Monthly Archives - February 2013

Deadline Near for BOFs and Lightning Talk Submissions for Percona Live MySQL Conference

The deadline is fast approaching to submit proposals for the Birds of a Feather Sessions (BOFs) and the Lightning Talks (presented during the Wednesday Evening Networking Reception) for the Percona Live MySQL Conference and Expo 2013. Applications for the DotOrg Pavilion close soon as well. The deadline is February 24th for all three opportunities […]

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Webinar: Building a highly scaleable distributed row, document or column store with MySQL and Shard-Query

On Friday, February 15, 2013 10:00am Pacific Standard Time, I will be delivering a webinar entitled “Building a highly scaleable distributed row, document or column store with MySQL and Shard-Query”
The first part of this webinar will focus on why distributed databases are needed, and on the techniques employed by Shard-Query to implement a distributed […]

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Concurrency Improvements in TokuDB v6.6 (Part 2)

In Part 1, we showed performance results of some of the work that’s gone in to TokuDB v6.6. In this post, we’ll take a closer look at how this happened, on the engineering side, and how to think about the performance characteristics in the new version.
Background
It’s easiest to think about our concurrency changes […]

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Can’t Create Thread: Errno 11 (A Tale of Two Ulimits)

Recently some of my fellow Perconians and I have noticed a bit of an uptick in customer cases featuring the following error message:

Shell

SQLSTATE[HY000] [1135] Can’t create a new thread (errno 11); if you are not
out of available memory, you can consult the manual for a possible OS-dependent bug.

12

SQLSTATE[HY000] [1135] Can’t create a new […]

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