From 17fba8701e3313e552be7a230b55c3c85622d915 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ian@liberator.(none)>
Date: Mon, 26 Apr 2010 10:27:38 +0100
Subject: [PATCH] A comment to explain selection of conns

---
 backends/innduct.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/backends/innduct.c b/backends/innduct.c
index 428d021..c2ca557 100644
--- 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;
-- 
2.30.2