PlanetMysql.ru — информация о СУБД MySQL

It's that time of the year again — the nice folks at FOSDEM have granted us a developer room at their upcoming conference (February 5+6 2011 in Brussels, Belgium)!

As usual there were more applications than they were able to accommodate, so we are very grateful for this opportunity for collaboration. Titled "MySQL and Friends", our room next year will be H.2213 with a capacity of 100 seats. It will be at our disposal on Saturday 5th, from 13:00 till 19:00. Like last year, we would like to set up a schedule of talks related to the MySQL server and the various projects that surround it. Each talk will last 20 minutes, plus 5 minutes of Q&A and a 5 minute break for switching speakers, giving us 12 slots in total to fill with excellent tech talks. Take a look at this year's schedule for some examples! I hope we can assemble an even more exciting and interesting schedule for next year.

Quoting from my last year's call for papers:

We are looking for covering a wide range of topics that attract both MySQL DBAs as well as application developers that work with MySQL as their database of choice. Are you developing a new storage engine or other plugin? Do you want to share your experiences and best practices in administering or deploying MySQL servers? Did you develop a new method to scale a MySQL setup? Let us and the audience know about it! You can submit your talk proposal via this submission form.

The deadline for turning in your proposal is Sunday, 26th of December, 2010, after which there will be a voting and rating period to identify the most interesting and attractive topics.

Please check the FOSDEM 2011 information page on the MySQL Forge Wiki for more details and don't hesitate to contact me directly, if you have any questions or suggestions. I look forward to your proposals!
PlanetMySQL Voting: Vote UP / Vote DOWN

The UK Oracle User Group (UKOUG) is an independent non-profit organisation of users of Oracle products in the UK, which organizes over 80 events per year all across the UK and Ireland. They have more that 15.000 members and were established over 25 years ago. Currently, they are in the final stretch of the preparations for their annual Technology & E-Business Conference, which will take place from November, 29th - December, 1st in Birmingham (UK).

For the first time, the conference will host a dedicated stream of presentations related to MySQL, which is scheduled for Wednesday (Dec. 1st). Targeted at database administrators, developers as well as users new to MySQL, there will be presentations from well-known speakers and participants of the MySQL community as well as members of the MySQL Team at Oracle.

Attendees will learn about best practices and gain valuable insight into the MySQL Server and related applications and tools.

Highlights include a keynote about the Oracle strategy and plans for MySQL by Richard Mason, Vice President of MySQL Sales and Consulting at Oracle, talks about High Availability with MySQL and MySQL Cluster as well as InnoDB Performance Tuning best practices. Other sessions will cover related products and projects from the MySQL ecosystem, that help to make the most of MySQL. See the full agenda on the conference web site for details and speaker information.

Registration for the event is still open. Get your tickets now!

At MySQL, we know our users want Performance, Scalability, Reliability, and Availability, regardless of the platform the choose to deploy. We have always had excellent benchmarks on Linux, and with MySQL 5.5, we are also working hard on improving performance on Windows.

The original patch of improving Windows performance was developed by MySQL senior developer Vladislav Vaintroub; benchmarks by QA engineer Jonathan Miller. We integrated the patch into MySQL 5.5 release.

The following two charts show the comparison of MySQL 5.5 vs. MySQL 5.1 (plugin) vs. MySQL 5.1 (builtin) using sysbench:

MySQL 5.5 includes a Windows performance patch, plus other performance improvements. This Windows performance patch has two part: part one is to fix the inefficiency of InnoDB slow mutex implementation on Windows – implement slow mutex as CriticalSection; and part two is to take advantage of condition variables on Windows Vista or newer Windows operating systems. Condition variables are not supported on Windows Server 2003 and Windows XP/2000.

What if I have an old Windows on which condition variables are not supported? Well, you can still benefit from the new slow mutex implementation; but will not be able to take the advantage of condition variables. The same binary runs on old Windows too. The InnoDB does a dynamic checking during start-up, to see whether condition variables are supported by the operating system it runs on.

Another benefit from this patch is the reduced consumption of Windows kernel objects (or handles), which deserves another blog on its own.

Download MySQL 5.5 RC release to give it a try for yourself! Thanks to Vladislav and Jonathan for their hard work!

Hardware configuration and operating system

Intel x86_64, 4 CPU x 2 Cores , 3.166 GHz, 8GB RAM, and Windows Server 2008.

MySQL / InnoDB configuration

Relevant my.cnf parameters:

max_connections=500
max_connect_errors=50
table_cache=2048
query-cache-size=0
query-cache-type=0
disable-log-bin
transaction_isolation=REPEATABLE-READ
innodb-file-per-table=1
innodb_data_file_path=ibdata1:200M:autoextend
innodb_buffer_pool_size=4G
innodb_additional_mem_pool_size=20M
innodb_log_file_size=650M
innodb_log_files_in_group=2
innodb_log_buffer_size=16M
innodb_support_xa=0
innodb_doublewrite=1
innodb_thread_concurrency=0
innodb_flush_log_at_trx_commit=1


At MySQL, we know our users want Performance, Scalability, Reliability, and Availability, regardless of the platform the choose to deploy. We have always had excellent benchmarks on Linux, and with MySQL 5.5, we are also working hard on improving performance on Windows.

The original patch of improving Windows performance was developed by MySQL senior developer Vladislav Vaintroub; benchmarks by QA engineer Jonathan Miller. We integrated the patch into MySQL 5.5 release.

The following two charts show the comparison of MySQL 5.5 vs. MySQL 5.1 (plugin) vs. MySQL 5.1 (builtin) using sysbench:

MySQL 5.5 includes a Windows performance patch, plus other performance improvements. This Windows performance patch has two part: part one is to fix the inefficiency of InnoDB slow mutex implementation on Windows – implement slow mutex as CriticalSection; and part two is to take advantage of condition variables on Windows Vista or newer Windows operating systems. Condition variables are not supported on Windows Server 2003 and Windows XP/2000.

What if I have an old Windows on which condition variables are not supported? Well, you can still benefit from the new slow mutex implementation; but will not be able to take the advantage of condition variables. The same binary runs on old Windows too. The InnoDB does a dynamic checking during start-up, to see whether condition variables are supported by the operating system it runs on.

Another benefit from this patch is the reduced consumption of Windows kernel objects (or handles), which deserves another blog on its own.

Download MySQL 5.5 RC release to give it a try for yourself! Thanks to Vladislav and Jonathan for their hard work!

Hardware configuration and operating system

Intel x86_64, 4 CPU x 2 Cores , 3.166 GHz, 8GB RAM, and Windows Server 2008.

MySQL / InnoDB configuration

Relevant my.cnf parameters:

max_connections=500
max_connect_errors=50
table_cache=2048
query-cache-size=0
query-cache-type=0
disable-log-bin
transaction_isolation=REPEATABLE-READ
innodb-file-per-table=1
innodb_data_file_path=ibdata1:200M:autoextend
innodb_buffer_pool_size=4G
innodb_additional_mem_pool_size=20M
innodb_log_file_size=650M
innodb_log_files_in_group=2
innodb_log_buffer_size=16M
innodb_support_xa=0
innodb_doublewrite=1
innodb_thread_concurrency=0
innodb_flush_log_at_trx_commit=1