martinzink commented on a change in pull request #1032:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1032#discussion_r596771906
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File path: libminifi/include/core/state/nodes/DeviceInformation.h
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@@ -490,6 +477,8 @@ class DeviceInfoNode : public DeviceInformation {
std::string hostname_;
std::string ip_;
std::string device_id_;
+ static utils::SystemCPUUsageTracker cpu_load_tracker_;
+ static std::mutex cpu_load_tracker_mutex_;
Review comment:
this is static because CPU Usage tracking needs some persistent data,
because it compares CPU ticks between heartbeats, but the response nodes are
instantiated and destroyed with each heartbeat.
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