Performance – Page 2

How to change innodb_read_io_threads in MySQL

I will give an example of changing innodb_read_io_threads in MySQL.
The innodb_read_io_threads value determines the number of I/O threads for read operations in InnoDB. The default is 4, the minimum possible is 1, the maximum is 64.

How to change innodb_write_io_threads in MySQL

The innodb_write_io_threads value determines the number of I/O threads for writing to InnoDB. The default is 4, the minimum possible is 1, the maximum is 64.

How to change innodb_thread_concurrency in MySQL

I will give an example of changing innodb_thread_concurrency in MySQL.
Since InnoDB uses operating system threads to process user transactions, the innodb_thread_concurrency parameter allows you to limit them. By default in new MySQL versions the value is 0, which means that there is no limit on the number of simultaneously executed threads and this is correct for modern servers. If you want to limit, then when the limit is reached, the extra threads will wait a certain number of microseconds specified in the innodb_thread_sleep_delay parameter, and then try to get into the queue. Also in MySQL 5.6.3 and higher, the innodb_adaptive_max_sleep_delay parameter was added which allows you to specify the maximum number of microseconds for the innodb_thread_sleep_delay parameter and then InnoDB automatically adjusts innodb_thread_sleep_delay.

Performance Tuning Guidelines for Mellanox Network Adapters

Title: Performance Tuning Guidelines for Mellanox Network Adapters
Format: PDF
Revision: 1.17
Size: 901 KB
Language: English

Creating a RAMdisk on Ubuntu

In this article I will give an example of creating a disk in RAM.

Using BNG Blaster

BNG Blaster is a testing tool, it can create thousands of virtual PPPoE and IPoE clients to test the performance of access servers, it also supports IGMP, QinQ, IPv6, etc.

File mirroring script

Once I needed to make several mirrors in different countries for files that were often downloaded by users, so I made two scripts for synchronization.

Configuring RPS (Receive Packet Steering)

Receive Packet Steering (RPS) is a software implementation of RSS. Useful for example when there are fewer interrupts on the network interface than the processor cores.

LACP Link Aggregation on Cisco Nexus 3064

I will give an example of configuring LAG (LACP) on a Cisco Nexus 3064.

Moving the MySQL data directory to a new location

In this article I will describe the process of moving the MySQL data directory to a separate location, namely on a level 10 raid with 4 disks, this will increase performance.