…our repositories. Benchmark showing the impact of memory allocators on MySQL performance can be found in this blogpost. This release of …Jaakola). Conflicting prepared statements in multi-master use case could cause node to hang. This was happening due to prepared statement execution loop, which…
Post: Is Synchronous Replication right for your app?
May 14, 2013 By 18 Comments
…MySQL replication from this instance, since MySQL replication is asynchronous. What about semi-sync MySQL…performance, only a upper bound. The best performance…statement transactions since it cannot be assumed that those are not applying application logic in between the statements… not prepared to …
Post: Benchmarking Percona Server TokuDB vs InnoDB
May 7, 2013 By 32 Comments
… INSERT .. ON DUPLICATE KEY UPDATE statements for that), so it will…performs if PK is (`id`,`hid`,`mid`). This also will affect select performance…back_log = 50 max_connections = 2000 max_prepared_stmt_count=500000 max_connect_errors…= 1 myisam_recover socket=/var/lib/mysql/mysql.sock user=root skip-…
Post: MySQL Prepared Statements
August 2, 2006 By 21 Comments
…MySQL Prepared statements – many of the problems such as extra round trip, non working query cache or non working prepared statements for some of the statements…
Post: MySQL Wish for 2013 - Better Memory Accounting
December 31, 2012 By 6 Comments
… to Performance Schema “wait names” we could get something similar in terms of memory allocation target, which could be something like “Prepared Statement… addition to monitoring it which I’m sure hosting providers, MySQL as a Service vendors will especially appreciate as currently they…
Post: 10+ Ways to Crash or Overload MySQL
November 13, 2007 By 20 Comments
…size low, but then performance would suffer. Prepared Statements Number – Happily now there is a limit on total number of prepared statements (max_stmt_count…consumed by single prepared statement you can create statement with thousands of placeholders and send data for each of them using mysql_stmt_…
Post: Handling big result sets
June 26, 2006 By 13 Comments
… than mysql_use_result, as you can see in certain conditions it could be opposite. Prepared statements are typically considered for performance reasons if statement… have query which retrieves a lot of data from MySQL prepared statements may also perform better, probably because of binary protocol and so no…
Post: MySQL Query Cache
July 27, 2006 By 70 Comments
… helpful for MySQL Performance optimization tasks but there are number of things you need to know. First let me clarify what MySQL Query… not support prepared statements and cursors Query Cache works with query text and want full result set at once. In prepared statements there is…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…MySQL manual…Performance_schema_mutex_classes_lostblogpercona.commanual Performance_schema_mutex_instances_lostblogpercona.commanual Performance_schema_rwlock_classes_lostblogpercona.commanual Performance_schema_rwlock_instances_lostblogpercona.commanual Performance….commanual Prepared_stmt_…
Post: Wishes for new "Pure PHP" MySQL driver
October 28, 2006 By 17 Comments
…. Emulated Prepared Statements I would like to have easy time to switch from PS to standard statements to check bugs and performance difference without… like to be able to run multiple queries for multiple MySQL connections at once. For scale out applications data to generate…
