MySQL Unreliable
Need a little help for MySQL users. I'm running several servers that are using a common MySQL server for bayes for all the SA servers. What I'm seeing is that MySQL is just plain unreliable. The database is often corrupted and it does so in a manner that basically causes SA to hang until it times out. I'm not sure what I'm doing wrong or if there's some my.cnf settings I'm missing. I could use some tips from those of you who are hitting MySQL hard or might suggest something other than MySQL that I should use for bayes. Thanks in advance.
Re: MySQL Unreliable
At 06:30 16-05-2008, Marc Perkel wrote: I'm running several servers that are using a common MySQL server for bayes for all the SA servers. What I'm seeing is that MySQL is just plain unreliable. The database is often corrupted and it does so in a manner that basically causes SA to hang until it times out. Don't use MyISAM. http://dev.mysql.com/doc/mysql/en/innodb.html Regards, -sm
Re: MySQL Unreliable
Marc Perkel wrote: Need a little help for MySQL users. I'm running several servers that are using a common MySQL server for bayes for all the SA servers. What I'm seeing is that MySQL is just plain unreliable. The database is often corrupted and it does so in a manner that basically causes SA to hang until it times out. I'm not sure what I'm doing wrong or if there's some my.cnf settings I'm missing. I could use some tips from those of you who are hitting MySQL hard or might suggest something other than MySQL that I should use for bayes. Thanks in advance. We use innodb for all the sa_bayes tables. Here's some tuning settings we use in my.cnf for the server: query_cache_limit = 1M query_cache_size = 12M query_cache_type = 1 innodb_additional_mem_pool_size=12M innodb_buffer_pool_size=70M innodb_log_file_size=10M
Re: MySQL Unreliable
SM wrote: At 06:30 16-05-2008, Marc Perkel wrote: I'm running several servers that are using a common MySQL server for bayes for all the SA servers. What I'm seeing is that MySQL is just plain unreliable. The database is often corrupted and it does so in a manner that basically causes SA to hang until it times out. Don't use MyISAM. http://dev.mysql.com/doc/mysql/en/innodb.html OK - I'm trying that. So innodb is better?
Re: MySQL Unreliable
Hi Mark, At 09:15 16-05-2008, Marc Perkel wrote: OK - I'm trying that. So innodb is better? InnoDB supports transactions. The entire table is not locked as with MyISAM when data is inserted, updated or deleted. That's better in the case of a Bayes database. In general, there is a performance hit when using InnoDB. You should however see better performance for Bayes. In your original message, you mentioned that the db was being corrupted. That shouldn't happen unless there was an incorrect shutdown of the MySQL server. The hang you mentioned might be a query waiting on a lock. Regards, -sm
