Tag

fio

0 views collected around this technical thread.

Ops Development Stories
Ops Development Stories
Aug 24, 2023 · Operations

Master Linux Disk I/O: Key Metrics, Tools, and Real-World Troubleshooting

This article explains Linux disk I/O performance metrics, benchmark methods, observation tools like iostat, pidstat, and iotop, and walks through a practical case of diagnosing and resolving an I/O spike caused by the jbd2 journaling process.

Disk I/OPerformance Monitoringfio
0 likes · 14 min read
Master Linux Disk I/O: Key Metrics, Tools, and Real-World Troubleshooting
Ops Development Stories
Ops Development Stories
Aug 23, 2022 · Operations

How to Benchmark Ceph Cluster Performance: A Step‑by‑Step Guide

This guide explains how to benchmark a Ceph storage cluster before production by measuring hardware baselines, disk read/write performance, network throughput, and using Ceph's built‑in tools like rados bench, load‑gen, rbd bench‑write, and fio for comprehensive performance testing.

Block DeviceCephRADOS
0 likes · 10 min read
How to Benchmark Ceph Cluster Performance: A Step‑by‑Step Guide
Ops Development Stories
Ops Development Stories
Jun 21, 2021 · Fundamentals

Understanding Linux I/O: Types, Schedulers, and Performance Testing with FIO

This article explains the various classifications of Linux I/O—including buffered, direct, synchronous, and asynchronous types—describes the kernel’s block layer and I/O scheduler algorithms, and provides practical guidance for measuring disk performance using the FIO tool with example commands and scripts.

Schedulingdisk-performancefio
0 likes · 11 min read
Understanding Linux I/O: Types, Schedulers, and Performance Testing with FIO
Refining Core Development Skills
Refining Core Development Skills
Jul 2, 2020 · Fundamentals

Performance Comparison of SSD and HDD in Server RAID Configurations Using fio

This article details a systematic fio benchmark comparing sequential and random I/O performance of RAID‑5 servers equipped with SSDs versus HDDs, revealing that while sequential throughput is similar, SSDs deliver dozens‑fold higher bandwidth and dramatically lower latency for random reads.

HDDIO performanceRAID
0 likes · 6 min read
Performance Comparison of SSD and HDD in Server RAID Configurations Using fio
Refining Core Development Skills
Refining Core Development Skills
Jun 13, 2020 · Fundamentals

Sequential vs Random I/O Performance on a 7‑Disk RAID5 Array: Benchmarks and Insights

This article presents a detailed fio benchmark comparing sequential and random I/O on a 7‑disk RAID5 array, revealing how I/O size, RAID strip size, and caching affect bandwidth, latency, and IOPS, and explains the implications for database transactions, file copying, and B+‑tree indexing.

B-TreeDatabaseDisk I/O
0 likes · 10 min read
Sequential vs Random I/O Performance on a 7‑Disk RAID5 Array: Benchmarks and Insights
Efficient Ops
Efficient Ops
May 18, 2020 · Operations

Why Do Files Disappear After a Cloud VM Restart? Common Pitfalls and Fixes

This article outlines five typical cloud‑host file‑loss scenarios—including tmpfs data loss after reboot, accidental rm commands, and disk damage from fio or dd—explains their causes, and provides practical prevention and recovery recommendations for operations engineers.

cloudddfile loss
0 likes · 10 min read
Why Do Files Disappear After a Cloud VM Restart? Common Pitfalls and Fixes
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Apr 27, 2017 · Fundamentals

How to Process SSD Benchmark Logs and Analyze Performance Data

This article explains how to evaluate SSD performance by processing raw fio benchmark logs, interpreting bandwidth, IOPS, and latency metrics, converting logs to CSV, visualizing results with charts, and drawing practical conclusions for storage selection and reliability.

IOPSSSDbenchmark
0 likes · 11 min read
How to Process SSD Benchmark Logs and Analyze Performance Data
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Apr 26, 2017 · Fundamentals

How to Build a Reliable SSD Benchmark: Environment, Tools, and Test Scripts

This article explains how to evaluate SSD performance by detailing the benchmark environment, required hardware, preferred testing tools like fio, essential disk requirements, common pitfalls, and a comprehensive set of test items and scripts for both raw disks and typical filesystems.

IO testingSSDbenchmark
0 likes · 13 min read
How to Build a Reliable SSD Benchmark: Environment, Tools, and Test Scripts