10 March 2015, 23:07 | #1 |
Registered User
Join Date: Feb 2015
Location: moscov/russia
Posts: 44
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Terrible usb drive performance?
Hi
I created a folder drive on a usb thumb drive(usb3.0 and usb3.0 plug). I am trying to copy about 500mb to it and man it is taking forever. It copied about 200mb over 3 hours. Is this expected? I am on Debian 64bit using dev builds and I am using A1200 emulation with wB3.1. |
10 March 2015, 23:12 | #2 | |
PSPUAE DEV
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Quote:
I know on amiga formatted drives and OS4.1 USB devices, this makes a big difference. |
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10 March 2015, 23:14 | #3 |
Registered User
Join Date: Feb 2015
Location: moscov/russia
Posts: 44
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FOL
How do I do that? |
10 March 2015, 23:22 | #4 |
PSPUAE DEV
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in CLI, type addbuffers yourdevice yourvalue
example addbuffers DH0: 2000 This will allocate 2MB to DH0: Not sure it will work on a folder as they are limited if I recall to around 50. To remove buffers use this; addbuffers DH0: -2000 Before I found out about buffers, I remember leaving my computer on all night just to copy 4GB. |
10 March 2015, 23:32 | #5 |
Registered User
Join Date: Feb 2015
Location: moscov/russia
Posts: 44
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FOL thanks it says the folder hd as 50 buffer value ;(
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11 March 2015, 09:06 | #6 |
WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 49
Posts: 26,588
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Directory harddrive buffer is not real buffer value, it only exists to keep amigados and programs that query it or change it happy, it does nothing. (Why would it need when host OS does all file level buffering/caching automatically?)
Most likely reason is wrong ("too accurate"/slow) UAE configuration. EDIT: Direct block level access (not directory) is totally different thing. |
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