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• --log-short-format 

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Log less information to the slow query log, if it has been activated. 

• --log-tc= file_name 

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The name of the memory-mapped transaction coordinator log file (for XA transactions that affect multiple storage engines when the binary log is disabled). The default name is tc.log . The file is created under the data directory if not given as a full path name. This option is unused. 

• --log-tc-size= size 

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The size in bytes of the memory-mapped transaction coordinator log. The default and minimum values are 6 times the page size, and the value must be a multiple of the page size. 

• --memlock 

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Lock the mysqld  process in memory. This option might help if you have a problem where the operating system is causing mysqld  to swap to disk. 

--memlock  works on systems that support the mlockall()  system call; this includes Solaris, most Linux distributions that use a 2.4 or higher kernel, and perhaps other Unix systems. On Linux systems, 

