NetBSD Problem Report #6168

Received: (qmail 28501 invoked from network); 16 Sep 1998 05:48:31 -0000
Message-Id: <199809160549.BAA10254@lunacity.ne.mediaone.net>
Date: Wed, 16 Sep 1998 01:49:53 -0400 (EDT)
From: "Charles M. Hannum" <root@ihack.net>
Reply-To: mycroft@netbsd.org
To: gnats-bugs@gnats.netbsd.org
Subject: Need knob to do async writes in NFSv2 server
X-Send-Pr-Version: 3.95

>Number:         6168
>Category:       kern
>Synopsis:       Need knob to do async writes in NFSv2 server
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 15 22:50:01 +0000 1998
>Closed-Date:    
>Last-Modified:  Mon Mar 29 19:30:39 +0000 2004
>Originator:     Charles M. Hannum
>Release:        1.0
>Organization:
        Internetwork Hacker
>Environment:
System: NetBSD lunacity.ne.mediaone.net 1.3H NetBSD 1.3H (BIKINI.UVM) #28: Mon Sep 14 01:53:00 EDT 1998 mycroft@lunacity.ne.mediaone.net:/usr/src/sys/arch/i386/compile/BIKINI.UVM i386


>Description:
        Our NFS server always does synchronous writes for v2 write
	requests.  Most vendor implementations do async writes by
	default, and have a knob to switch the behaviour.  This makes
	us look very bad on performance comparisons.

>How-To-Repeat:
        Time writes from a v2 client to NetBSD and (e.g.) Sun servers.

>Fix:
        Add such a knob (i.e. via sysctl(2)).  This should be trivial.

>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: gnats-admin->kern-bug-people 
Responsible-Changed-By: fair 
Responsible-Changed-When: Mon Dec 28 12:50:14 PST 1998 
Responsible-Changed-Why:  
This PR is the responsibility of the kern-bug-people, 
not the GNATS database administrator. 
>Unformatted:

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