diff --git a/cmd/aggregator/backfill.go b/cmd/aggregator/backfill.go
index 4955b7a..c27f1db 100644
--- a/cmd/aggregator/backfill.go
+++ b/cmd/aggregator/backfill.go
@@ -62,8 +62,10 @@ func Backfill(ctx context.Context, collectorAddrs []string, cache *Cache) {
 		mergeDump(r.coarse, coarseByTS)
 	}
 
+	mergeStart := time.Now()
 	fine := buildSnapshots(fineByTS, st.FineTopK, st.FineRingSize)
 	coarse := buildSnapshots(coarseByTS, st.CoarseTopK, st.CoarseRingSize)
+	log.Printf("backfill: merge+topk took %s", time.Since(mergeStart).Round(time.Microsecond))
 
 	if len(fine)+len(coarse) == 0 {
 		log.Printf("backfill: no data received from any collector")
@@ -71,7 +73,7 @@ func Backfill(ctx context.Context, collectorAddrs []string, cache *Cache) {
 	}
 	loadStart := time.Now()
 	cache.LoadHistorical(fine, coarse)
-	log.Printf("backfill: loaded %d fine + %d coarse buckets in %s total",
+	log.Printf("backfill: loaded %d fine + %d coarse buckets in %s",
 		len(fine), len(coarse), time.Since(loadStart).Round(time.Microsecond))
 }
 
diff --git a/cmd/frontend/templates/index.html b/cmd/frontend/templates/index.html
index 404a13c..853f547 100644
--- a/cmd/frontend/templates/index.html
+++ b/cmd/frontend/templates/index.html
@@ -32,7 +32,7 @@
   <input type="hidden" name="w" value="{{.Params.WindowS}}">
   <input type="hidden" name="by" value="{{.Params.GroupByS}}">
   <input type="hidden" name="n" value="{{.Params.N}}">
-  <input class="filter-input" type="text" name="q" value="{{.FilterExpr}}" placeholder="status>=400 AND website~=gouda.* AND uri~=^/ct/v1/ AND is_tor=0 AND asn=8298">
+  <input class="filter-input" type="text" name="q" value="{{.FilterExpr}}" placeholder="status>=400 AND website!~=^gouda.* AND uri~=^/ct/v1/ AND is_tor=0 AND asn=8298">
   <button type="submit">filter</button>
   {{- if .FilterExpr}} <a class="clear" href="{{.ClearFilterURL}}">× clear</a>{{end}}
 </form>