Percona

DECEMBER 20, 2023

Kubectl helps to check the amount of huge pages available. kubectl describe nodes NODENAME … hugepages-1Gi 0 (0%) 0 (0%) hugepages-2Mi 1Gi (25%) 1Gi (25%) … The tool reports only 2MB pages availability in the above output. PG pods are not able to start without proper limits on the node with huge pages enabled.

C++ 95

C++ Virtualization Benchmarking Database 95

Percona

AUGUST 29, 2023

Data redundancy, a database version of a RAID Pondering the case of high availability and redundancy, one replicates data by creating a replica via streaming replication. Now let’s stretch our imagination and consider a second method of high availability, ala Citus. Much of what I will show you makes heavy use of them.

C++ 77

C++ Database Storage Testing 77

Percona

DECEMBER 5, 2022

ProxySQL is a very useful tool for gaining high availability, load balancing, query routing, query caching, query rewriting, multiplexing, and data masking. Your MySQL connection id is 1 Server version: 5.5.30 (ProxySQL Admin Module) Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Commands end with ; or g.

Servers 58

Servers Cache C++ Metrics 58

Brendan Gregg

AUGUST 18, 2019

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. This example instrumented one of many thousands of available events. Hit Ctrl-C to end.

Latency 68

Latency C++ Cache Programming 68

SQL Server According to Bob

JANUARY 11, 2020

​​ Various defragmentation ​​ utilities ​​ are ​​ available ​​ on the market today. Therefore, the database can have pages in any one of the three available verification states.

Servers 40

Servers Cache Database Media 40