Mixed Random Performance

Our test of mixed random reads and writes covers mixes varying from pure reads to pure writes at 10% increments. Each mix is tested for up to 1 minute or 32GB of data transferred. The test is conducted with a queue depth of 4, and is limited to a 64GB span of the drive. In between each mix, the drive is given idle time of up to one minute so that the overall duty cycle is 50%.

Mixed 4kB Random Read/Write

The Optane SSDs put even Samsung's best NVMe SSDs to shame on the mixed random I/O test. The 800p is a little more than half as fast as the 900p, which is plenty to put it far out of reach of the flash-based SSDs.

Mixed 4kB Random Read/Write (Power Efficiency)

The Optane SSD 800p takes first place for power efficiency on the mixed random I/O test, with the 58GB model having a slight advantage over the 118GB due to the lower power consumption of operating half as many 3D XPoint dies. The flash-based SSDs come close to matching the efficiency of the Optane SSD 900p, but are far behind the 800p.

With no write buffering, the Optane SSDs show a steady decline in performance as the proportion of writes increases, with no spike in performance at the end as is typical of flash-based SSDs with aggressive write combining. The 800p shows a more pronounced reduction in performance than the 900p, while the 900p's power consumption climbs more.

Mixed Sequential Performance

Our test of mixed sequential reads and writes differs from the mixed random I/O test by performing 128kB sequential accesses rather than 4kB accesses at random locations, and the sequential test is conducted at queue depth 1. The range of mixes tested is the same, and the timing and limits on data transfers are also the same as above.

Mixed 128kB Sequential Read/Write

With only a PCIe x2 interface and sequential write speeds that only use a fraction of that bandwidth, the Optane SSD 800p is actually performing pretty well on the mixed sequential I/O test. The 800p has the same average performance as Samsung's fastest TLC SSD, and offers more than two thirds the performance of the Samsung 960 PRO.

Mixed 128kB Sequential Read/Write (Power Efficiency)

The power efficiency of the Intel Optane SSD 800p is second only to that of the Samsung 960 PRO. The 800p's efficiency score is far above the 900p and the low-end NVMe SSDs.

As with the mixed random I/O test, the Intel Optane SSD 800p shows a steady decline inn performance as more writes are added to the mix. The decline is steeper than the one shown by the 900p. Power consumption increases very slightly over the course of the test but still stays within the rated maximum.

Sequential Performance Power Management
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  • patrickjp93 - Saturday, March 10, 2018 - link

    Until you start running databases, multi-tenant VM environments, and large swap files for map-reduce, inference drawing, etc.. Reply
  • xenol - Monday, March 12, 2018 - link

    Yeah, let me know when the average consumer uses that. Reply
  • keralataxi - Monday, March 26, 2018 - link

    thank you for sharing this.This site is really helpful to me and i think you have to collect more details about the topic.
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    Reply
  • JohnBooty - Monday, March 26, 2018 - link

    Rrrrrrright. So, yes, a human wouldn't perceive... the latency improvement seen on a single IOP on Octane vs. an alternative.

    Bravo. That's about as insightful as pointing out that a human also wouldn't notice the difference in latency between a single operation on a 3ghz CPU vs. a 4ghz CPU. Because microseconds, amiirite?

    Just for your reference: this is 2018. Unless we're traveling back to 1985 and benchmarking the floppy drive on a Commodore 64, we usually measure the performance or modern by looking at the aggregate performance of thousands or even millions of operations.
    Reply
  • Ewitte12 - Monday, April 30, 2018 - link

    When something is loading it is rarely doing 1 task. Hundreds or thousands of tasks will definitely be noticeable. You would be surprised how much goes on just loading an app... Reply
  • MrSpadge - Friday, March 9, 2018 - link

    No, I can't remember anyone saying that. It was supposed to be an intermediate step between high NAND and DRAM. Reply
  • ATC9001 - Friday, March 9, 2018 - link

    It very well may cost less than NAND, but no business in the world is going to sell a product that's faster for less than another one of it's products (unless it simple doesn't sell, which is surely not that case for NAND).

    I'm pretty excited overall...sure it's hyped up a lot, but remember the first SSDs? Took a while to figure out the controllers and such.

    It's great to see the low latency...with DRAM prices the way they are *MAYBE* some enterprise customers will look to optane.

    As a gamer, I'm more concerned with sequential performance and higher capacities, but for prosumers with high random workloads this might make sense.
    Reply
  • sharath.naik - Sunday, March 11, 2018 - link

    More importantly wan't xpoint supposed to have endurance many times over an SLC nand?. The spec here is not much better than an MLC let alone SLC Reply
  • chrnochime - Thursday, March 8, 2018 - link

    And FWIW, I value endurance(write cycle) far more than speed. So if it's as fast as SLC I'm okay with that. Reply
  • iter - Thursday, March 8, 2018 - link

    Performance means the actual media performance, that includes P/E latency and endurance. slc has great endurance, that I myself would be more than willing to pay for, alas there is no such an option as no slc products have been made the last few years. Reply

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