Monthly Archives - April 2014

Galera 3.5 for Percona XtraDB Cluster 5.6 is now available

Galera 3.5 improvements are now available for use with Percona XtraDB Cluster 5.6.
Bugs fixed in Galera 3.5 include:

A crash due to of-by-one error in certification index cleanup has been fixed. Bugs fixed #1309227 and #1267507.
Fixed the corruption in gcache that could lead to a cluster crash. Bugs fixed #1301616 and #1152565.
Joining node crashed under […]

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ScaleArc: Real-world application testing with WordPress (benchmark test)

ScaleArc recently hired Percona to perform various tests on its database traffic management product. This post is the outcome of the benchmarks carried out by me and ScaleArc co-founder and chief architect, Uday Sawant.
The goal of this benchmark was to identify ScaleArc’s overhead using a real-world application – the world’s most popular (according to […]

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Thoughts on Small Datum – Part 2

If you did not read my first blog post about Mark Callaghan’s (@markcallaghan) benchmarks as documented in his blog, Small Datum, you may want to skim through it now for a little context.
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On March 11th, Mark, a former Google and now Facebook database guru, published an insertion rate benchmark comparing MySQL outfitted with the […]

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OOM relation to vm.swappiness=0 in new kernel

I have recently been involved in diagnosing the reasons behind OOM invocation that would kill the MySQL server process. Of course these servers were primarily running MySQL. As such the MySQL server process was the one with the largest amount of memory allocated.
But the strange thing was that in all the cases, there was […]

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Managing farms of MySQL servers with MySQL Fabric

While built-in replication has been a major cause for MySQL’s wide adoption, official tools to help DBAs manage replication topologies have typically been missing from the picture. The community has produced many good products to fill in this gap, but recently, Oracle has been filling it too with the addition of MySQL Utilities to the mix.
One […]

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