larger default infra cache.

git-svn-id: file:///svn/unbound/trunk@547 be551aaa-1e26-0410-a405-d3ace91eadb9

doc/Changelog

@@ -9,6 +9,9 @@
 	  the rrset is from the additional section. Signatures may have
 	  fallen off the packet, and cause validation failure.
 	- more verbose signature date errors (with the date attached).
+	- increased default infrastructure cache size. It is important for
+	  performance, and 1000 entries are only 212k (or a 400 k total cache
+	  size). To 10000 entries (for 2M entries, 4M cache size).
 
 23 August 2007: Wouter
 	- CNAME handling - move needs_validation to before val_new().

doc/example.conf

@@ -76,7 +76,7 @@ server:
 	# infra-cache-slabs: 4
 
 	# the maximum number of hosts that are cached (roundtrip times, EDNS).
-	# infra-cache-numhosts: 1000
+	# infra-cache-numhosts: 10000
 
 	# the maximum number of lame zones per host that are cached.
 	# infra-cache-numlame: 1000

doc/unbound.conf.5

@@ -113,7 +113,7 @@ The time to live when a delegation is discovered to be lame. Default is 900.
 Number of slabs in the infrastructure cache. Slabs reduce lock contention 
 by threads. Must be set to a power of 2. 
 .It \fBinfra-cache-numhosts:\fR <number>
-Number of hosts for which information is cached. Default is 1000.
+Number of hosts for which information is cached. Default is 10000.
 .It \fBinfra-cache-numlame:\fR <number>
 Number of zones per host for which lameness is cached. Default is 1000.
 .It \fBdo-ip4:\fR <yes or no>

util/config_file.c

@@ -87,7 +87,7 @@ config_create()
 	cfg->lame_ttl = 900;
 	cfg->bogus_ttl = 900;
 	cfg->infra_cache_slabs = 4;
-	cfg->infra_cache_numhosts = 1000;
+	cfg->infra_cache_numhosts = 10000;
 	cfg->infra_cache_numlame = 1000;
 	cfg->val_clean_additional = 1;
 	if(!(cfg->username = strdup(""))) goto error_exit;