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Re: Hard disk is too slow on NetBSD-5.0.1/x86_64

To: Steve Woodford <scw%NetBSD.org@localhost>
Subject: Re: Hard disk is too slow on NetBSD-5.0.1/x86_64
From: Aleksey Cheusov <vle%gmx.net@localhost>
Date: Tue, 12 Jan 2010 20:05:04 +0200

 >> On freshly installed NetBSD-5.0.1/x86_64 300Gb hard disk works too
 >> slowly.
 >>
 >>    dd if=/dev/wd0d of=/dev/null bs=1024k count=100
 >>
 >> command says that data read speed is ~5Mb/s.

> Try again with /dev/rwd0d instead of /dev/wd0d.

> Steve

With ACPI enabled in BIOS and patched kernel:
wd0d:  23Mb/s
rwd0d: 66Mb/s

Why?

-- 
Best regards, Aleksey Cheusov.

Follow-Ups:
- Re: Hard disk is too slow on NetBSD-5.0.1/x86_64
  - From: Paul Goyette
- Re: Hard disk is too slow on NetBSD-5.0.1/x86_64
  - From: Steve Woodford

References:
- Hard disk is too slow on NetBSD-5.0.1/x86_64
  - From: Aleksey Cheusov
- Re: Hard disk is too slow on NetBSD-5.0.1/x86_64
  - From: Steve Woodford

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