Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 10 of 102 10 Older Entries

Displaying posts with tag: MySQL 5.7 (reset)

Severe performance regression in MySQL 5.7 crash recovery
+0 Vote Up -0Vote Down

In this post, we’ll discuss some insight I’ve gained regarding severe performance regression in MySQL 5.7 crash recovery.

Working on different InnoDB log file sizes in my previous post:

What is a big innodb_log_file_size?

I tried to understand how we can make InnoDB crash recovery faster, but found a rather surprising 5.7 crash recovery regression.

Basically, crash recovery in MySQL 5.7 is two times slower, due to this issue:  …

  [Read more...]
MySQL 5.7 By Default 1/3rd Slower Than 5.6 When Using Binary Logs
+0 Vote Up -0Vote Down

Researching a performance issue, we came to a startling discovery:

MySQL 5.7 + binlogs is by default 37-45% slower than MySQL 5.6 + binlogs when otherwise using the default MySQL settings

Test server MySQL versions used:
i7, 8 threads, SSD, Centos 7.2.1511
mysql-5.6.30-linux-glibc2.5-x86_64
mysql-5.7.12-linux-glibc2.5-x86_64

mysqld –options:

--no-defaults --log-bin=mysql-bin --server-id=2

Run details:
Sysbench version 0.5, 4 threads, socket file connection

Sysbench Prepare: 






  [Read more...]
Percona XtraBackup 2.4.3 is now available
+0 Vote Up -0Vote Down


Percona
is glad to announce the GA release of Percona XtraBackup 2.4.3 on May 23rd, 2016. Downloads are available from our download site and from apt and yum repositories.


  [Read more...]
Major post-GA features in the 5.7 release!
+0 Vote Up -0Vote Down

Interesting developments in the MySQL world – it can now be used as a document store and you can query the database using JavaScript instead of SQL (via the MySQL Shell). There is also a new X Plugin (see: mysql-5.7.12/rapid/) (which now makes use of protocol buffers (see: mysql-5.7.12/extra/protobuf/)). I will agree, this is …

  [Read more...]
MySQL Parallel Replication and more Booking.com talks at Percona Live
+0 Vote Up -0Vote Down

In a few days, I will be flying to San Francisco and then making my way to Santa Clara to attend the Percona Live Conference.  On the last day of the conference (Thursday), I will speak about MySQL Parallel Replication.  I hope to see you there and I will he happy to answer questions you might have (on this subject and others):

Thursday at 12:50 pm: MySQL Parallel Replication: inventory,

Percona Server 5.7 performance improvements
+0 Vote Up -0Vote Down

In this blog post, we’ll be discussing Percona Server 5.7 performance improvements.

Starting from the Percona Server 5.6 release, we’ve introduced several significant changes that help address performance problems for highly-concurrent I/O-bound workloads. Some of our research and improvements were re-implemented for MySQL 5.7 – one of the best MySQL releases. But even though MySQL 5.7 showed progress in various aspects of scalability and performance, we’ve found that it’s …

  [Read more...]
Percona Server 5.7.11-4 is now available
+2 Vote Up -0Vote Down

Percona is glad to announce the GA release of Percona Server 5.7.11-4 on March 15, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on …

  [Read more...]
Amazon RDS updates February 2016
+0 Vote Up -0Vote Down

I think one of the big announcements that came out from the Amazon Web Services world in October 2015 was the fact that you could spin up instances of MariaDB Server on it. You would get MariaDB Server 10.0.17. As of this writing, you are still getting that (the MySQL shipping then was 5.6.23, and today you can create a 5.6.27 instance, but there were no .24/.25/.26 releases). I’m hoping that there’s active work going on to make MariaDB Server 10.1 available ASAP on the platform.

Just last week you would …

  [Read more...]
SYS Schema: Simplified Access To SSL/TLS Details
+1 Vote Up -0Vote Down

A while back, I wrote a blog post explaining how PERFORMANCE_SCHEMA improvements in MySQL Server 5.7 provides new visibility into the SSL/TLS status of each running client configuration.  An excellent recent post from Frederic Descamps at Percona covers similar territory.  Both of us use PERFORMANCE_SCHEMA tables directly – a powerful interface, but one that requires a query …

  [Read more...]
mysql_real_connect is not thread safe
+2 Vote Up -0Vote Down

The "mysql_real_connect" function is used by MySQL clients, including multi-threaded clients,  to connect to a MySQL server.  The "mysql_real_connect" function is allowed to be run by concurrent threads without application level serialization.  Unfortunately, the  …

  [Read more...]
Showing entries 1 to 10 of 102 10 Older Entries

Planet MySQL © 1995, 2016, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.