Yujun Zhang, ZTE Corporation, Mark Beierl, Dell EMC StorPerf uses heat to create VMs with attached cinder volumes. The volumes are used *without* a file system (ie target=/dev/vdb). The FIO workload is run and stats collected every minute. When we get 10 samples in a row that fit within a certain range and slope, we say it is a valid measurement. This avoids false numbers due to Ceph balancing or other warm up. The metrics can be read after job completes, and there is an indicator to state if the volume metrics stabilized or not. Storage QPI will be calculated based on the test results from storperf by QTIP. It aims to be a comparable indicator for storage performance among different platforms.

2. Storage Performance
Indicators
Powered by StorPerf and QTIP

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4. QTIP: True Indicator of Performance
• Transparent - open specification for the indicator composition
• Reliable - traceability to underlying metrics and raw test data
• Understandable - comprehensive description and references
• Extensible - free to fork and customize, or define new one by yourself

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sudo dd if=/dev/zero of=/dev/sdb bs=16384 count=65536
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.471334 s, 2.3 GB/s
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sudo dd if=/dev/urandom of=/dev/null bs=16384 count=65536
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 80.2468 s, 13.4 MB/s

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• WRITE: io=1024.0MB, aggrb=1728KB/s
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• WRITE: io=1024.0MB, aggrb=2006KB/s
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• WRITE: io=1024.0MB, aggrb=2049KB/s

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