Re: Slow query. Why is it slow?Posted by: ben jaz Date: May 20, 2013 12:01AM CREATE TABLE `products_status` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(255) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `title` (`title`) ) ENGINE=InnoDB AUTO_INCREMENT=5 ...
You can view the slow SQL logs for slow SQL queries and view their performance characteristics (if any) to locate the cause.To learn how to view RDS for MySQL logs, see V
It is a feature-rich open-source MySQL proxy solution, that allows query routing for the most common MySQL architectures (PXC/Galera, Replication, Group Replication, etc.). It allows sharding by configuring a set of backend servers (shards) and a set of query rules, to route the applicatio...
(with exeption of MySQL Cluster) and MySQL issues IO requests one by one for query execution, which means if single query execution time is your concern many hard drives and large number of CPUs will not help. Sometimes it is good idea to manually split query into several, run in parallel...
How do I query the allocated heap memory size and free heap memory size of an application? How do I obtain system logs when an application fault occurs? How do I use the hdc command to send a local file to a remote device? How do I check whether an application is a system appli...
Over the past few years,MySQL AB has addressed the need of larger sites by adding features that necessarily slow down retrieval, but its modular design lets you ignore the advanced features and maintain the suppleness and speed for which MySQL is famous. ...
How do I query the allocated heap memory size and free heap memory size of an application? How do I obtain system logs when an application fault occurs? How do I use the hdc command to send a local file to a remote device? How do I check whether an application is a system appli...
There is of course no easy way to confirm if this is a bug. So in order to figure it out, you should rather look for evidence that it is not a bug. That what you see is just the effect of a standard operation, which MySQL has to perform to clean up after a query or a transac...
No one is using the system yet - meaning Hadoop (or any other server) is not being used by anyone yet. However, the MySQL process is just hammering the CPU - which seems odd to me. I have let it run for over 24 hours (thinking it would slow down at some point, but...
> worry that the Query Cache is involved. Please > turn off the QC (or use SQL_NO_CACHE) when doing > timings. > > How close to the end of the table is id=5809978 > (the fast Query#7)? How far from the end is > 5490881 (the slow Query#9)? The diff value is the ...