buf0buf.c, srv0srv.h, buf0buf.h, srv0srv.c:

  Clean up the working of the main thread; add a tunable parameter srv_max_buf_pool_modified_pct which can be used to make the flush phase in shutdown quicker

2 files changed, 10 insertions, 0 deletions

diff --git a/innobase/include/buf0buf.h b/innobase/include/buf0buf.h
index 395f88a2c7c..e4d3671586d 100644
--- a/innobase/include/buf0buf.h
+++ b/innobase/include/buf0buf.h
@@ -472,6 +472,13 @@ buf_print_io(
 /*=========*/
 	char*	buf,	/* in/out: buffer where to print */
 	char*	buf_end);/* in: buffer end */
+/*************************************************************************
+Returns the ratio in percents of modified pages in the buffer pool /
+database pages in the buffer pool. */
+
+ulint
+buf_get_modified_ratio_pct(void);
+/*============================*/
 /**************************************************************************
 Refreshes the statistics used to print per-second averages. */
 
diff --git a/innobase/include/srv0srv.h b/innobase/include/srv0srv.h
index ad6f71f7a3a..8355496762c 100644
--- a/innobase/include/srv0srv.h
+++ b/innobase/include/srv0srv.h
@@ -74,6 +74,9 @@ extern ulint	srv_lock_wait_timeout;
 extern char*    srv_file_flush_method_str;
 extern ulint    srv_unix_file_flush_method;
 extern ulint   	srv_win_file_flush_method;
+
+extern ulint	srv_max_dirty_pages_pct;
+
 extern ulint	srv_force_recovery;
 extern ulint	srv_thread_concurrency;