From 941fa38123a6fd6a3a7cb0d4accc096f20015bea Mon Sep 17 00:00:00 2001
From: Martin Holst Swende <martin@swende.se>
Date: Fri, 27 Sep 2019 14:12:40 +0200
Subject: [PATCH] ristretto: adjust NumCounters

---
 trie/ristretto.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/trie/ristretto.go b/trie/ristretto.go
index 8d24d01df8..a17fb0fb1d 100644
--- a/trie/ristretto.go
+++ b/trie/ristretto.go
@@ -32,9 +32,12 @@ type RistrettoCache struct {
 // NewRistrettoCache create a new ristretto cache with the given
 // capacity in MB
 func NewRistrettoCache(capacity int) (*RistrettoCache, error) {
+	maxBytes := int64(1000 * 1000 * capacity)
+	// Let's assume an item is around 500 bytes large
+	approxItems := maxBytes / 500
 	cache, err := ristretto.NewCache(&ristretto.Config{
-		NumCounters: int64(capacity * 10),
-		MaxCost:     int64(1000 * 1000 * capacity),
+		NumCounters: int64(approxItems * 10),
+		MaxCost:     maxBytes,
 		BufferItems: 64,
 		Metrics:     false,
 		KeyToHash: func(key interface{}) uint64 {