[2766] in linux-scsi channel archive
Re: Line of even in SCSI
daemon@ATHENA.MIT.EDU (Marc SCHAEFER)
Thu Nov 6 14:19:04 1997
From: Marc SCHAEFER <schaefer@alphanet.ch>
Date: 6 Nov 1997 19:57:31 +0100
Apparently-To: linux-scsi@vger.rutgers.edu
To: ;@unlisted-recipients (no To-header on input)
Marc SCHAEFER <schaefer@alphanet.ch> wrote:
> Is that right, or is the kernel allowing to receive e.g. twice
> the data that can fit in a SCSI I/O request, and as soon as
> the command completes, sends the new command, and unlocks the
> user level for one transfer ?
No, it does not. Which makes the read or write on the ``raw'' device
slower in most cases compared to filesystem I/O on non command
queuing disks.
