October 22, 2014

Followup questions to ‘What’s new in Percona XtraDB Cluster 5.6′ webinar

Thanks to all who attended my webinar yesterday.  The slides and recording are available on the webinar’s page.  I was a bit overwhelmed with the amount of questions that came in and I’ll try to answer them the best I can here. Q: Does Percona XtraDB Cluster support writing to multiple master? Yes, it does.  However, […]

Percona XtraBackup 2.1.7 is now available

Percona is glad to announce the release of Percona XtraBackup 2.1.7 on January 24th, 2014. Downloads are available from our download site here and Percona Software Repositories. This release is the current GA (Generally Available) stable release in the 2.1 series. Percona XtraBackup is an open source, free MySQL hot backup software that performs non-blocking […]

How Can Percona MySQL Server Development Services Help ?

At Percona we offer a number of services. One of them, Custom MySQL Server Development, is commonly the most misunderstood and undervalued. There are a lot of ways Percona custom MySQL server development can help your business be more successful with MySQL. Here are some ways: Bugs – There are Bugs in MySQL, Percona Server, […]

Announcement of Percona XtraDB Cluster 5.5.20 GA release

I am excited to announce the availability of the GA release of our new product Percona XtraDB Cluster. Percona XtraDB Cluster is a High Availability and Scalability solution for MySQL Users and is based on Percona Server 5.5.20. With this release we make clustering very easy and affordable for everyone. You can convert your existing […]

Announcement of Percona XtraDB Cluster (alpha release)

I am happy to announce the availability of alpha release of our new product Percona XtraDB Cluster. Percona XtraDB Cluster is High Availability and Scalability solution for MySQL Users and based on Percona Server 5.5.17 Percona XtraDB Cluster provides: Synchronous replication. Transaction either commited on all nodes or none. Multi-master replication. You can write to […]

Global Transaction ID and other patches available!

I do not know if you noticed it, but Google (Mark Callaghan, Justin Tolmer and their internal mysql-team) made a great contribution to MySQL. Patches global transaction IDs, binlog event checksums and crash-safe replication state are separated and published on Launchpad (https://code.launchpad.net/~jtolmer/mysql-server/global-trx-ids). For me it was a big wall in using these patches that they […]

How InnoDB handles REDO logging

Xaprb (Baron) recently blogged about how InnoDB performs a checkpoint , I thought it might be useful to explain another important mechanism that affects both response time and throughput – The transaction log.

Estimating Replication Capacity

It is easy for MySQL replication to become bottleneck when Master server is not seriously loaded and the more cores and hard drives the get the larger the difference becomes, as long as replication remains single thread process. At the same time it is a lot easier to optimize your system when your replication runs […]

How innodb_open_files affects performance

Recently I looked at table_cache sizing which showed larger table cache does not always provides the best performance. So I decided to look at yet another similar variable – innodb_open_files which defines how many files Innodb will keep open while working in innodb_file_per_table mode. Unlike MyISAM Innodb does not have to keep open file descriptor […]

Compression for InnoDB backup

Playing with last version of xtrabackup and compress it I noticed that gzip is unacceptable slow for both compression and decompression operations. Actually Peter wrote about it some time ago, but I wanted to review that data having some new information. In current multi-core word the compression utility should utilize several CPU to speedup operation, […]