Merge cca9ece into 97a455c

Author: Sazonov99

ydb/core/util/cpuinfo.cpp

@@ -105,10 +105,21 @@ std::vector<NKikimr::TSystemThreadsMonitor::TSystemThreadPoolInfo> NKikimr::TSys
                 info.States.emplace_back(c, states[c]);
             }
         }
-        info.MajorPageFaults = double(majorPageFaults) / passedSeconds;
-        info.MinorPageFaults = double(minorPageFaults) / passedSeconds;
-        info.SystemUsage = double(systemTime) / ticks / info.Threads;
-        info.UserUsage = double(userTime) / ticks / info.Threads;
+        if (passedSeconds > 0.0) {
+    	    info.MajorPageFaults = double(majorPageFaults) / passedSeconds;
+    	    info.MinorPageFaults = double(minorPageFaults) / passedSeconds;
+        } else {
+            info.MajorPageFaults = 0.0;
+            info.MinorPageFaults = 0.0;
+        }
+
+        if (ticks > 0.0 && info.Threads > 0) {
+            info.SystemUsage = double(systemTime) / ticks / info.Threads;
+            info.UserUsage = double(userTime) / ticks / info.Threads;
+        } else {
+            info.SystemUsage = 0.0;
+            info.UserUsage = 0.0;
+        }
     }
     UpdateTime = now;
     return result;