A comment to explain selection of conns

diff --git a/backends/innduct.c b/backends/innduct.c
index 428d021d76b00aa870765bf0ff2b7ea31f62f87b..c2ca557455c4f5927f54f027a98b6b7155f2b5a1 100644 (file)
--- a/backends/innduct.c
+++ b/backends/innduct.c
@@ -837,6 +837,13 @@ static void check_master_queue(void) {
     
     Conn *walk, *use=0;
     int spare;
+
+    /* Find a connection to offer this article.  We prefer a busy
+     * connection to an idle one, provided it's not full.  We take the
+     * first (oldest) and since that's stable, it will mean we fill up
+     * connections in order.  That way if we have too many
+     * connections, the spare ones will go away eventually.
+     */
     for (walk=LIST_HEAD(conns); walk; walk=LIST_NEXT(walk)) {
       int inqueue= walk->sent.count + walk->queue.count;
       spare= walk->max_queue - inqueue;