The main focus of a previous blog post was the performance of MyRocks when using fast SSD devices. However, I figured that MyRocks would be beneficial for use in cloud workloads, where storage is either slow or expensive.
In that earlier post, we demonstrated the benefits of MyRocks, especially for heavy IO workloads. Meanwhile, Mark wrote in […]
Recently, Dimitri published the results of measuring MySQL 8.0 on Intel Optane storage device. In this blog post, I wanted to look at this in more detail and explore the performance of MySQL 8, MySQL 5.7 and Percona Server for MySQL using a similar set up. The Intel Optane is a very capable device, so […]
Read more
Since MySQL 5.7.5, we have been able to resize dynamically the InnoDB Buffer Pool. This new feature also introduced a new variable — innodb_buffer_pool_chunk_size — which defines the chunk size by which the buffer pool is enlarged or reduced. This variable is not dynamic and if it is incorrectly configured, could lead to undesired […]
Read more
If you attended my latest Troubleshooting MySQL Concurrency Issues with Load Testing Tools webinar you learned how I exploit benchmarking tools to replicate locking issues and crashes. But I told you nothing about proper use of these tools: for reliable benchmarks. I did not tell you that for a reason… I am just a […]
Read more
In this blog, I will provide answers to the Q & A for the Troubleshooting MySQL Concurrency Issues with Load Testing Tools webinar.
First, I want to thank everybody for attending my May 23, 2018, webinar on troubleshooting tools for MySQL. The recording and slides for the webinar are available here. Below is the list […]
In this blog, I provide answers to the Q & A for the Troubleshooting hardware resource usage webinar.
First, I want to thank everybody who attended the May 26 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, […]
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:
Shell
sysbench –test=/usr/share/doc/sysbench/tests/db/parallel_prepare.lua –oltp-auto-inc=off –mysql-engine-trx=yes –mysql-table-engine=innodb –oltp_table_size=1000000 […]
Read more
In this blog, I will provide answers to the Webinar Q & A for Introduction to Troubleshooting Performance: What Affects Query Execution?
First, I want to thank you for attending the April, 7 webinar. This webinar is the third in the “MySQL Troubleshooting” webinar series and last introductory webinar in the series. The recording and […]
I have recently seen several cases when performance for MySQL queries on a single table was terrible. The reason was simple: the wrong indexes were added and so the execution plan was poor. Here are guidelines to help you optimize various kinds of single-table queries.
Disclaimer: I will be presenting general guidelines and I do […]
In Mo’ Data, Mo’ Problems, we explored the paradox that “Big Data” projects pose to organizations and how Tokutek is taking an innovative approach to solving those problems. In this post, we’re going to talk about another hot topic in IT, “The Cloud,” and how enterprises undertaking Cloud efforts often struggle with idea of […]
Read more
