SHOW PROFILES shows how much time MySQL spends in various phases of query execution, but it isn’t a full-featured profile. By that, I mean that it doesn’t show similar phases aggregated together, doesn’t sort them by worst-first, and doesn’t show the relative amount of time consumed. I’ll profile the “nicer_but_slower_film_list” included with the Sakila sample [...]
My talks on PL MySQL Conference (+free book inside)
February 14, 2012 By Leave a Comment
On coming PL MySQL conference 2012 I will give one tutorial: Percona XtraBackup: install, usage, tricks. This tutorial I will do in joint with Alexey Kopytov, the lead developer of Percona XtraBackup. Our intent is to provide the comprehensive overview of the XtraBackup architecture and features, and we will touch future roadmap. This is all [...]
Three ways that the poor man’s profiler can hurt MySQL
December 2, 2011 By 19 Comments
Over the last few years, Domas’s technique of using GDB as a profiler has become a key tool in helping us analyze MySQL when customers are having trouble. We have our own implementation of it in Percona Toolkit (pt-pmp) and we gather GDB backtraces from pt-stalk and pt-collect. Although it’s helped us figure out a [...]
Win a free ticket to Percona Live London!
August 19, 2011 By Leave a Comment
Win a free ticket to Percona Live London on October 24-25! Watch @percona on Twitter, and retweet our TGIF contest tweet to enter. We’ll pick a random retweet and give away a free ticket each week. If you don’t win this time, try again, or register and get the early-bird discount (but don’t wait too long: it expires [...]
Introducing our Percona Live speakers
May 10, 2011 By 4 Comments
We have mostly finalized the Percona Live schedule at this point, and I thought I’d take a few minutes to introduce who’s going to be speaking and what they’ll cover. A brief explanation first: we’ve personally recruited the speakers, which is why it has been a slow process to finalize and get abstracts on the [...]
Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
I am constantly referring to the amazing MySQL manual, especially the option and variable reference table. But just as frequently, I want to look up blog posts on variables, or look for content in the Percona documentation or forums. So I present to you what is now my newest Firefox toolbar bookmark: an option and [...]
Seeking volunteers for Percona documentation
April 29, 2010 By 5 Comments
Percona wants to upgrade our documentation to improve its readability and to make it more useful for you, our clients and partners. We are so busy developing software and handling your needs that we have trouble finishing all the documentation! We think you can help. Helping us will give you a chance to interact closely [...]
READ-COMMITED vs REPETABLE-READ in tpcc-like load
February 11, 2010 By 6 Comments
Question what is better isolation level is poping up again and again. Recently it was discussed in InnoDB : Any real performance improvement when using READ COMMITED isolation level ? and in Repeatable read versus read committed for InnoDB . Serge in his post explains why READ COMMITED is better for TPCC load, so why [...]
InnoDB/XtraDB Training in New York City!
September 25, 2009 By 2 Comments
Our Santa Clara/San Francisco training went great – 100% of survey respondents said they would recommend the same course to a friend. I’m pleased to announce that such an opportunity exists – our next training location will be New York City on October 30, 2009. We’ve booked a training venue in the financial district of [...]
xtrabackup-0.8
July 1, 2009 By 8 Comments
Dear community, The release 0.8 of the opensource backup tool for InnoDB and XtraDB is available for download. Key features: New mode of innobackupex –stream=tar4ibd; new command tar4ibd based on libtar-1.2.11 Experimental option –export is added (see Vadim’s post “Impossible – possible, moving InnoDB tables between servers”for details) tar4ibd is made to be sure that [...]
