diff --git a/main/poll/poll_backend_epoll.c b/main/poll/poll_backend_epoll.c
index 394b0dc52446..0dca54a96eec 100644
--- a/main/poll/poll_backend_epoll.c
+++ b/main/poll/poll_backend_epoll.c
@@ -18,6 +18,11 @@
 
 #include <sys/epoll.h>
 
+#ifdef HAVE_EPOLL_PWAIT2
+/* Cleared when the running kernel returns ENOSYS */
+static zend_atomic_bool epoll_pwait2_available = ZEND_ATOMIC_BOOL_INITIALIZER(true);
+#endif
+
 typedef struct epoll_backend_data {
 	int epoll_fd;
 	struct epoll_event *events;
@@ -180,13 +185,21 @@ static int epoll_backend_wait(
 		backend_data->events_capacity = max_events;
 	}
 
-	int nfds;
+	int nfds = 0;
 #ifdef HAVE_EPOLL_PWAIT2
-	nfds = epoll_pwait2(backend_data->epoll_fd, backend_data->events, max_events, timeout, NULL);
-#else
-	int timeout_ms = php_poll_timespec_to_ms(timeout);
-	nfds = epoll_wait(backend_data->epoll_fd, backend_data->events, max_events, timeout_ms);
+	if (EXPECTED(zend_atomic_bool_load_ex(&epoll_pwait2_available))) {
+		nfds = epoll_pwait2(
+				backend_data->epoll_fd, backend_data->events, max_events, timeout, NULL);
+		if (UNEXPECTED(nfds < 0 && (errno == ENOSYS || errno == ENOTSUP))) {
+			zend_atomic_bool_store_ex(&epoll_pwait2_available, false);
+		}
+	}
+	if (UNEXPECTED(!zend_atomic_bool_load_ex(&epoll_pwait2_available)))
 #endif
+	{
+		int timeout_ms = php_poll_timespec_to_ms(timeout);
+		nfds = epoll_wait(backend_data->epoll_fd, backend_data->events, max_events, timeout_ms);
+	}
 
 	if (nfds > 0) {
 		for (int i = 0; i < nfds; i++) {