Linux Archives | ChistaDATA Inc.

How to Avoid the Linux OOM Killer in ClickHouse

Introduction: Linux OOM killer In numerous instances, this indicates an out-of-memory scenario. ClickHouse started utilizing excessive memory, prompting Linux to terminate it to avert system instability. The responsible Linux process for this action is the […]

ClickHouse and Linux Swap: Diagnosing Swap-Induced Latency and Configuring Hosts to Avoid It

Shiv Iyer

ClickHouse assumes it is running on hosts where RAM operations stay RAM operations. When the kernel starts swapping ClickHouse pages to disk, p99 latency degrades by orders of magnitude before any ClickHouse-level metric looks alarming […]

ClickHouse Monitoring: How to add ClickHouse to Percona Monitoring & Management

ChistaDATA Inc.

Introduction: How to add ClickHouse to Percona Monitoring & Management Percona Monitoring and Management (PMM) is a powerful tool that simplifies database monitoring, providing valuable insights into the performance of your database servers. If you’re […]

ClickHouse Performance: Disabling Transparent Huge Pages (THP) in Linux

Shiv Iyer

Introduction Transparent Huge Pages (THP) is a memory management feature in the Linux kernel that allows the operating system to manage memory pages more efficiently. It works by grouping smaller memory pages into larger pages, […]

Tuning Linux for ClickHouse Performance

Shiv Iyer

Introduction Tuning the Linux kernel can significantly improve the performance of ClickHouse, a popular open-source columnar database management system. Here are some of the Linux kernel parameters that can be tuned to optimize ClickHouse performance: […]

ClickHouse Monitoring: Python Script to Monitor Linux Disk I/O Matrix

Shiv Iyer

Introduction Optimizing and monitoring the performance of your Linux kernel is absolutely key to achieving the highest performance from your ClickHouse cluster. In this article we explore how to use a simple python script to […]

ClickHouse Monitoring: Python Script to Monitor Linux Process Memory Matrix

Shiv Iyer

* Everything changes over time – Our blogs/posts and comments changes over time, That’s how it should be! Whatever we comment from ChistaDATA Inc. Teams (including Shiv Iyer) and other stakeholders or guest bloggers posted here are never permanent, These things worked for us. But, there is no guarantee they will work for you too, When using the recommendations from ChistaDATA or MinervaDB or MinervaSQL or any other online resources / Google, You must test the advice before applying them to your production systems, and always invest for a robust Database DR solution, Thank you for understanding.

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