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Comment Test results and more results (Score 1) 282

I have been awaiting some non-intel results on the X25-M drives for a while. Intel has been very good at putting marketting spin on this drive. While it is a good drive, it is nice to finally see some real numbers.

There appear to be two sites that have posted IOMeter results. I like IOMeter numbers because they don't try to hide the details and are easy to reporduce. Just for fun, I ran IOMeter File-Server, Workstation, and Database tests on an in-house MLC SSD to see how it compared. My results are here compared with the two sites X25-M numbers.

File Server:

Numbers are "Outstanding IOs", MFT IOPS, Intel X25-M @ pcper.com, and Intel X25-M @techreport.com.

        1 - 2652.64 / 3000 / 850
        2 - 2724.80 / 3700 / 1010
        4 - 2224.81 / 4000 / 990
        8 - 2472.40 / 4800 / 1040
      16 - 2754.18 / 5200 / 1060
      32 - 2783.93 / 5800 / 1055

Workstation:

Numbers are "Outstanding IOs", MFT IOPS, Intel X25-M @ pcper.com, and Intel X25-M @techreport.com.

        1 - 3346.12 / 850 / 850
        2 - 3582.49 / 860 / 1000
        4 - 3637.09 / 910 / 990
        8 - 3657.64 / 900 / 1030
      16 - 3692.25 / 890 / 1060
      32 - 3716.06 / 900 / 1050

Database:

Numbers are "Outstanding IOs", MFT IOPS, Intel X25-M @ pcper.com, and Intel X25-M @techreport.com.

        1 - 3705.97 / 1800 / 980
        2 - 3947.26 / 1950 / 600
        4 - 3948.28 / 1100 / 600
        8 - 3838.48 / 975 / 600
      16 - 3800.85 / 925 / 610
      32 - 3930.27 / 800 / 620

Someday I will learn how to post tables on /.

A couple of points here. First, my numbers from the sites are from their graphs, so I might be off by a few percent.

Second, it looks like pcper.com's numbers for File-Server are messed up. They are too high at larger queue sizes. File-Server numbers should not be better than workstation numbers.

Regardless, these tests show two things. First, the Intel drive is a very good drive when comparing it with other "non managed" drives. Flash storage is a strange thing that really benefits from software that is designed for flash storage. That is what MFT (Managed Flash Technology) is. MFT is basically a transparent layer under the filesystem that re-ordered reads and writes so that Flash "is happy". Flash file systems do much the same things, although less aggressively than MFT.

Also, from what I can tell from Intel market-hype, their drive should last about 10x longer than other MLC drives for typical random-write workloads. This 80GB drive is designed for 20GB/day of random writes for a 5 year life. With MFT, a 64GB MLC drive can do about 100GB/day for a 7 year life so the software solution is still better.

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