Skip the analysis of too old queries in the logs altogether. By this,…

… we can skip the initial GC run, since there will be nothing to be collected

main.c

@@ -79,16 +79,6 @@ int main (int argc, char* argv[]) {
 		killed = 1;
 	}
 
-	if(config.rolling_24h)
-	{
-		pthread_t GCthread;
-		if(pthread_create( &GCthread, &attr, GC_thread, NULL ) != 0)
-		{
-			logg("Unable to start initial GC thread. Exiting...");
-			killed = 1;
-		}
-	}
-
 	while(!killed)
 	{
 		sleepms(100);

parser.c

@@ -191,6 +191,12 @@ void process_pihole_log(int file)
 			int querytimestamp, overTimetimestamp;
 			extracttimestamp(readbuffer, &querytimestamp, &overTimetimestamp);
 
+			// Get minimum time stamp to analyze
+			int differencetofullhour = time(NULL) % GCinterval;
+			int mintime = (time(NULL) - GCdelay - differencetofullhour) - MAXLOGAGE;
+			// Skip parsing of log entries that are too old altogether if 24h window is requested
+			if(config.rolling_24h && querytimestamp < mintime) continue;
+
 			// Ensure we have enough space in the queries struct
 			memory_check(QUERIES);
 			int queryID = counters.queries;