From 4df94ffe4080009d0219865555f81371ab19e008 Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonygarnockjones@gmail.com>
Date: Mon, 10 Jan 2011 14:48:39 -0500
Subject: [PATCH] Note re memory pressure and the queue shoveller

---
 server/queue.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/server/queue.c b/server/queue.c
index 3035ebe..721ad77 100644
--- a/server/queue.c
+++ b/server/queue.c
@@ -144,6 +144,9 @@ static void shoveller(void *qv) {
   end_burst(q, &burst_count, total_count);
   //info("Waiting for throck\n");
   q->shovel_awake = 0;
+  /* TODO: if the number of active processes is large, assume we have
+     memory pressure, and quit the shovel early rather than waiting
+     for a few milliseconds to see if we're idle. */
   if (nap(100)) {
     cmsg_bytes_t n = sexp_data(q->name);
     info("Queue <<%.*s>> idle. Shoveller exiting\n", n.len, n.bytes);