ClickHouse Performance Tuning Archives | ChistaDATA Inc.

Troubleshooting ClickHouse high CPU usage with the sampling profiler, system.trace_log stacks and flamegraphs

Troubleshooting High CPU Usage in ClickHouse: From system.trace_log to Flamegraphs

ChistaDATA Inc.

Diagnose ClickHouse high CPU usage with the sampling profiler, system.trace_log stacks, and flamegraphs, plus the five hotspots we see most often.

ClickHouse

Using EXPLAIN PIPELINE to Decode ClickHouse Query Execution Bottlenecks

ChistaDATA Inc.

Learn to read ClickHouse EXPLAIN PIPELINE processor graphs, spot single-threaded stages and pipeline stalls, and fix production bottlenecks.

ClickHouse slow query troubleshooting: diagnosing query latency with system.query_log, a ChistaDATA production methodology

Diagnosing Slow ClickHouse Queries with system.query_log: A Production Methodology

ChistaDATA Inc.

Master ClickHouse slow query troubleshooting with a production-proven system.query_log methodology to find, classify, and fix query latency fast.

ClickHouse Performance Audit

How to Run a Complete ClickHouse Performance Audit in Under 60 Minutes

ChistaDATA Inc.

ClickHouse performance audit is the fastest way to uncover hidden bottlenecks, misconfigured settings, and query inefficiencies draining your analytical database. Whether you are running ClickHouse on bare metal, Kubernetes, or as a managed cloud service, […]

Scaling ClickHouse

Scaling ClickHouse from Gigabytes to Petabytes: A Practical Playbook

ChistaDATA Inc.

Most teams don’t run into ClickHouse scaling challenges when they’re managing a few hundred gigabytes. The problems surface the moment data volumes cross a threshold where naive configurations begin to crack — queries slow down, […]

ClickHouse Query Optimization

ClickHouse Query Optimization: 8 Indexing Strategies That Actually Work

ChistaDATA Inc.

The ClickHouse indexing strategies that actually move query latency — sorting key, sparse primary index, data-skipping indexes, projections and materialized views — with runnable SQL. Need it faster now? ChistaDATA delivers expert ClickHouse performance tuning, consulting and 24×7 support.

* 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.

Copyright 2022 ChistaDATA Inc

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

PostgreSQL is a registered trademark of the PostgreSQL Community Association. ClickHouse is a registered trademark of ClickHouse, Inc. MongoDB is a registered trademark of MongoDB, Inc. Couchbase is a registered trademark of Couchbase, Inc. Redis is a registered trademark of Redis Ltd. Apache Cassandra is a registered trademark of the Apache Software Foundation. Milvus is a registered trademark of Zilliz. MinIO is a registered trademark of MinIO, Inc. Amazon Redshift and Amazon Aurora are registered trademarks of [Amazon.com](http://amazon.com/), Inc. Google Cloud is a registered trademark of Google LLC. Snowflake is a registered trademark of Snowflake Inc. Databricks is a registered trademark of Databricks, Inc. MySQL and InnoDB are registered trademarks of Oracle Corporation. MariaDB is a trademark of MariaDB Corporation Ab. All other trademarks are the property of their respective owners. Any other product or company names mentioned may be trademarks or trade names of their respective owners. Copyright © 2010–2026. All Rights Reserved by ChistaDATA®.