70/30 Mixed Workload Test (Sledgehammer)
Version and / or Patch Used: Iometer 2014
Heavy Workload Model
This test hammers a drive so hard we've dubbed it "Sledgehammer". Our 70/30 Mixed Workload test is designed to simulate a heavy-duty enthusiast/workstation steady-state environment. We feel that a mix of 70% read/30% write, full random 4K transfers best represents this type of user environment. Our test allows us to see the drive enter into and reach a steady state as the test progresses.
Phase one of the test preconditions the drive for 1 hour with 128K sequential writes. Phase two of the test runs a 70% read/30% write, full random 4K transfer workload on the drive for 1 hour. We log and chart (phase two) IOPS data at 5-second intervals for 1 hour (720 data points). 60 data points = 5 minutes.
What we like about this test is that it reflects reality. Everything lines up, as it should. Consumer drives don't outperform Enterprise-Class SSDs that were designed for enterprise workloads. Consumer drives based on old technology are not outperforming modern Performance-Class SSDs, etc.
This is a brutal test, and smaller capacity drives are impacted much more than larger capacity SSDs. This is because smaller capacity SSDs are written over more times than large capacity SSDs in the same one hour time period.
This is part of the reason the 250GB 960 EVO gets hammered into the last place. The other reason why the 250GB 960 EVO is bringing up the rear is because its native write performance (write performance outside of the TurboWrite layer) is so much lower than the 1TB model. In this case, the 1TB 960 EVO easily outperforms the 950 Pro.
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- Page 1 [Introduction, Drive Specifications, Pricing and Availability]
- Page 2 [Drive Details]
- Page 3 [Test System Setup, & Drive Properties]
- Page 4 [Synthetic Benchmarks - ATTO & Anvil Storage Utilities]
- Page 5 [Synthetic Benchmarks - CrystalDiskMark & AS SSD]
- Page 6 [Benchmarks (OS) - PCMark Vantage, PCMark 7 & PCMark 8]
- Page 7 [Benchmarks (Secondary) - IOPS, Response & Transfer Rate]
- Page 8 [Benchmarks (Secondary Volume) - PCMark 8 Extended]
- Page 9 [Benchmarks (Secondary Volume) - 70/30 Mixed Workload]
- Page 10 [Maxed-Out Performance (MOP)]
- Page 11 [Final Thoughts]
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