From muir@idiom.com  Sat Jan 14 03:33:11 1995
Received: from idiom.com (idiom.com [140.174.82.4]) by freefall.cdrom.com (8.6.9/8.6.6) with ESMTP id DAA11217 for <FreeBSD-gnats-submit@freebsd.org>; Sat, 14 Jan 1995 03:33:04 -0800
Received: (from muir@localhost) by idiom.com (8.6.9/8.6.9) id DAA19506; Sat, 14 Jan 1995 03:32:59 -0800
Message-Id: <199501141132.DAA19506@idiom.com>
Date: Sat, 14 Jan 1995 03:32:59 -0800
From: David Muir Sharnoff <muir@idiom.com>
Reply-To: muir@idiom.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: systat iostat display doesn't scale high enough
X-Send-Pr-Version: 3.2

>Number:         115
>Category:       bin
>Synopsis:       systat iostat display doesn't scale high enough
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jan 14 03:40:02 1995
>Closed-Date:    Fri Jul 16 10:15:48 PDT 1999
>Last-Modified:  Fri Jul 16 10:19:10 PDT 1999
>Originator:     David Muir Sharnoff
>Release:        FreeBSD 2.0-RELEASE i386
>Organization:
Idiom Consulting
>Environment:

	I have a segate ST32550N - low power 2GB narrow scsi barracuda
	disk attached through an ncr53c810 PCI SCSI controller.  It can 
	read 6.5MB/second though the filesystem.

>Description:

		  /0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50
	fd0   bps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX55.6
	      tps|XXXXXXX
	fd1   bps|
	      tps|
	sd0   bps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX1777.8
	      tps|XXXXXXX
	cd0   bps|  
	      tps|

	My disk isn't even busy right now.   For busy it looks like:


		  /0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50
	fd0   bps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX2919.5
	      tps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
	fd1   bps|
	      tps|
	sd0   bps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX93745.0
	      tps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
	cd0   bps|  
	      tps|


	A logrithmic scale may be necessary, or having the units change,
	or something.  93745 >>>>> 50.  Actually, 93745 is too high to
	be believed.  The best my disk should be able to do is around
	13000bps.  (I suppose it could burst higher due to its caching
	controller, but 93745bps is not to be believed)

	I will file this as a separte bug report.

>How-To-Repeat:
	
	get a fast disk, run systat.

>Fix:
	
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->bde 
Responsible-Changed-By: scrappy 
Responsible-Changed-When: Sat Apr 13 21:50:48 PDT 1996 
Responsible-Changed-Why:  
Responsible-Changed-From-To: bde->freebsd-bugs 
Responsible-Changed-By: bde 
Responsible-Changed-When: Tue Dec 17 04:15:53 PST 1996 
Responsible-Changed-Why:  
I won't be fixing this soon. 
The description shows impossible speeds for fd0.  iostat isn't really 
supported for floppies, so allocating space for floppies just wastes 
space. 
State-Changed-From-To: open->suspended 
State-Changed-By: phk 
State-Changed-When: Mon May 25 01:11:08 PDT 1998 
State-Changed-Why:  
Awaiting committer 
State-Changed-From-To: suspended->closed 
State-Changed-By: n_hibma 
State-Changed-When: Fri Jul 16 10:15:48 PDT 1999 
State-Changed-Why:  
Systat has been updated to use Mb/s instead of bps. On a system here it  
kind of  represents the right thing at 6Mb/s (as accurate as you get on an 
ASCII display). 

For the record, this PR was filed on 

Sat Jan 14 03:40:02 1995 

:-) 

>Unformatted:


