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Showing entries 1 to 10 of 17839 10 Older Entries

Displaying posts with tag: mysql (reset)

Speaking in June 2016
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I have a few upcoming speaking engagements in June 2016:

  • Nerdear.la – June 9-10 2016 – Buenos Aires, Argentina – never been to this event but MariaDB Corporation are sponsors and I’m quite excited to be back in Buenos Aires. I’m going to talk about the MySQL ecosystem in 2016.
  • SouthEast LinuxFest – June 10-12 2016 – Charlotte, NC, USA – I have a few talks here, a bit bummed that I’m going to be missing the speaker dinner, but I expect this to be another great year. Learn about …
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systemd: a revolution gets used to itself
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New versions of systemd (like in Ubuntu 16.04) are able to configure pid Cgroups (ulimit -u via Cgroups) using TasksMax.

Check the commit implementing TaksMax.

Author: Lennart Poettering <lennart@poettering.net>
Date:   Fri Nov 13 19:28:32 2015 +0100

    core: enable TasksMax= for all services by default, and set it to 512

    Also, enable TasksAccounting= for all services by default, too.

    See:

    http://lists.freedesktop.org/archives/systemd-devel/2015-November/035006.html

But not we’ve got silly defaults:

$ systemctl show -p TasksMax docker
TasksMax=512

$ …
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Linux User-Group Console
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This post shows you how to add the menu option and GUI to set users and groups. It’s quite a bit easier than mastering all the command-line syntax. It makes setting up the required user and group accounts for an Oracle Enterprise or MySQL database solution much easier.

You add the utility by calling the yum (Yellowdog Updater, Modified) utility like this:

yum installed -y system-config_users

You should see the following:

Loaded plugins: langpacks
adobe-linux-x86_64                                       |  951 B     00:00     
ol7_UEKR3 …
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Infiniflash Benchmark
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Sandisk (FusionIO) and Nexenta are working together to build this SDS solution.

Infiniflash is a very large SDS production, which manages for very large DW system who requires large storage space and also high IOPS.

We test infiniflash system ,read this Infiniflash_benchmark

Galera Error Failed to Report Last Committed (Interrupted System Call)
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In this blog, we’ll discuss the ramifications of the Galera Error Failed to Report Last Committed (Interrupted System Call).

I have recently seen this error with Percona XtraDB Cluster (or Galera):

[Warning] WSREP: Failed to report last committed 549684236, -4 (Interrupted system call)

It was posted in launchpad as a bug in 2013: https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1434646

My colleague Przemek replied, and explained it as:

Reporting the last …

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Asynchronous Query Execution with MySQL 5.7 X Plugin
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In this blog, we will discuss MySQL 5.7 asynchronous query execution using the X Plugin.

Overview

MySQL 5.7 supports X Plugin / X Protocol, which allows (if the library supports it) asynchronous query execution. In 2014, I published a blog on how to increase a slow query performance with the parallel query execution. There, I created a prototype in the bash shell. Here, I’ve tried a similar idea with NodeJS + mysqlx library (which uses …

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Understanding MySQL Fabric Faulty Server Detection
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Awhile ago I found myself analyzing a MySQL fabric installation to understand why a group member was occasionally being marked as FAULTY even when the server was up and running and no failures were observed.  

         
                         server_uuid     address  status       mode weight
------------------------------------ ----------- ------- ---------- ------
ab0b0653-6121-11c5-55a0-007543445454 mysql1:3306 PRIMARY READ_WRITE    1.0
f34dd331-2432-11f4-a2d3-006754678533 mysql2:3306 FAULTY  READ_ONLY     1.0

 

Upon reviewing mysqlfabric logs, I found the following warnings were being logged from time to time: …

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AWS Aurora Benchmarking part 2
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Some time ago, I published the article on AWS Aurora Benchmarking (AWS Aurora Benchmarking – Blast or Splash?), in which I analyzed the behavior of different solutions using synchronous replication in AWS environment. This blog follows up with some of the comments and suggestions I received regarding that post from the community and Amazon engineers.

I decided to perform another round of tests, keeping in mind comments and suggestions received.

I presented some of the results during the Percona conference …

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Log Buffer #475: A Carnival of the Vanities for DBAs
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This Log Buffer Edition goes through various blogs, and selects some of the top posts from Oracle, SQL Server and MySQL.

Oracle:

MOS Note:136697.1 – New HCHECK.SQL for Oracle Database 12c

ORAchk / EXAchk questions.

Cloud control won’t start!

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Percona Server 5.6.30-76.3 is now available
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Percona
is glad to announce the release of Percona Server 5.6.30-76.3 on May 25, 2016. Download the latest version from the Percona web site or the Percona Software Repositories.


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Showing entries 1 to 10 of 17839 10 Older Entries

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