June 20, 2013

Post: InnoDB Full-text Search in MySQL 5.6 (part 1)

…the community editions of MySQL 5.5.30 and MySQL 5.6.10 with no tuning whatsoever (with …likes lower_case_table_names = 1 in /etc/my.cnf), but I think it’s even worse that…happens: mysql> set global innodb_ft_aux_table=’test/dir_test_innodb’; mysql> set global innodb_optimize_fulltext_only=1; mysql> …

Post: New SpecJAppServer results at MySQL and Sun.

… previous SpecJAppServer Benchmarks several years ago while being employed by MySQL. These are great results, plus they can be relevant to… does it mean MySQL did not scale well to 8 cores on this benchmark ? Now lets look at Java Settings: JDBC Pool… better to disable them. The MySQL Settings are probably what is the most interesting: MySQL 5.0 Tuning in /etc/my.cnf (included in FDA) [mysqld…

Post: MySQL: what read_buffer_size value is optimal ?

…_size tuning ? If you want fast full table scans for large table you should set this variable to some high value. Sample my.cnf values on large memory sizes recommend 1M settings and MySQL built-in default is 128K. Some people having a lot of memory and few concurrent connections set it…

Comment: When is it a time to upgrade memory ?

… you more information, this is my.cnf: [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql max_connections=600 connect_timeout=30…=utf8_unicode_ci default-character-set=utf8 default-storage-engine=InnoDB bulk_insert_buffer_size=8M # Innobd Tuning #innodb_force_recovery=2…

Comment: Innodb Performance Optimization Basics

…’ve tuned everything up in the settings and have a better understanding of what each setting does in the my.cnf, I have it set to… not know is that if you set your buffers and settings too high and restart your mysql server, mysql wont instantly complain. What I think happens is it either ignores these settings completely…

Comment: Is MySQL 5.6 slower than MySQL 5.5?

… to 11% yes… Perhaps I should say MySQL 5.5 is 11% faster than MySQL 5.6 rather than 5.6 is… used MySQL Sandbox set up with MySQL 5.6 and 5.5 in their default settings. I did not do anything to tune performance schema… “skip-performance-schema” to my.cnf I think you guys in development team grossly overestimate how much tuning the general user is going…

Comment: MySQL 5.5 and MySQL 5.6 default variable values differences

…://dev.mysql.com/doc/refman/5.6/en/server-default-changes.html , see where we adjusted settings and try the settings… on. QC off tends to be best for well tuned OLTP and web sites using queries that mostly return… it in the server defaults but in the default my.cnf file that we ship. It’s also done by…

Post: Side load may massively impact your MySQL Performance

mysql-password=msandbox –mysql-socket=/tmp/mysql_sandbox5516.sock run [root@localhost msb_ps_5_5_15]# time mysqldump –defaults-file=my.sandbox.cnf… very small period of time so setting innodb_old_blocks_time variable to …from buffer pool at all. For advanced tuning you might also look into changing …

Comment: Why MySQL could be slow with large tables ?

Eddie, this depends on 1. Your MY.CONF settings http://www.notesbit.com/index.php/web-mysql/mysql/mysql-tuning-optimizing-my-cnf-file/ 2. The type of table it is — is it MYISAM or INNODB? For InnoDB, you may also fix the INNODB specific settings.

Comment: The ultimate tool for generating optimal my.cnf files for MySQL

… general mysql server is far worse than having it set to a small value such as 1MB. The problem with the default my.cnf which comes with mysql is that… in mysql so you as an admin only have to care for lets say keybuff + max mem usage and then let mysql tune