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DiskSpd Microsoft Corporation
Use this command to install DiskSpd:
winget install --id=Microsoft.DiskSpd -e DISKSPD is a storage load generator / performance test tool from the Windows/Windows Server and Cloud Server Infrastructure Engineering teams.
DiskSpd is a storage performance testing tool designed to evaluate the performance of storage systems under various workloads. It provides detailed metrics on IOPS, latency, throughput, and CPU utilization, enabling users to assess storage performance accurately.
Key Features:
- Support for sequential, random, and mixed workload patterns.
- Detailed statistics including IOPS, latency distributions, and throughput.
- XML profile generation for consistent test configurations.
- Processor topology reporting for NUMA-aware testing.
- Integration with ETW (Event Tracing for Windows) for deeper performance analysis.
Audience & Benefit: Ideal for system administrators, storage engineers, and IT professionals tasked with optimizing storage performance in data center or cloud environments. DiskSpd helps ensure that storage solutions meet performance expectations under real-world conditions.
The tool can be installed via winget, making it easy to integrate into existing workflows.
README
DiskSpd
DiskSpd is a storage performance tool from the Windows, Windows Server and Cloud Server Infrastructure engineering teams at Microsoft. Please visit for updated documentation.
In addition to the tool itself, this repository hosts measurement frameworks which utilize DiskSpd. The initial example is VM Fleet, used for Windows Server Hyper-Converged environments with Storage Spaces Direct.
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.
Releases
The Releases page includes pre-compiled binaries (ZIP) and source code for the most current releases of the DiskSpd tool. The latest update to DiskSpd can always be downloaded from (aka ).
What's New?
DISKSPD
DISKSPD 2.2 6/3/2024
NOTE: changes to the asynchronous IO loop will require rebaselining results with queue depths greater than 1.
The new design drains the completion queue more aggressively, shrinking delays that impacted latency measurement
especially on faster storage targeting higher queue depths. Latency measurement is improved at a very small cost
to rates, as well as improving rates when latency measurement is not used (-D or -L) due to batch dequeue.
Smaller IO sizes will see the most change.
- New: Socket, NUMA, Core and Power Efficiency Class (big/little cores) added to processor topology reporting (XML and text output)
- topology elements only displayed in text results when > 1 are present (e.g. multi-socket systems)
- CPU numbering remains group relative, as is the new Core numbering
- highest Power Efficiency Class is marked with a
Psuffix (this will usually be1Pv.0) - NOTE: efficiency classes can have major impact; work on heterogenous systems must be aware of core properties in combination with thread affinity rules (see
-aand-n)
- New: active power scheme reporting
- New: base target offset switch now allows range specification:
-Bbase[:length]; replaces-Band