Emergency

Monthly Archives: July 2011

Intel 320 SSD read performance

(this is cross-post from https://www.percona.com/blog/) While PCI-e Flash cards show great performance, I am often asked about alternatives, as price for PCI-e cards is still significant and not acceptable for small companies and startups. Intel …

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Cage Match: OldSQL, NoSQL and NewSQL

  When I interviewed at Tokutek, I met a team of distinguished academics and engineers who could calmly and thoughtfully wax eloquent about the finer points of B-tree and Fractal Tree™ indexing,  drive I/Os, and …

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Reasons for MySQL Replication Lag

One common theme in the questions our MySQL Support customers ask is MySQL Replication Lag. The story is typically along the lines everything is same as before and for some unknown reason the slave is …

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Percona Server 5.1.57 with Galera 0.8.1

Codership team announced availability of MySQL/Galera 0.8.1, which is minor release, but actually it has bunch of improvements that makes Galera replication more user friendly (there are many bugs fixed, reported by me personally, what …

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How Innodb Contention may manifest itself

Even though multiple fixes have been implemented in Percona Server and MySQL 5.5, there are still workloads in which case mutex (or rw-lock) contention is a performance limiting factor, helped by ever growing number of …

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What’s required to tune MySQL?

I got a serendipitous call (thanks!) yesterday asking what would be needed to tune[1] a database for better performance. It is a question that I hear often, but I never thought about answering it in …

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This Weekend in Japan

We were happy to see a lot of folks from Japan on Twitter this weekend having a discussion about MySQL and Tokutek. While we always endeavor to explain ourselves as simply as possible, hearing what …

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Percona Xtrabackup 1.6.2 released!

Percona is glad to announce the release of Percona XtraBackup 1.6.2 on 25 July, 2011 (Downloads are available here and from thePercona Software Repositories). This release is purely composed of bug fixes and is the current …

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Percona Live London!

The first Percona Live Conferences in San Francisco and New York were such wonderful successes that we have been inspired to take it across the ocean into the UK. We are therefore proud to announce …

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Server Outages at Percona

On Saturday July 16, Percona suffered a catastrophic failure of three disks on our primary web server. This was compounded by unexpected problems in recovery from our backups arising from staff changes. The net result …

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