SNIA’s Solid State Storage Initiative has just released a revised Client SSS Performance Test Specification (PTS-Client) which adds a new write saturation test and refines existing tests.
The Solid State Storage Performance Test Specification (PTS) is a device-level performance test suite for benchmarking and comparing performance among SAS, SATA and PCI Express SSDs
Revision 1.1 of the PTS-Client updates tests for IOPS, throughput and latency to more accurately reflect the workload conditions under which Client SSDs are used. The PTS-Client v1.1 also adds a Write Saturation test that measures the initial Fresh-Out-of-Box state of SSDs and their performance evolution as data is randomly written to the device.
Eden Kim, Chair of SNIA’s SSS Technical Working Group, describes the primary updates to PTS-Client v1.1 as adjustments to preconditioning ranges and test boundaries. Taken together, these parameters create a repeatable test stimulus that more accurately reflects the workload characteristics of SSDs used in a single user environment The PTS-Client v1.1 also adds an easily understandable description of each test, which helps the user to understand the purpose of the test, the test flow, and guidance on how to interpret the test results.
Sample test results using the PTS-Client v1.1 have been posted to the SNIA SSSI Understanding PTS Performance webpage.