All of Percona’s open-source software products, in one place, to download as much or as little as you need.
![Benchmarking IBM eXFlash™ DIMM with sysbench fileio](https://cdn-ak-scissors.b.st-hatena.com/image/square/565d34c1fe9b03d84a28341b656529a6708accf3/height=288;version=1;width=512/https%3A%2F%2Fwww.percona.com%2Fblog%2Fwp-content%2Fuploads%2F2014%2F07%2Fexflash_fileio_async_read_tp.png)
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
If you’ve been following this blog (my colleague, David Busby, posted about it yesterday) or any tech news outlet in the past few days, you’ve probably seen some mention of the “Heartbleed” vulnerability in certain versions of the OpenSSL library. So what is ‘Heartbleed’, really?In short, Heartbleed is an information-leak issue. An attacker can exploit this bug to retrieve the contents of a server
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
The other day I was working on an issue where one of the slaves was showing unexpected lag. Interestingly with only the IO thread running the slave was doing significantly more IO as compared to the rate at which the IO thread was fetching the binary log events from the master. I found this out by polling the SLAVE STATUS and monitoring the value of Read_Master_Log_Pos as it changed over time. The
Most technologies achieving high-availability for MySQL need a load-balancer to spread the client connections to a valid database host, even the Tungsten special connector can be seen as a sophisticated load-balancer. People often use hardware load balancer or software solution like haproxy. In both cases, in order to avoid having a single point of failure, multiple load balancers must be used. Lo
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Percona is glad to announce the release of Percona Monitoring Plugins 1.1. The components are designed to integrate seamlessly with widely deployed solutions such as Nagios, Cacti and Zabbix, and are delivered in the form of templates, plugins, and scripts. In this release we have added MySQL template for Zabbix 2.0.x adopted from the existing Cacti one. Changelog: * Added MySQL template for Zabbi
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
What this means in practical terms is that a MySQL instance has reached its maximum allowable limit for client connections. Until connections are closed, no new connection will be accepted by the server. I’d like to discuss some practical advice for preventing this situation, or if you find yourself in it, how to recover. Accurately Tune the max_connections ParameterThis setting defines the maxim
Percona is glad to announce the release of Percona Monitoring Plugins 1.0.3 for MySQL — high-quality components to add enterprise-grade MySQL monitoring and graphing capabilities to your existing in-house, on-premises monitoring solutions. The components are designed to integrate seamlessly with widely deployed solutions such as Nagios and Cacti, and are delivered in the form of templates, plugins
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
I’ve never been a very big fan of MyISAM; I would argue that in most situations, any possible advantages to using MyISAM are far outweighed by the potential disadvantages and the strengths of InnoDB. However, up until MySQL 5.6, MyISAM was the only storage engine with support for full-text search (FTS). And I’ve encountered many customers for whom the prudent move would be a migration to InnoDB, b
mysql [localhost] {msandbox} (test) > select var55.variable_name,left(var55.variable_value,40) value55, left(var56.variable_value,40) var56 from var55 left join var56 on var55.variable_name=var56.variable_name where var55.variable_value!=var56.variable_value; +---------------------------------------------------+------------------------------------------+-----------------------------------------
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