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Mod Edit: Samsung SSD Optimization Utility for Surface Pro 3 now available.
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SP3 SSD, possible firmware bug, same as just fixed in another Samsung drive.
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Anonymous
I've just had to update the firmware in another device that had a Samsung 840EVO SSD because they had a serious firmware bug with it. Out of curiosity I tested the Samsung drive in my Surface Pro 3 and it looks like it has exactly the same issue (the SP3 drive is closely related to the 840 series I believe, but an OEM version.
The test is simple, just look at the read rate across the drive. Older data (OS, installed apps) suffered from terrible read performance after a month or so. Newly written data is fine.
As you can see, much of the drive is down to 50MB/s now. It should be a fairly level line right the way across at about 350+MB/s. This test was run with AC power connected and nothing else running.
If this is the same issue as the 840EVO, the good news is it can be corrected with a firmware update and refresh of the data. Bad news would of course be Microsoft need to look into it first, then get the Samsung engineers looking into it.
Perhaps some other people could run the test too, and post results. Remember the drive needs to be a month or more old, so that the data can have been sitting there only being read during that time.
Further details of the bug and the fix that Samsung released can be found here:
Surface | Surface Pro | Install and update
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Anonymous
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Anonymous
2014-11-08T13:25:29+00:00 What TRIM are you talking about?
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Anonymous
2014-11-08T10:51:09+00:00 Just posting to confirm the exact same thing. 512gb Surface Pro 3 purchased in September 2014, mainly showing slow read speeds around where (I presume) the operating system and preinstalled programs were located. Doing a disk refresh dramatically changed drive performance.
Before:
After:
Strangely enough it actually dropped the overall average read speed in those flat areas, and created this zig-zag pattern. Hopefully we get a firmware fix within the next few months.
EDIT: I just realised that I forgot to run a TRIM after I did the refresh, here's what it looks like post TRIM:
Which is much better. I guess instead of actually reading the data from the free space it's just returning zeros immediately now. The zig-zag might be some sort of buffering side effect.
EDIT2:
Ran it one last time with the largest block size (8mb) and got an even better result.
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Anonymous
2014-11-05T17:43:41+00:00 Got my SP3 in early July:
Great; thanks!
It is definitely looking to me that we have proof here of a serious issue. The only decent performance graph anybody has posted was for an SP3 that has a Hynix SSD instead of Samsung.
It would be good to know if the Surface engineering team are actually looking into this. I can see that it might take a while to sort out an update (like the one Samsung already have for the retail version of this drive) but still it would be nice to know that one is on the way.
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Anonymous
2014-11-05T15:22:15+00:00 Got my SP3 in early July: