Subject: Re: RAW access to files
To: None <>
From: Thor Lancelot Simon <>
List: tech-kern
Date: 12/13/2001 10:22:27
On Thu, Dec 13, 2001 at 04:20:16PM +0100, Wojciech Puchar wrote:
> > > userspace (NO MEMCPY)
> >
> > Yes.  But it also means no readahead, because there's nowhere to _put_
> > the readahead.  (Unless the application provides such a place, which we
> with modern disk (which does readahead in hardware) or/and large blocks
> it's no difference.

Oh, yeah, silly me, I forgot!  The SCSI bus is *at least* as fast as the
memory bus, and has *much* less command latency.