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WL#1595 "Optionally fsync() the binlog after every statement":

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New option --sync-binlog=x (and global settable variable) which will fsync the binlog
after every x-th disk write to it. That is, if in autocommit mode, after every x-th statement
written to the binlog; if using transactions, after every x-th transaction written to the binlog.
x==0 means no fsync. x==1 is the slowest.
There is no test added for this, I have just checked that it works as --sync-binlog=1 dramatically
slows down mysqld.
Made sync-frm a global settable variable.
This commit is contained in:
guilhem@mysql.com
2004-06-10 15:56:13 +02:00
parent ec5b55f8e1
commit 73411a2ed5
5 changed files with 58 additions and 7 deletions
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sql/mysql_priv.h
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@ -858,7 +858,7 @@ extern ulong max_binlog_size, max_relay_log_size;
extern ulong rpl_recovery_rank, thread_cache_size;
extern ulong com_stat[(uint) SQLCOM_END], com_other, back_log;
extern ulong specialflag, current_pid;
extern ulong expire_logs_days;
extern ulong expire_logs_days, sync_binlog_period, sync_binlog_counter;
extern my_bool relay_log_purge;
extern uint test_flags,select_errors,ha_open_options;
extern uint protocol_version, mysqld_port, dropping_tables;