- Bug #15815: Very poor performance with multiple queries running concurrently
- Bug #22868: 'Thread thrashing' with > 50 concurrent conns under an upd-intensive workloadw

This is a patch from an e-mail; it is not included (yet) in an InnoDB snapshot.


innobase/buf/buf0buf.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/buf/buf0flu.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/buf/buf0lru.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/buf0buf.h:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/buf0buf.ic:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/sync0arr.h:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/sync0rw.h:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/sync0rw.ic:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/include/sync0sync.h:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/os/os0sync.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/sync/sync0arr.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/sync/sync0rw.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.
innobase/sync/sync0sync.c:
  branches/5.0: Merge r999 from trunk:
  
  Reduce buffer pool mutex contention under >= 4 big concurrent
  CPU-bound SELECT queries.  (Bug #22868)
  
  Fix: replace the mutex by one mutex protecting the 'flush list'
  (and the free list) and several mutexes protecting portions of the
  buffer pool, where we keep several indivudual LRU lists of pages.
  
  This patch is from Sunny Bains and Heikki Tuuri.

into  siva.hindu.god:/usr/home/tim/m/bk/41


mysql-test/mysql-test-run.pl:
  Manual merge

into  kahlann.erinye.com:/home/df/mysql/build/mtr-4.1

mysql-test/mysql-test-run.pl:
  add --report-features
mysql-test/include/report-features.test:
  test file showing server features for mysql-test-run.pl --report-features

into  outpost.site:/home/cps/mysql/trees/4.1-runtime-bug9191


configure.in:
  Auto merged
include/my_time.h:
  Auto merged
mysql-test/r/func_time.result:
  Auto merged
mysql-test/r/rename.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
sql-common/my_time.c:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/time.cc:
  Auto merged
mysql-test/t/rename.test:
  choose one of the race problem solutions. It was solved
  differently in -runtime and mainstream

  Added --force-restart pseudo server argument to shell version as well


mysql-test/mysql-test-run.sh:
  Added --force-restart pseudo server argument to shell version as well

Fixes:
- Bug #24089: Race condition in fil_flush_file_spaces()


innobase/fil/fil0fil.c:
  Applied innodb-4.1-ss33
  
  Revision r33:
  innodb-4.1: Merge r1002 from innodb/trunk:
  
  fil_flush_file_spaces(): Copy the system->unflushed_spaces list to an
  array while holding the mutex.  This removes the crash-triggering
  race condition that was introduced when fixing Bug 15653.  (Bug #24089)

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/41

mysql-test/mysql-test-run.pl:
  Allow --mem to be specified as a flag or --mem=<dir>
  Add /tmp to locations to search
  Update comments and usage description

Pass location of charsets dir to mysqltest to avoid using the charsetdir locally installed on machine. 


client/mysqltest.c:
  Add new option --character-sets-dir to mysqltest
  Set MYSQL_SET_CHRSET_DIR before connecting to mysqld if the above variable is set
mysql-test/mysql-test-run.pl:
  Pass $path_charsetsdir to mysqltest

into  mysql.com:/Users/kent/mysql/bk/lic/my41-lic


README:
  Auto merged

  Added LICENSE.mysql, removed LICENSE.doc README.NW.
  Removed obselete section about MySQLEULA.txt and README.NW.
README:
  Added reference to the EXCEPTIONS-CLIENT file.
  Changed reference to the commercial license file.
  Corrected references into chapters in the manual.
.del-MySQLEULA.txt~4a1afd9284f9be5a:
  Delete: Docs/MySQLEULA.txt


README:
  Added reference to the EXCEPTIONS-CLIENT file.
  Changed reference to the commercial license file.
  Corrected references into chapters in the manual.
BitKeeper/deleted/.del-MySQLEULA.txt~4a1afd9284f9be5a:
  Delete: Docs/MySQLEULA.txt
scripts/make_binary_distribution.sh:
  Added LICENSE.mysql, removed LICENSE.doc README.NW.
  Removed obselete section about MySQLEULA.txt and README.NW.

 - Readd --skip-bdb when valgrinding


mysql-test/mysql-test-run.pl:
  Readd --skip-bdb when valgrinding

Correct faulty commit, the opt_tastcase_timeout value is in minutes, to it need to be multiplied with 60 before ping passed to mtr_timer_start 

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint

Make --mem settable with environment variable MTR_MEM and make it possible to pass the directory to use. I.e --mem=<directory>  


include/abi_check.ic:
  Ignore file
include/abi_check:
  Ignore file

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-4.1-maint

  
The Item_func_mod objects never had maybe_null set, so users had no reason 
to expect that they can be NULL, and may therefore deduce wrong results.
Now, set maybe_null.


mysql-test/r/func_test.result:
  Verify that the predictions are true.
mysql-test/t/func_test.test:
  Verify that the predictions are true.
sql/item_func.cc:
  MOD functions may be NULL.

into  outpost.site:/home/cps/mysql/trees/4.1-runtime-bug9191


mysql-test/r/func_time.result:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged

mysql-test/r/rename.result:
  Update result.
mysql-test/t/rename.test:
  Remove the race by replacing sleep with a reap.

