diff --git a/tools/test/avx_sig/avx_sig.c b/tools/test/avx_sig/avx_sig.c
--- a/tools/test/avx_sig/avx_sig.c
+++ b/tools/test/avx_sig/avx_sig.c
@@ -43,6 +43,11 @@
 #define	nitems(x)	(sizeof((x)) / sizeof((x)[0]))
 #endif
 
+/* SIGALRM interval in seconds. */
+#ifndef TIMO
+#define	TIMO	5
+#endif
+
 #if defined(__amd64__)
 #define	NREGS	16
 #elif defined(__aarch64__)
@@ -91,7 +96,6 @@
 	atomic_fetch_add_explicit(&sigs, 1, memory_order_relaxed);
 }
 
-#ifdef SIGINFO
 static void
 siginfo_handler(int sig __unused)
 {
@@ -102,8 +106,10 @@
 		    r.ru_nvcsw, r.ru_nivcsw, r.ru_nsignals);
 	}
 	printf("%u SIGUSR1\n", sigs);
-}
+#ifndef SIGINFO
+	alarm(TIMO);
 #endif
+}
 
 static struct xmm zero_xmm = {};
 
@@ -195,13 +201,20 @@
 	struct sigaction sa;
 	int error, i, ncpu;
 
-#ifdef SIGINFO
 	bzero(&sa, sizeof(sa));
+#ifdef SIGINFO
 	sa.sa_handler = siginfo_handler;
 	if (sigaction(SIGINFO, &sa, NULL) == -1) {
 		fprintf(stderr, "sigaction SIGINFO %s\n", strerror(errno));
 		exit(1);
 	}
+#else
+	sa.sa_handler = siginfo_handler;
+	if (sigaction(SIGALRM, &sa, NULL) == -1) {
+		fprintf(stderr, "sigaction SIGALRM %s\n", strerror(errno));
+		exit(1);
+	}
+	alarm(TIMO);
 #endif
 
 	bzero(&sa, sizeof(sa));