IOzone
IOzone is an open source disk benchmark tool for testing file systems and hard drives. It measures performance for operations like read, write, re-read, re-write, backward read, and random seeks.
disk
benchmark
filesystem
performance
IOzone: Open Source Disk Benchmark Tool
IOzone measures performance for file system and hard drive testing operations like read, write, re-read, re-write, backward read, and random seeks.
What is IOzone?
IOzone is an open source disk benchmark tool for testing file systems and hard drives. It is used to measure performance characteristics of storage devices like hard disks, solid state drives, SAN volumes, NAS filers etc.
Some key features of IOzone include:
- Measures performance for operations like read, write, re-read, re-write, backward read, random read/write, strided read/write etc.
- Supports multiple threads to measure multi-user performance.
- Ports available for many operating systems like Linux, Windows, Solaris, AIX etc.
- Command line parameters available for customizing tests runs and output.
- Outputs detailed performance metrics like MB/sec, IOPS, latency, CPU utilization etc.
- Can test performance with various record sizes and file sizes.
- Distributed testing mode available for running IOzone across multiple clients against a central server/filer.
IOzone generates both standard output and CSV files containing the comprehensive test results. The metrics provided by IOzone helps analyze performance bottlenecks in storage systems and compare different hardware/software configurations. It is a useful open source tool for storage performance benchmarking and simulation.
IOzone Features
Features
- Measures file system performance for operations like read, write, re-read, re-write, backward read, random seeks
- Supports multiple threads for concurrent measurement
- Portable across platforms - runs on Linux, Solaris, Windows, MacOS, etc
- Supports testing various file operations like sequential, random, strided, asynchronous I/O, mmap I/O
- Can generate different file workloads like sequential, random mixes, hotspot, streaming data
- Reports comprehensive metrics like IOPS, throughput, response times, CPU usage
Pricing
- Open Source
Pros
Free and open source
Portable across OS platforms
Highly customizable tests and workloads
Detailed performance reporting
Active development and user community support
Cons
Setup and configuration requires some technical expertise
Limited built-in visualization and analysis of results
Not optimized for testing solid state drives or NVMe storage
No native distributed or cluster testing support
Official Links
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