Most open trackers do not have the problem of not being called often enough.. so do not introduce an extra timeout when waiting for activity. That also removes one of the last extraneous gettimeofday calls

opentracker.c

@@ -728,11 +728,9 @@ static void server_mainloop( ) {
   time_t next_timeout_check = g_now + OT_CLIENT_TIMEOUT_CHECKINTERVAL;
 
   for( ; ; ) {
-    tai6464 t;
     int64 i;
 
-    taia_uint( &t, (unsigned int)(g_now + OT_CLIENT_TIMEOUT_CHECKINTERVAL) );
-    io_waituntil( t );
+    io_wait();
 
     while( ( i = io_canread( ) ) != -1 ) {
       const void *cookie = io_getcookie( i );