Emergency

Monthly Archives: August 2010

Introducing tcprstat, a TCP response time tool

Ignacio Nin and I (mostly Ignacio) have worked together to create tcprstat[1], a new tool that times TCP requests and prints out statistics on them. The output looks somewhat like vmstat or iostat, but we’ve …

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Loading Air Traffic Control Data with TokuDB 4.1.1

TokuDB has a big advantage over B-trees when trickle loading data into existing tables. However, it is possible to preprocess the data when bulk loading into empty tables or when new indexes are created. TokuDB …

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InnoDB memory allocation, ulimit, and OpenSUSE

I recently encountered an interesting case. A customer reported that mysqld crashed on start on OpenSUSE 11.2 kernel 2.6.31.12-0.2-desktop x86_64   with 96 GB RAM when the innodb_buffer_pool_size was set to anything more than 62 …

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Announcing TokuDB v4.1.1

Tokutek is pleased to announce immediate availability of TokuDB for MySQL, version 4.1.1. It is ideally suited for delivering fast response times for complex / high-volume Web applications that must simultaneously store and query large …

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High availability for MySQL on Amazon EC2 – Part 4 – The instance restart script

This post is the fourth of a series that started here. From the previous of this series, we now have resources configured but instead of starting MySQL, Pacemaker invokes a script to start (or restart) …

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Percona talks at OpenSQL Camp this weekend

Four Perconians (perconites?) will be at OpenSQL Camp in Sankt Augustin, Germany this weekend presenting talks on: Recovery of Lost or Corrupted InnoDB Tables Keep your MySQL backend online no matter what XtraDB — InnoDB …

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Announcing Training for Operations Teams

We’re opening up registration for our new training courses today.  In short: we are moving from two days to a new four-day format.  The new additions are created by: Splitting our current InnoDB day in …

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Testing MySQL column stores

Recently I had the opportunity to do some testing on a large data set against two MySQL column-store storage engines. I’d like to note that this effort was sponsored by Infobright, but this analysis reflects …

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Announcing TokuDB v4.1

Tokutek is pleased to announce immediate availability of TokuDB for MySQL, version 4.1. It is designed for continuous querying and analysis of large volumes of rapidly arriving and changing data, while maintaining full ACID properties. …

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On “Replace Into”, “Insert Ignore”, Triggers, and Row Based Replication

In posts on June 30 and July 6, I explained how implementing the commands “replace into” and “insert ignore” with TokuDB’s fractal trees data structures can be two orders of magnitude faster than implementing them …

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