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10 Newer Entries Showing entries 121 to 130 of 835 10 Older Entries

Displaying posts with tag: innodb (reset)

Presenting MySQL/InnoDB at Percona Live 2014
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I will be presenting at Percona Live 2014 and I’m excited to share and discuss the latest and greatest features and improvements that we have made to MySQL/InnoDB in 5.7. Great performance improvements, there are some new exciting compression features that we are working on,  GIS support,  temporary table performance etc.. There is a long list. Also, we are always interested to hear about user issues and priorities so that we can address them and/or work them into our plan. Your feedback is very important for us, if you want to influence the direction of InnoDB development then you need to talk to me .

MariaDB 10.0.9 now available
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The MariaDB project is pleased to announce the immediate availability of MariaDB 10.0.9. This is a Release Candidate release.

Among other changes, XtraDB is now the default InnoDB implementation, Oracle’s InnoDB is included as a plugin and can be dynamically loaded if desired. Packages for Ubuntu 14.04 “trusty” and Debian “Sid” have also been added to the MariaDB Ubuntu and Debian repositories.

See the …

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Engineer duo from Google, LinkedIn join again for InnoDB talks
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Google senior systems engineer Jeremy Cole is once again teaming with LinkedIn senior software engineer Davi Arnaut for two InnoDB-focused sessions at the upcoming Percona Live MySQL Conference and Expo 2014 this April 1-4 in Santa Clara, California.

The duo will present “InnoDB: A journey to the core II” on April 2 and “ …

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Optimizing InnoDB Transactions
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(This is a cross-post from the Engine Yard blog. The original article appears here.)

Here is a question I've actually been asked a few times:

"I am writing a batch processing script which modifies data as part of an ongoing process that is scheduled by cron. I have the ability to group a number of modifications together into a transaction, but I'm not sure what the correct number is?"

First off, I think that this question is interesting not just in the context of batch processing, but it equally applies to all parts of the application. …

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Fun with Bugs #30 - quick review of my reports in February, 2014
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I've got only one comment to my previous post about deadlock, and it was more like a hint based on a different use case, not a real explanation. So far there is nobody who wants to get free beer... Maybe this is even good, as I do not go to the conference and BOF I've submitted will be supervised by my colleague Przemysław Malkowski. But you still have entire month till the conference …

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The MySQL ARCHIVE storage engine – Alternatives
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In my previous post I pointed out that the existing ARCHIVE storage engine in MySQL may not be the one that will satisfy your needs when it comes to effectively storing large and/or old data. But are there any good alternatives? As the primary purpose of this engine is to store rarely accessed data in disk space efficient way, I will focus here on data compression abilities rather then on performance.

The InnoDB engine provides compressed row format, but is it’s efficiency even close to the one from …

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Magic deadlock: what locks are really set by InnoDB?
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Megabytes of text had been written already on InnoDB locking and deadlocks. Still, even very simple cases of deadlocks while working with a table having only one row sometimes make people wonder what happened and why.

Today I want to check if this topic is explained well in the manual and existing blog posts and understood properly. So, it's an exercise for my dear readers and those who like to report bugs as much as I do.

Let's consider a very simple example. In session #1 with default transaction isolation level execute the following:
CREATE TABLE `tt` (
  `id` int(11) NOT NULL,
  …






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Abdel-Mawla Gharieb: Online DDL vs pt-online-schema-change
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One of the most expensive database operations is performing Data Definition Language (DDL, e.g. CREATE, DROP, ALTER, etc.) statements, specially, the ALTER statements because MySQL blocks the entire table for both reads and writes while modifying the table.

For the huge tables, this might take hours to get the table changed which affects the application, so that, a good planning is required for such operations in order to avoid doing these changes during the peak times. For those people who have 24/7 services or limited maintenance window, DDL on huge tables is a really nightmare.

Percona developed a very good tool called …

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Introducing Trite: A tool for automating import of InnoDB tablespaces
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Mysqldump is a fantastic tool for backing up and restoring small and medium sized MySQL tables and databases quickly. However, when databases surge into the multi-terabyte range restoring from logical backups is inefficient. It can take a significant amount of time to insert a hundred million plus rows to a single table, even with very fast I/O. Programs like MySQL Enterprise Backup and Percona XtraBackup allow non-blocking binary copies of your InnoDB tables to be taken while it is online and processing requests. …

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Migration of MTR suites to use InnoDB (continued …)
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This is a continuation of my post on migration-of-mtr-suites-to-use-innodb . To set the context here is a quick recap.

MySQL 5.5 had the following changes with respect to the default engine

  • Default engine in the server changed from MyISAM to InnoDB
  • MTR modified to start server with the old default MyISAM. (This was required because historically most test results were recorded with MyISAM and many of them would fail if tests were run with the new server default,  InnoDB)
  • Tests retained as is in 5.5 and planned …
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10 Newer Entries Showing entries 121 to 130 of 835 10 Older Entries

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