sysbench
pev2
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sysbench | pev2 | |
---|---|---|
4 | 40 | |
5,789 | 2,363 | |
- | 3.4% | |
2.4 | 7.7 | |
about 1 month ago | 9 days ago | |
C | TypeScript | |
GNU General Public License v3.0 only | PostgreSQL License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
sysbench
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RDS MySQL Load Testing with Sysbench
Sometimes you need to do a load test on MySQL Database to test Auto-Scaling for example. I found a very useful tool called Sysbench that I will present in this article.
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Tracking down high CPU Utilization on Amazon Aurora PostgreSQL
QPM is available on Amazon Aurora PostgreSQL version 10.5-compatible (Aurora 2.1.0) and later and can be enabled in production (minimal overhead) and or enabled/disabled against your test working-sets with tools such as sysbench. I highly recommend turning this on under your test environments and also practice plan evolution (reviewing and approving plans) before applying QPM in production. Once applied to production a periodic review will be necessary to see if the optimizer has found better plans with a lower cost estimate that needs to be approved.
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Get Started with Amazon RDS on Graviton2 for better price performance
git clone https://github.com/akopytov/sysbench.git cd sysbench sudo ./autogen.sh sudo ./configure sudo make sudo make install
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My computer keeps freezing after a while. How can I troubleshoot what's the cause?
Benchmark tools like sysbench can be used to identify temperatur issues since they put some reproducible load on your machine https://github.com/akopytov/sysbench
pev2
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Retrieving the latest row per group from PostgreSQL
This runs in about 250ms. Let's have a look at the explain plan to understand it better. To visualise it, I am using the excellent visualisation tool from Dalibo.
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Pg_hint_plan: Force PostgreSQL to execute query plans how you want
The PEV2 is open source and give you a good visualization. I never used this pgmustard to compare.
https://explain.dalibo.com/
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Efficient Database Queries in Rails: A Practical Approach
Visualize Your Plan: Visit explain.dalibo.com and paste the generated plan text and query. Then, hit Submit. The tool will generate a visualization of your query plan. Here's an example of the visualization for the fifth attempt version of the query from this post. It shows the different types of scans that were used and how the data gets combined. The duration of each operation is also shown:
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What's new in the Postgres 16 query planner (a.k.a. optimizer)
You can download the whole analyzer as a simple html file and use it this way. No need to obfuscate or sanitize anything at all.
https://github.com/dalibo/pev2
- Visualizing and understanding PostgreSQL EXPLAIN plans made easy
- Don't use DISTINCT as a "join-fixer"
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When should you use the IN instead of the OR operator in Postgres queries?
You might be interested in sites like https://explain.dalibo.com/ which make the output a bit nicer to read. I use these quite often to quickly identify bottlenecks.
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200 Web-Based, Must-Try Web Design and Development Tools
PostgreSQL Query Plan Analyzer and Visualizer
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Do you use pgAdmin? Why?
I didn’t know about pev2, interesting, checking it now. Did you integrate the component yourself or are you using this hosted page by them: https://explain.dalibo.com/?
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Tuning DB
IMO it‘s important to get started with indexing. Grab your most frequently used queries and run an EXPLAIN ANALYZE to identify the problems. This tool might help you to understand your execution plans. Once you identified your problems, you can build indexes and check again. Then you should regularly check if your indexes are used.
What are some alternatives?
aws-graviton-getting-started - Helping developers to use AWS Graviton2 and Graviton3 processors which power the 6th and 7th generation of Amazon EC2 instances (C6g[d], M6g[d], R6g[d], T4g, X2gd, C6gn, I4g, Im4gn, Is4gen, G5g, C7g[d][n], M7g[d], R7g[d]).
TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
wireguard-freebsd - Mirror only. Official repository is at https://git.zx2c4.com/wireguard-freebsd
awesome-db-tools - Everything that makes working with databases easier
luvi - A project in-between luv and luvit.
hypopg - Hypothetical Indexes for PostgreSQL
sysbench-tpcc - Sysbench scripts to generate a tpcc-like workload for MySQL and PostgreSQL
pev - Postgres Explain Visualizer
zheap - ⚡️ Development status and progress reporting.
yugabyte-db - YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
LuaConsole - A next-gen, Cross-Platform [Lua-5.1.x, LuaJIT-2.0, Lua-5.2.x, Lua-5.3.x, Lua-5.4.x]-supporting CLI made to supersede PUC-Lua and LuaJIT CLI
octosql - OctoSQL is a query tool that allows you to join, analyse and transform data from multiple databases and file formats using SQL.