Squid-2.2.STABLE3: async-io is a bit keen on warn on thread usage
    Async-IO is a bit keen on give a warning about thread usage. This
    patch increases the burst filter threashold a little bit. Hopefylly I will
    find time to address this at the real root of the problem (bursty store
    recycling) in the near future.

Index: squid/src/aiops.c
diff -u squid/src/aiops.c:1.1.1.14.14.1 squid/src/aiops.c:1.1.1.14.14.2
--- squid/src/aiops.c:1.1.1.14.14.1	Thu May 20 00:33:40 1999
+++ squid/src/aiops.c	Sun Jun 13 09:46:05 1999
@@ -345,7 +345,7 @@
 	if (request_queue_len < queue_low)
 	    queue_low = request_queue_len;
 	if (squid_curtime >= (last_warn + 15) &&
-	    squid_curtime >= (high_start + 1)) {
+	    squid_curtime >= (high_start + 2)) {
 	    debug(43, 1) ("aio_queue_request: WARNING - Running out of I/O theads\n");
 	    debug(43, 2) ("aio_queue_request: Queue Length: current=%d, high=%d, low=%d, duration=%d\n",
 		request_queue_len, queue_high, queue_low, squid_curtime - high_start);