[CBRD-25454] performance enhancement at TRACE ON (#5313)

cs/CMakeLists.txt

@@ -478,6 +478,7 @@ target_include_directories(cubridcs PRIVATE ${CMAKE_SOURCE_DIR}/src/heaplayers/u
 if(UNIX)
   target_link_libraries(cubridcs LINK_PRIVATE -Wl,-whole-archive cas ${EP_LIBS} -Wl,-no-whole-archive)
   target_link_libraries(cubridcs LINK_PUBLIC ${CURSES_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${CMAKE_DL_LIBS})
+  target_link_libraries(cubridcs LINK_PUBLIC rt)
 else(UNIX)
   target_link_libraries(cubridcs LINK_PRIVATE cas ${EP_LIBS})
 endif(UNIX)

cubrid/CMakeLists.txt

@@ -497,6 +497,7 @@ target_include_directories(cubrid PRIVATE ${CMAKE_SOURCE_DIR}/src/heaplayers/uti
 if(UNIX)
   target_link_libraries(cubrid LINK_PRIVATE -Wl,-whole-archive ${EP_LIBS} -Wl,-no-whole-archive)
   target_link_libraries(cubrid LINK_PUBLIC ${CURSES_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${CMAKE_DL_LIBS})
+  target_link_libraries(cubrid PUBLIC rt)
 else(UNIX)
   target_link_libraries(cubrid LINK_PRIVATE ${EP_LIBS})
 endif(UNIX)

sa/CMakeLists.txt

@@ -624,6 +624,7 @@ if(UNIX)
   # find out what this means:
   # target_link_libraries(cubridsa LINK_PRIVATE -Wl,-whole-archive cas ${EP_LIBS} -Wl,-no-whole-archive)
   target_link_libraries(cubridsa LINK_PUBLIC ${CURSES_LIBRARIES} ${CMAKE_DL_LIBS})
+  target_link_libraries(cubridsa PUBLIC rt)
 endif(UNIX)
 
 add_dependencies(cubridsa gen_csql_grammar gen_csql_lexer gen_loader_grammar gen_loader_lexer)

src/base/perf_monitor.c

@@ -84,7 +84,7 @@
 
 #if defined (SERVER_MODE)
 #include "connection_error.h"
-#endif /* SERVER_MODE */
+#endif
 
 #if !defined(SERVER_MODE)
 #define pthread_mutex_init(a, b)
@@ -1019,8 +1019,24 @@ UINT64
 perfmon_get_from_statistic (THREAD_ENTRY * thread_p, const int statistic_id)
 {
   UINT64 *stats;
+  int tran_index;
+
+  tran_index = LOG_FIND_THREAD_TRAN_INDEX (thread_p);
+  assert (tran_index >= 0);
+
+  if (tran_index >= pstat_Global.n_trans)
+    {
+      return 0;
+    }
+
+  /* This routine is called from the query execute scan routine in TRACE ON state.
+   * Therefore, there is no need to call perfmon_get_peek_stats,
+   * which retrieves overall statistical information,
+   * because the server's overall statistical information is not needed,
+   * and only I/O fetch and time information are needed.
+   */
+  stats = pstat_Global.tran_stats[tran_index];
 
-  stats = perfmon_server_get_stats (thread_p);
   if (stats != NULL)
     {
       int offset = pstat_Metadata[statistic_id].start_offset;

src/base/tsc_timer.c

@@ -87,7 +87,15 @@ tsc_getticks (TSC_TICKS * tck)
     }
   else
     {
+#if defined (WINDOWS)
       gettimeofday (&(tck->tv), NULL);
+#else
+      struct timespec ts;
+      /* replace gettimeofday with clock_gettime for performance */
+      clock_gettime (CLOCK_REALTIME_COARSE, &ts);
+      tck->tv.tv_sec = ts.tv_sec;
+      tck->tv.tv_usec = ts.tv_nsec / 1000;
+#endif
     }
   return;
 }

src/base/tsc_timer.h

@@ -33,8 +33,11 @@
 do { \
   (total).tv_usec += (diff).tv_usec; \
   (total).tv_sec += (diff).tv_sec; \
-  (total).tv_sec += (total).tv_usec / 1000000; \
-  (total).tv_usec %= 1000000; \
+  if ((total).tv_usec >= 1000000) \
+    { \
+      (total).tv_sec++; \
+      (total).tv_usec -= 1000000; \
+    } \
 } while (0)
 
 typedef UINT64 TSC_UINT64;

util/CMakeLists.txt

@@ -58,6 +58,7 @@ target_compile_definitions(csql PRIVATE ${COMMON_DEFS})
 target_include_directories(csql PRIVATE ${EP_INCLUDES})
 if(UNIX)
   target_link_libraries(csql LINK_PRIVATE ${CMAKE_DL_LIBS})
+  target_link_libraries(csql LINK_PUBLIC rt)
 else(UNIX)
   target_compile_definitions(csql PRIVATE _CONSOLE)
   target_link_libraries(csql LINK_PRIVATE ws2_32)