Forum Thread

SSD writes slowing down

repitall 2,153 543 December 17, 2015 at 02:05 PM
Samsung 830 3 yrs old. Writes are slowing down. Set for maximum performance, with 10 % Over Provisioning. Don't know what is usual. Any thoughts?

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#2
Is Trim/garbage collection running?
Does it have the latest firmware?
How much free space does it have?
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Vague questions receive vague answers . . . . . .
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#3
Quote from LiquidRetro View Post :
Is Trim/garbage collection running? YES
Does it have the latest firmware? YES
How much free space does it have? 24 GB
11.9 GB OP

Also noticed that I can no longer set or change the OP. See last screenshot.
Thanks
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Last edited by repitall December 17, 2015 at 03:37 PM
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#4
maybe the firmware is the problem? they make it less active to garbage collect? they want you to buy new ssd? downgrade firmware or new ssd?

maybe no one knows, but i hope user can choose passive or very active GC
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#5
Quote from repitall View Post :
11.9 GB OP

Also noticed that I can no longer set or change the OP. See last screenshot.
Thanks
Why do you have that 11.9gb partition thats unused?
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#6
Quote from LiquidRetro View Post :
Why do you have that 11.9gb partition thats unused?
Thats the Over Provisioning partition that Samsung Magician set when I first set it up.
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#7
Has the drive been filling up, or has usage been pretty stable? Samsung drives from that era are known for starting to slow down at about 75% full, which is about where you are.

Otherwise, I think the drive may just be getting old. With age, the drive had to map around more and more dead spots, which can be a performance hit.

Anything interesting in the smart status?
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Last edited by quotidian December 18, 2015 at 09:06 AM
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#8
Quote from quotidian View Post :
Has the drive been filling up, or has usage been pretty stable? Samsung drives from that era are known for starting to slow down at about 75% full, which is about where you are.

Otherwise, I think the drive may just be getting old. With age, the drive had to map around more and more dead spots, which can be a performance hit.

Anything interesting in the smart status?
Usage is pretty stable. Maybe your right about age, but I didn't think a little over 3 yrs was old for an SSD.

The thing thats weird is that the options on the OP page to clear and set it are not available and I have that RAW file warning ( see screenshot ). Maybe its the Magician software newer version. I may try to find an older version.
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#9
Wonder if this drive suffers from the EVO bug???
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Quote from brbubba View Post :
Wonder if this drive suffers from the EVO bug???
I thought the same, Thats the 840 though.
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#11
Quote from brbubba View Post :
Wonder if this drive suffers from the EVO bug???
Are you talking about the bug when the drive would start to read much slower? I think that was on the 840 EVO.

OP - did you recently have the drive to a nearly filled state and then delete some data? That could explain it. Also: I remember reading that Anandtech found that generally write performance increases significantly when you get 25% or more free space on a consumer SSD. Can you try moving some data off the drive?
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Last edited by Ero December 21, 2015 at 10:12 AM
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#12
Quote from LiquidRetro View Post :
I thought the same, Thats the 840 though.
Quote from Ero View Post :
Are you talking about the bug when the drive would start to read much slower? I think that was on the 840 EVO.

OP - did you recently have the drive to a nearly filled state and then delete some data? That could explain it. Also: I remember reading that Anandtech found that generally write performance increases significantly when you get 25% or more free space on a consumer SSD. Can you try moving some data off the drive?
I know it was on the later 840 series, but if all else fails it may be worth a try to rewrite the data and see if the problem persists. If this was the 850 series I would assume that Samsung nipped the bug in the butt, but previous releases could have had God knows what lurking.
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Last edited by brbubba December 21, 2015 at 10:19 AM
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#13
Quote from Ero View Post :
OP - did you recently have the drive to a nearly filled state and then delete some data? That could explain it. Also: I remember reading that Anandtech found that generally write performance increases significantly when you get 25% or more free space on a consumer SSD. Can you try moving some data off the drive?
Nope, the drive has pretty much stayed with the same amount written to it. Hard to get some more free space without uninstalling some programs I use. All data is on a spinner.

Thanks for the responses guys.
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#14
if you don't write much at a time, maybe "no" problem?

because benchmark write "too" much? if benchmark write 10GB, firmware only keep 5GB clean, then the test result will slow.
try use FastCopy, RoboCopy or any tool shows speed that isn't included cache speed like windows does, should be more accurate if only wirte 2GB from RAMdisk
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#15
Well I just removed as much as I can and pick up about 20-30 more in write speed. So, the 75% rule must the issue. I am now at 70%.

EDIT: Now at 66% full and right back to about 240 on write speed. Must be something else.
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Last edited by repitall December 21, 2015 at 12:37 PM
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