diff --git a/include/proto/server.h b/include/proto/server.h
index 77a5312..d0b925c 100644
--- a/include/proto/server.h
+++ b/include/proto/server.h
@@ -251,7 +251,8 @@
 	    (srv->max_idle_conns == -1 || srv->max_idle_conns > srv->curr_idle_conns) &&
 	    !(conn->flags & CO_FL_PRIVATE) &&
 	    ((srv->proxy->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR) &&
-	    !conn->mux->used_streams(conn) && conn->mux->avail_streams(conn)) {
+	    !conn->mux->used_streams(conn) && conn->mux->avail_streams(conn) &&
+	    ha_used_fds < global.tune.pool_low_count) {
 		int retadd;
 
 		retadd = _HA_ATOMIC_ADD(&srv->curr_idle_conns, 1);
diff --git a/include/types/global.h b/include/types/global.h
index f1db95e..ba3738b 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -161,6 +161,10 @@
 		int pattern_cache; /* max number of entries in the pattern cache. */
 		int sslcachesize;  /* SSL cache size in session, defaults to 20000 */
 		int comp_maxlevel;    /* max HTTP compression level */
+		int pool_low_ratio;   /* max ratio of FDs used before we stop using new idle connections */
+		int pool_high_ratio;  /* max ratio of FDs used before we start killing idle connections when creating new connections */
+		int pool_low_count;   /* max number of opened fd before we stop using new idle connections */
+		int pool_high_count;  /* max number of opened fd before we start killing idle connections when creating new connections */
 		unsigned short idle_timer; /* how long before an empty buffer is considered idle (ms) */
 	} tune;
 	struct {