From 292f6568fa377420c81e0317a26b804057ce208c Mon Sep 17 00:00:00 2001 From: Michael Widenius Date: Tue, 9 Mar 2010 21:22:24 +0200 Subject: Added count of my_sync calls (to SHOW STATUS) tmp_table_size can now be set to 0 (to disable in memory internal temp tables) Improved speed for internal Maria temp tables: - Don't use packed keys, except with long text fields. - Don't copy key all accessed pages during key search. Some new benchmark tests to sql-bench (for group by) BUILD/compile-pentium64-gcov: Update script to use same pentium_config flags as other tests BUILD/compile-pentium64-gprof: Update script to use same pentium_config flags as other tests include/my_sys.h: Added count of my_sync calls mysql-test/r/variables.result: tmp_table_size can now be set to 0 sql-bench/test-select.sh: Added some new test for GROUP BY on a not key field and group by with different order by sql/mysqld.cc: Added count of my_sync calls tmp_table_size can now be set to 0 (to disable in memory internal temp tables) sql/sql_select.cc: If tmp_table_size is 0, don't use in memory temp tables (good for benchmarking MyISAM/Maria temp tables) Don't pack keys for Maria tables; The 8K page size makes packed keys too slow for temp tables. storage/maria/ma_key_recover.h: Moved definition to maria_def.h storage/maria/ma_page.c: Moved code used to simplify comparing of identical Maria tables to own function (page_cleanup()) Fixed that one can read a page with a read lock. storage/maria/ma_rkey.c: For not exact key reads, cache the page where we found key (to speed up future read-next/read-prev calls) storage/maria/ma_search.c: Moved code to cache last key page to separate function. Instead of copying pages, only get a link to the page. This notable speeds up key searches on bigger tables. storage/maria/ma_write.c: Added comment storage/maria/maria_def.h: Moved page_cleanup() to separate function. --- mysys/my_sync.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'mysys/my_sync.c') diff --git a/mysys/my_sync.c b/mysys/my_sync.c index f8961202fa3..967a6ae6c78 100644 --- a/mysys/my_sync.c +++ b/mysys/my_sync.c @@ -17,6 +17,8 @@ #include "mysys_err.h" #include +ulong my_sync_count; /* Count number of sync calls */ + /* Sync data in file to disk @@ -46,6 +48,7 @@ int my_sync(File fd, myf my_flags) DBUG_ENTER("my_sync"); DBUG_PRINT("my",("fd: %d my_flags: %d", fd, my_flags)); + statistic_increment(my_sync_count,&THR_LOCK_open); do { #if defined(F_FULLFSYNC) -- cgit v1.2.1