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840 Evo Random Write IOPS way down

M

melk

[H]ard|Gawd
Joined
Jan 21, 2014
Messages
1,074
Samsung 840 EVO 120GB ~2 years old (3TB written)
RAPID mode off. 10% OP. Latest firmware.
16GB RAM, Win 7 Pro

I've been getting weird hiccups (1-2 seconds stalls/lags in mouse interaction) and before I wipe and reinstall the OS (always fun
rolleyes.gif
) I thought I'd checkout Samsung's Drive Magician.

Looks like over the past year something has caused the Random Write IOPS to drop off a cliff. I have no idea if there is any correlation to the laggy UI I am experiencing but thought it was worth investigating anyway, as it's dropped from ~32,000 to ~7800.

What's even funnier is that after running the 'Performance Optimization' all numbers across the board dropped (slightly).
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Found out Windows had set the pagefile to 16GB (matching installed RAM) on C:

Disabled the pagefile and immediately everything is fast and snappy.

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Interesting find. I had been experiencing the same thing recently with my mSATA 500gb 840 Evo. I had set the page file to off, but after seeing your post I went and checked and she enough it was set to on and windows managed size.

I turned it off but won't be able to really test til late tonight. I'll edit my post if my lag is gone.
 
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