SQL Server According to Bob

DECEMBER 18, 2018

Durability is a cornerstone of any database system and starting with SQL Server 2017 on Linux Cumulative Update 6 (CU6), SQL Server on Linux enables “Forced Flush” behavior as described in this article , improving durability on non-Fua optimized systems. “Be Linux may need similar utilities to control various hardware cache installations.

Servers 90

Servers Media Cache Storage 90

Brendan Gregg

SEPTEMBER 5, 2017

Linux has been adding tracing technologies over the years: kprobes (kernel dynamic tracing), uprobes (user-level dynamic tracing), tracepoints (static tracing), and perf_events (profiling and hardware counters). There's a lot about Linux containers that isn't well documented yet, especially since it's a moving target.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

SEPTEMBER 25, 2021

Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. But I'm not completely sure.

Speed 126

Speed Java AWS Virtualization 126

Percona

SEPTEMBER 1, 2023

This blog was originally published in October 2017 and was updated in September 2023. In this blog post, we will talk about MongoDB sharding and walk through the main reasons why you should start a cluster (independent of the approach you have chosen). 2) Hardware limitations Disk and memory are inexpensive nowadays.

Best Practices 73

Best Practices Traffic Database Servers 73

Percona

AUGUST 15, 2023

This blog was originally published in February 2017 and was updated in August 2023. Failover ensures that if the primary MySQL server becomes unavailable due to hardware failure or another issue, the system seamlessly switches to a standby replica.

Servers 52

Servers Database Availability Traffic 52

Percona

JULY 7, 2023

This blog highlights considerations for keeping your own PostgreSQL databases highly available and healthy. Also, in general terms, a high availability PostgreSQL solution must cover four key areas: Infrastructure: This is the physical or virtual hardware database systems rely on to run. Failover is essential to minimizing downtime.

Availability 85

Availability Open Source Architecture Database 85

Brendan Gregg

SEPTEMBER 25, 2021

Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. But I'm not completely sure.

Speed 40

Speed Java AWS Virtualization 40