diff --git a/collections/perf.sh b/collections/perf.sh
index 7f9408f3..df900ce4 100644
--- a/collections/perf.sh
+++ b/collections/perf.sh
@@ -60,9 +60,9 @@ function perf(wasm, title, init, batch) {
   uninstall(cid);
 };
 
-let init_size = 500_000;
+let init_size = 1_000_000;
 let batch_size = 50;
-output(file, "\n## Map\n\n| |binary_size|generate 500k|max mem|batch_get 50|batch_put 50|batch_remove 50|upgrade|\n|--:|--:|--:|--:|--:|--:|--:|--:|\n");
+output(file, "\n## Map\n\n| |binary_size|generate 1m|max mem|batch_get 50|batch_put 50|batch_remove 50|upgrade|\n|--:|--:|--:|--:|--:|--:|--:|--:|\n");
 perf(hashmap, "hashmap", init_size, batch_size);
 perf(triemap, "triemap", init_size, batch_size);
 perf(rbtree, "rbtree", init_size, batch_size);
@@ -73,7 +73,7 @@ perf(btreemap_rs, "btreemap_rs", init_size, batch_size);
 perf(imrc_hashmap_rs, "imrc_hashmap_rs", init_size, batch_size);
 perf(hashmap_rs, "hashmap_rs", init_size, batch_size);
 
-output(file, "\n## Priority queue\n\n| |binary_size|heapify 500k|max mem|pop_min 50|put 50|pop_min 50|upgrade|\n|--:|--:|--:|--:|--:|--:|--:|--:|\n");
+output(file, "\n## Priority queue\n\n| |binary_size|heapify 1m|max mem|pop_min 50|put 50|pop_min 50|upgrade|\n|--:|--:|--:|--:|--:|--:|--:|--:|\n");
 perf(heap, "heap", init_size, batch_size);
 perf(heap_rs, "heap_rs", init_size, batch_size);
 
diff --git a/utils.mk b/utils.mk
index b7bf74cc..2f55440c 100644
--- a/utils.mk
+++ b/utils.mk
@@ -36,8 +36,7 @@ define perf
 	set -e; \
 	$(call prepare_perf,$(1)); \
 	ic-repl ../../$(1)/$(2); \
-	du -h ../../_out; \
-	df -h
+	du -h ../../_out
 endef
 
 define perf_two
@@ -45,6 +44,5 @@ define perf_two
 	$(call prepare_perf,$(1)); \
 	ic-repl ../../$(1)/$(2); \
 	ic-repl ../../$(1)/$(3); \
-	du -h ../../_out; \
-	df -h
+	du -h ../../_out
 endef