From 97b313c7d480bc087b0c805b4bb42b71dd9c9e93 Mon Sep 17 00:00:00 2001
From: Qi Wang <interwq@gwu.edu>
Date: Thu, 15 Dec 2022 14:36:04 -0800
Subject: [PATCH] More conservative setting for
 /test/unit/background_thread_enable.

Lower the thread and arena count to avoid resource exhaustion on 32-bit.
---
 test/unit/background_thread_enable.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/test/unit/background_thread_enable.c b/test/unit/background_thread_enable.c
index 44034ac6..5f42feff 100644
--- a/test/unit/background_thread_enable.c
+++ b/test/unit/background_thread_enable.c
@@ -1,6 +1,6 @@
 #include "test/jemalloc_test.h"
 
-const char *malloc_conf = "background_thread:false,narenas:1,max_background_threads:20";
+const char *malloc_conf = "background_thread:false,narenas:1,max_background_threads:8";
 
 static unsigned
 max_test_narenas(void) {
@@ -12,12 +12,9 @@ max_test_narenas(void) {
 	 * approximation.
 	 */
 	unsigned ret = 10 * ncpus;
-	/* Limit the max to avoid VM exhaustion on 32-bit . */
-	if (ret > 512) {
-		ret = 512;
-	}
 
-	return ret;
+	/* Limit the max to avoid VM exhaustion on 32-bit . */
+	return ret > 256 ? 256 : ret;
 }
 
 TEST_BEGIN(test_deferred) {