Subject: kern/3546: Not all disk I/O reported in statistics.
To: None <>
From: Lennart Augustsson <>
List: netbsd-bugs
Date: 04/27/1997 00:10:36
>Number:         3546
>Category:       kern
>Synopsis:       Not all disk I/O reported in statistics.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 26 15:20:01 1997
>Originator:     Lennart Augustsson
Department of Computing Science, Chalmers University
>Release:        NetBSD-current 97-04-26
System: NetBSD calvin 1.2D NetBSD 1.2D (CALVIN) #32: Sat Apr 26 19:35:47 MEST 1997 augustss@calvin:/users/NetBSD/src/sys/arch/i386/compile/CALVIN i386

	I/O on SCSI devices that are performed directly with the ioctl()
	that executes SCSI commands are not counted in the disk statistics.
	Run a program that does direct I/O (I have a program that reads audio
	CDs) and check iostat.
	Well, I guess some disk_busy(), disk_unbusy() calls need to be inserted,
	but I'm not sure where.