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Windows 10: service host superfetch - high disk usage

MyName13
By MyName13
in Windows
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1 hour ago, MyName13 said:

Why does this service max out my HDD?

it's trying to be clever, superfetch is kinda like drive caching, the service will basically try and copy all your most commonly used files into RAM for faster access the next time you need it. It's all well and good if you have a modern machine with SSD's and shit, but windows 10 doesnt really care about stomping older hardware. 

 

The reason it puts your HDD to 100% is because of the amount of IOPS, windows isnt necessarily maxing out the actual transfer speeds of the drive, but it is maxing out its ability to respond to input/output requests. Windows search indexing does the same thing.

Home PC:

CPU: i7 4790s ~ Motherboard: Asus B85M-E ~ RAM: 32GB Ballistix Sport DDR3 1666 ~ GPU: Sapphire R9 390 Nitro ~ Case: Corsair Carbide Spec-03 ~ Storage: Kingston Predator 240GB   PCIE M.2 Boot, 2TB HDD, 3x 480GB SATA SSD's in RAID 0 ~ PSU:    Corsair CX600
Display(s): Asus PB287Q , Generic Samsung 1080p 22" ~ Cooling: Arctic T3 Air Cooler, All case fans replaced with Noctua NF-B9 Redux's ~ Keyboard: Logitech G810 Orion ~ Mouse: Cheap Microsoft Wired (i like it) ~ Sound: Radial Pro USB DAC into 250w Powered Speakers ~ Operating System: Windows 10 Enterprise x64
 

Work PC:

CPU: Intel Xeon E3 1275 v3 ~ Motherboard: Asrock E3C226D2I ~ RAM: 16GB DDR3 ~ GPU: GTX 460 ~ Case: Silverstone SG05 ~ Storage: 512GB SATA SSD ~ Displays: 3x1080p 24" mix and matched Dell monitors plus a 10" 1080p lilliput monitor above ~ Operating System: Windows 10 Enterprise x64

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20 minutes ago, DnFx91 said:

it's trying to be clever, superfetch is kinda like drive caching, the service will basically try and copy all your most commonly used files into RAM for faster access the next time you need it. It's all well and good if you have a modern machine with SSD's and shit, but windows 10 doesnt really care about stomping older hardware. 

 

The reason it puts your HDD to 100% is because of the amount of IOPS, windows isnt necessarily maxing out the actual transfer speeds of the drive, but it is maxing out its ability to respond to input/output requests. Windows search indexing does the same thing.

Would it be safe to disable it?

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1 minute ago, MyName13 said:

Would it be safe to disable it?

yeah totally safe, superfetch makes a system faster, if the system is already fast enough to run superfetch, kinda a catch 22, if your PC is struggling with superfetch, just disable it and it should free up your drive for stuff you actually want it to do, you just wont have any fancy caching going on. 

Home PC:

CPU: i7 4790s ~ Motherboard: Asus B85M-E ~ RAM: 32GB Ballistix Sport DDR3 1666 ~ GPU: Sapphire R9 390 Nitro ~ Case: Corsair Carbide Spec-03 ~ Storage: Kingston Predator 240GB   PCIE M.2 Boot, 2TB HDD, 3x 480GB SATA SSD's in RAID 0 ~ PSU:    Corsair CX600
Display(s): Asus PB287Q , Generic Samsung 1080p 22" ~ Cooling: Arctic T3 Air Cooler, All case fans replaced with Noctua NF-B9 Redux's ~ Keyboard: Logitech G810 Orion ~ Mouse: Cheap Microsoft Wired (i like it) ~ Sound: Radial Pro USB DAC into 250w Powered Speakers ~ Operating System: Windows 10 Enterprise x64
 

Work PC:

CPU: Intel Xeon E3 1275 v3 ~ Motherboard: Asrock E3C226D2I ~ RAM: 16GB DDR3 ~ GPU: GTX 460 ~ Case: Silverstone SG05 ~ Storage: 512GB SATA SSD ~ Displays: 3x1080p 24" mix and matched Dell monitors plus a 10" 1080p lilliput monitor above ~ Operating System: Windows 10 Enterprise x64

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