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-4.1-maint


configure.in:
  Auto merged
mysql-test/t/ps.test:
  Auto merged
sql/handler.cc:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/table.cc:
  Auto merged
tests/mysql_client_test.c:
  Auto merged
myisam/sort.c:
  Manual merge.
mysql-test/r/innodb_mysql.result:
  Manual merge.
mysql-test/t/innodb_mysql.test:
  Manual merge.
mysys/mf_iocache.c:
  Manual merge.

into  shellback.(none):/home/msvensson/mysql/mysql-4.1-maint

  Raise version number to 4.1.23


configure.in:
  Raise version number to 4.1.23

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.1-maint

- 'false' not defined in C, use FALSE instead.


mysys/my_lock.c:
  Fixed error in windows built:
  'false' not defined in C, use FALSE instead.

into  mysql.com:/usr/home/ram/work/bug22913/my41-bug22913


client/mysql.cc:
  Auto merged

We don't check for errors that may occur during data printing.


client/mysql.cc:
  Fix for bug #22913: mysql --quick doesn't report some errors.
    - check for errors after the data output.

into  bodhi.local:/opt/local/work/mysql-4.1-runtime


mysql-test/r/ps.result:
  Auto merged
mysql-test/t/func_gconcat.test:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged

into  shellback.(none):/home/msvensson/mysql/mysql-4.1-maint

into  shellback.(none):/home/msvensson/mysql/mysql-4.1-maint

(4.1 version, with post-review fixes)
  
  The fix for another Bug (6439) limited FROM_UNIXTIME() to
  TIMESTAMP_MAX_VALUE which is 2145916799 or 2037-12-01 23:59:59 GMT,
  however unix timestamp in general is not considered to be limited 
  by this value. All dates up to power(2,31)-1 are valid.
  
  This patch extends allowed TIMESTAMP range so, that max
  TIMESTAMP value is power(2,31)-1. It also corrects
  FROM_UNIXTIME() and UNIX_TIMESTAMP() functions, so that
  max allowed UNIX_TIMESTAMP() is power(2,31)-1. FROM_UNIXTIME()
  is fixed accordingly to allow conversion of dates up to
  2038-01-19 03:14:07 UTC. The patch also fixes CONVERT_TZ()
  function to allow extended range of dates.
  
  The main problem solved in the patch is possible overflows
  of variables, used in broken-time representation to time_t
  conversion (required for UNIX_TIMESTAMP).


acinclude.m4:
  Add new macro to check time_t range
configure.in:
  Call the macro to check time_t range
include/my_time.h:
  Move time-related defines to proper place.
  Add a function to perform a rough check if
  a TIMESTAMP value fits into the boundaries.
  Note: it is defined as "static inline", as
  otherwise libmysql won't compile (due to the
  way how gcc handles "inline" directive).
mysql-test/r/func_time.result:
  Update test result
mysql-test/r/timezone.result:
  Update test result
mysql-test/r/timezone2.result:
  Update test result
mysql-test/t/func_time.test:
  Add test for Bug#9191 and update test to be consistent
  with new TIMESTAMP boundaries
mysql-test/t/timezone.test:
  Update old tests to be consistent
  with new TIMESTAMP boundaries
mysql-test/t/timezone2.test:
  Update tests for convert_tz to be consistent with new
  TIMESTAMP boundaries
sql/item_timefunc.cc:
  Fix convert_tz to allow dates from the new (extended)
  TIMESTAMP range
sql/mysql_priv.h:
  Move time handling defaults to my_time.h
sql-common/my_time.c:
  Because of increased TIMESTAMP_MAX_VALUE overflows in my_system_gmt_sec()
  became possible. Here we make it safe against the overflows by stepping
  back from the boundary dates which are likely to trigger them.
sql/time.cc:
  Update TIME_to_timestamp to allow conversion of
  extended date range
sql/tztime.cc:
  Fix new (4.1) implementation of broken-down time representation
  to time_t conversion routine to avoid overflows during conversion
  of boundary dates
mysql-test/r/timezone4.result:
  New BitKeeper file ``mysql-test/r/timezone4.result''
mysql-test/t/timezone4-master.opt:
  New BitKeeper file ``mysql-test/t/timezone4-master.opt''
mysql-test/t/timezone4.test:
  New BitKeeper file ``mysql-test/t/timezone4.test''

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.1-maint


mysys/my_chsize.c:
  Auto merged

 - Only read *.pid
 - Only allow it to contain a number 


mysql-test/lib/mtr_io.pl:
  Check that the value read from pidfile is a valid number consisting only of digits
mysql-test/lib/mtr_process.pl:
  Only process .pid files in var/run dir and print a warning if other files are found there.

client/mysqltest.c:
  Make the variables that are referenced from the "command_arg" arrays static to please the NetWare compiler.
  Apparently the arrays can't reference local stack variables.