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Old 23 December 2002, 05:49   #1
Dan Andrea
 
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Slow speed Direct HD access

I asked about this in a different forum and never got an answer. :-/

Anyway, I was wondering if there is something in my system doing this or if it is just WinUAE that is the problem. I have my "old" Amiga's HD connected and working as a direct accessed HD in WinUAE (RDB prepped and all). Only problem is it is really slow. I get about 1 MB/s write speeds and 3 MB/s read speeds (and this is if I tell Windows to enable the Write Cache on the drive!). This drive I have measured 12 MB/s read and 10 MB/s writes, sustained, on both my old real Amiga (now dead) and on this PC before I reformatted it back to Amiga RDB prepped (I had it as a FAT32 drive for a while).

Do I need to do something to get this to go faster? Is this a bug in 0.8.22r3? I'm getting ready to install r4, so I don't know yet if this will fix my issue or not (no mention of it in the notes on winuae.net).

Any ideas? :-)
 
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Old 23 December 2002, 05:56   #2
Dan Andrea
 
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OK, just tried r4, and no change. Any ideas anyone?
 
Old 23 December 2002, 08:55   #3
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 19,682
Ok, I thought it was my old test hard drive that was slow

I think WinUAE needs cache that merges multiple small reads to single big read (because Windows does not use any software disk caches when directly accessing harddisk blocks)
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Old 27 December 2002, 14:21   #4
Toni Wilen
WinUAE developer
 
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Location: Hämeenlinna/Finland
Age: 42
Posts: 19,682
Dan, contact me privately.
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