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| author | unknown <heikki@hundin.mysql.fi> | 2005-03-13 12:49:39 +0200 |
|---|---|---|
| committer | unknown <heikki@hundin.mysql.fi> | 2005-03-13 12:49:39 +0200 |
| commit | a569b08375672b561bd1d15a66fc1dafa69c72a5 (patch) | |
| tree | 051259ff15bee8fda0011d7798a20f4f3471287a /innobase/include/trx0trx.h | |
| parent | dad8e1f59a30e6bdc45bf57d6b3404313d8b2b25 (diff) | |
| download | mariadb-git-a569b08375672b561bd1d15a66fc1dafa69c72a5.tar.gz | |
set_var.cc, mysqld.cc, ha_innodb.cc, sql_class.h:
Add a settable session variable innodb_support_xa; setting it to 0 can save up to 10 % of CPU time and 150 bytes of space in each undo log
trx0trx.h, trx0undo.c, trx0trx.c, trx0roll.c:
Enable XA if innodb_support_xa is not set to 0; make prepare to do log fsync's according to innodb_flush_log_at_trx_commit
innobase/trx/trx0roll.c:
Enable XA if innodb_support_xa is not set to 0; make prepare to do log fsync's according to innodb_flush_log_at_trx_commit
innobase/trx/trx0trx.c:
Enable XA if innodb_support_xa is not set to 0; make prepare to do log fsync's according to innodb_flush_log_at_trx_commit
innobase/trx/trx0undo.c:
Enable XA if innodb_support_xa is not set to 0; make prepare to do log fsync's according to innodb_flush_log_at_trx_commit
innobase/include/trx0trx.h:
Enable XA if innodb_support_xa is not set to 0; make prepare to do log fsync's according to innodb_flush_log_at_trx_commit
sql/sql_class.h:
Add a settable session variable innodb_support_xa; setting it to 0 can save up to 10 % of CPU time and 150 bytes of space in each undo log
sql/ha_innodb.cc:
Add a settable session variable innodb_support_xa; setting it to 0 can save up to 10 % of CPU time and 150 bytes of space in each undo log
sql/mysqld.cc:
Add a settable session variable innodb_support_xa; setting it to 0 can save up to 10 % of CPU time and 150 bytes of space in each undo log
sql/set_var.cc:
Add a settable session variable innodb_support_xa; setting it to 0 can save up to 10 % of CPU time and 150 bytes of space in each undo log
Diffstat (limited to 'innobase/include/trx0trx.h')
| -rw-r--r-- | innobase/include/trx0trx.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h index 61d372a824a..9db69261468 100644 --- a/innobase/include/trx0trx.h +++ b/innobase/include/trx0trx.h @@ -369,6 +369,11 @@ struct trx_struct{ XID xid; /* X/Open XA transaction identification to identify a transaction branch */ + ibool support_xa; /* normally we do the XA two-phase + commit steps, but by setting this to + FALSE, one can save CPU time and about + 150 bytes in the undo log size as then + we skip XA steps */ dulint no; /* transaction serialization number == max trx id when the transaction is moved to COMMITTED_IN_MEMORY state */ |