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Phison E18 slow writes certain file sizes on Atto

mechtech

mechtech

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Just wondering if this is a FW issue or an atto issue or other?? It carries through my KC3000 1TB & 2TB and Corsair 4TB drives.

atto 4.01.0f1 SKC3000S1024GEIFK31.6 oct28 2024.jpg


atto 4.01.0f1 SKC3000S1024GEIFK31.7 oct29 2024.jpg

SKC3000S1024GEIFK31.6 oct29 2024 fresh trim atto 4.00.0f2.jpg

Corsair_MP600_PRO_LPXEIFM31.6 atto 4.00.0f2 sept 29 2024.jpg


Just curious is anyone else gets those anomalies with phison E18 drives?? @W1zzard
 
W1zzard

W1zzard

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I'm not using ATTO in my testing, any chance your SLC cache is full at that time?
 
mechtech

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W1zzard said:
I'm not using ATTO in my testing, any chance your SLC cache is full at that time?
Click to expand...
Hmmmm

not sure. Tested on a fresh start up and after I did a trim on the drive.
 
W1zzard

W1zzard

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How much free disk space?
 
mechtech

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W1zzard said:
How much free disk space?
Click to expand...
90% free

edit - just wondering if anyone else can test if they have an nvme with a Phison E18 controller??
1730327219097.png
 
Last edited:
K

K²mix

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Looks more like something is affecting the Atto benchmark?
I don't see any abnormalities with mine. Performance comparable to new condition. No KC3000 but Phison E18 +112 layer BICS5.

Exceria Pro.jpg
 
mechtech

mechtech

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K²mix said:
Looks more like something is affecting the Atto benchmark?
I don't see any abnormalities with mine. Performance comparable to new condition. No KC3000 but Phison E18 +112 layer BICS5.

View attachment 369589
Click to expand...
Thanks

MS nvme driver? (that's what I'm using, and amd chipset driver)
 
H

Harlow

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I've just run ATTO on my KINGSTON SKC3000S1024G and the results are almost the same as those in K2mix's chart, but reads are a bit faster at 8.65MB/s.

I have see inconsistent results with some drives in ATTO, but have put it down to cache hits or controller latency at some test file sizes and stopped worrying about it.
 
egg_addict

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It seems that drives with a Phison E18 controller have issues with write speed degradation over time. I believe Kingston has a firmware update that fixes the issue, not sure what other manufacturers have an updated firmware that fixes the issue. If you've had these drives for a while, that's probably why.
 
massaker

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egg_addict said:
It seems that drives with a Phison E18 controller have issues with write speed degradation over time
Click to expand...
You mean READ speed degradation... Yes, it has.
egg_addict said:
I believe Kingston has a firmware update that fixes the issue, not sure what other manufacturers have an updated firmware that fixes the issue.
Click to expand...
Have already read (some user experiences) it didn't really helped much.
egg_addict said:
If you've had
Click to expand...
It would not affect benchmarks with fresh written data...
 
Space Lynx

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Harlow said:
I've just run ATTO on my KINGSTON SKC3000S1024G and the results are almost the same as those in K2mix's chart, but reads are a bit faster at 8.65MB/s.

I have see inconsistent results with some drives in ATTO, but have put it down to cache hits or controller latency at some test file sizes and stopped worrying about it.
Click to expand...

there is a firmware update for kingston kc3000, i was actually looking at updating mine earlier today

august 2024 is the release date for the firmware

www.kingston.com

KSM Firmware Update - Kingston Technology

KSM Firmware Update | Kingston
www.kingston.com www.kingston.com
 
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