article thumbnail

Tune Linux Kernel Parameters For PostgreSQL Optimization

Percona

For optimum performance, a PostgreSQL database depends on the operating system parameters being defined correctly. Poorly configured OS kernel parameters can cause degradation in database server performance. Therefore, it is imperative that these parameters are configured according to the database server and its workload.

Tuning 54
article thumbnail

Data Redundancy With the PostgreSQL Citus Extension

Percona

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. Depending on the configuration, one can tune a hardware RAID for either performance or redundancy. Extension citus has been created in database db01.

C++ 77
article thumbnail

SQL Server I/O Basics Chapter #2

SQL Server According to Bob

KB sectors run on smaller sectors   14 System and sample databases   15 Determining the formatted sector size of database   15 What sector sizes does SQL Server support? SQL Server 2005 introduces the snapshot database feature for point-in-time databases ​​ and online DBCC operations.

Servers 40