plan and comments.

git-svn-id: file:///svn/unbound/trunk@621 be551aaa-1e26-0410-a405-d3ace91eadb9

daemon/worker.c

@@ -748,7 +748,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 			lock_rw_unlock(&e->lock);
 			return 1;
 		}
-		verbose(VERB_DETAIL, "answer from the cache -- data has timed out");
+		verbose(VERB_ALGO, "answer from the cache failed");
 		lock_rw_unlock(&e->lock);
 	}
 	if(!LDNS_RD_WIRE(ldns_buffer_begin(c->buffer))) {
@@ -758,7 +758,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 			&edns)) {
 			return 1;
 		}
-		verbose(VERB_DETAIL, "answer norec from cache -- "
+		verbose(VERB_ALGO, "answer norec from cache -- "
 			"need to validate or not primed");
 	}
 	ldns_buffer_rewind(c->buffer);

doc/Changelog

@@ -1,3 +1,7 @@
+19 September 2007: Wouter
+	- comments about non-packed usage.
+	- plan for overload support in 0.6.
+
 18 September 2007: Wouter
 	- wildcard nsec3 testcases, and fixup to get correct wildcard name.
 	- validator prints subtype classification for debug.

doc/plan

@@ -169,6 +169,16 @@ Styleguide:
   logfileparsing tool that makes these excerpts and emails them.
 * ANS failure workaround (nxdomain for ENT; check if nxdomain is ENTnodata).
 * clear cache as a callback from the new-rrset-id routine.
+* make overload mode work; phase 0 all ok, phase 1 some threads close ports,
+  to let other threads pick up work. phase 2, all threads closed, so all open
+  the ports again and drop all non-cache-reply queries.
+  Keep mutexed num-overloaded-threads counter. thread incs it when it hits
+  max number of user queries serviced in mesh. threads decs it when it
+  falls below 90% of the max. if incs, and not all threads closed, phase 1,
+  else, phase 2 start is broadcast over command pipes. if decs, open ports
+  if phase 1, start servicing, phase is 0 again. Make robust against delays.
+  readme: max about 1 second worth of incoming queries, 10k perhaps,
+	or 1/number of seconds it takes start up of 10k.
 
 *** Local zones feature.
 * Build in local zone features. First the total stop for1912.

util/data/msgreply.h

@@ -89,6 +89,10 @@ struct rrset_ref {
  *	o struct
  *	o rrset_ref array
  *	o packed_rrset_key* array.
+ *
+ * Memory layout is sometimes not packed, when the message is synthesized,
+ * for easy of the generation. It is allocated packed when it is copied
+ * from the region allocation to the malloc allocation.
  */
 struct reply_info {
 	/** the flags for the answer, host byte order. */