() in test_backend_selection Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 26/36] tests/functional: Use timeout for error path in test_force_fifo Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 27/36] tests/functional: Use timeout for invalid argument tests Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 28/36] tests: Add pass() helper and replace assert_equals hack Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 29/36] tests/functional: Use pass() for all test pass reporting Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 30/36] tests: Add fail() helper and use for all test failures Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 31/36] tests/helpers: Use pass()/fail() in assert functions Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 32/36] tests/functional: Fix multi-CPU detection in test_starvation_detection Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 33/36] tests/functional: Accept FIFO fallback in test_fifo_boosting Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 34/36] tests/functional: Fix readiness detection and FIFO fallback in test_force_fifo Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 35/36] tests/functional: Fix invalid pidfile test in test_pidfile Wander Lairson Costa
2026-03-30 19:43 ` [PATCH stalld 36/36] stalld: die on invalid CPU affinity Wander Lairson Costa

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