![]() ![]() fix operation on volumes on GPT partitioned media (:). ![]() Updated calculation and accuracy of CPU statistics.Updated CPU statistics to work on > 64-core systems.Added support for validating XML profiles using an in-built XSD.Enhanced statistics captured from IOPS data.XML: Adds a new element to support target weighting schemes.New -Zr option for per-IO randomization of write buffer content.New -O option for specifying the number of outstanding IO requests per thread.Switched to 512-byte aligned buffers with the -Z option to increase performance.New random number generator that may show an observable decreased cost.Changes that may require rebaselining of results:.Added system information to the ResultParser output.Included a Windows Performance Recorder (WPR) profile to enable ETW tracing.Added support for providing Event Tracing for Windows (ETW) events.New -N option to specify flush options for memory mapped I/O.New -Sm option to enable memory mapped I/O.the command line now allows options alongside -X: -v, -z, -R and -W/-d/-C along with template target specs.XML profiles can be stated in terms of templated target names (*1, *2), replaced in order from command line invocation.XML profiles can now be built more generically.thread stride no longer shown unless specified.now shows values in size units (K/M/G, and now TiB) to two decimals.XML results/profiles are now indented for ease of review.New -Rp to show specified parameter set in indicated profile output form works with -X XML profiles and conventional command line.New -rd to specify non-uniform IO distributions across target.New -rs to specify mixed random/sequential operation (pct random) geometric distribution of run lengths.New -gi form allowing throughput limit specification in units of IOPS (per specified blocksize).The latest update to DiskSpd can always be downloaded from (aka ). The Releases page includes pre-compiled binaries (ZIP) and source code for the most current releases of the DiskSpd tool. For more information see the Code of Conduct FAQ or contact with any additional questions or comments. This project has adopted the Microsoft Open Source Code of Conduct. The initial example is VM Fleet, used for Windows Server Hyper-Converged environments with Storage Spaces Direct. In addition to the tool itself, this repository hosts measurement frameworks which utilize DiskSpd. DiskSpd is a storage performance tool from the Windows, Windows Server and Cloud Server Infrastructure engineering teams at Microsoft. ![]()
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