From 40070c0337fb07af9e2a0ce62adf782067aa8472 Mon Sep 17 00:00:00 2001
From: Kittywhiskers Van Gogh <63189531+kwvg@users.noreply.github.com>
Date: Sun, 8 Dec 2024 10:18:13 +0000
Subject: [PATCH] stats: don't report `network.*hashesPerSecond` if it's zero

It's more likely that the stat is broken than the network running with
such low difficulty, the hash rate is reported as zero.
`*hashesPerSecond` are a gauge and we should let the last known good
value linger instead of potentially overwriting it with an improbable
value.
---
 src/init.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/init.cpp b/src/init.cpp
index 1b599eaefd..092bc971e2 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -866,10 +866,12 @@ static void PeriodicStats(NodeContext& node)
         return workDiff.getdouble() / timeDiff;
     }();
 
-    ::g_stats_client->gaugeDouble("network.hashesPerSecond", nNetworkHashPS);
-    ::g_stats_client->gaugeDouble("network.terahashesPerSecond", nNetworkHashPS / 1e12);
-    ::g_stats_client->gaugeDouble("network.petahashesPerSecond", nNetworkHashPS / 1e15);
-    ::g_stats_client->gaugeDouble("network.exahashesPerSecond", nNetworkHashPS / 1e18);
+    if (nNetworkHashPS > 0.0) {
+        ::g_stats_client->gaugeDouble("network.hashesPerSecond", nNetworkHashPS);
+        ::g_stats_client->gaugeDouble("network.terahashesPerSecond", nNetworkHashPS / 1e12);
+        ::g_stats_client->gaugeDouble("network.petahashesPerSecond", nNetworkHashPS / 1e15);
+        ::g_stats_client->gaugeDouble("network.exahashesPerSecond", nNetworkHashPS / 1e18);
+    }
     // No need for cs_main, we never use null tip here
     ::g_stats_client->gaugeDouble("network.difficulty", (double)GetDifficulty(tip));