NetBSD Problem Report #9308

Received: (qmail 10652 invoked from network); 28 Jan 2000 02:26:06 -0000
Message-Id: <200001272216.OAA00261@jove.stargate.net>
Date: Thu, 27 Jan 2000 14:16:07 -0800 (PST)
From: darkstar@pgh.net
Reply-To: darkstar@pgh.net
To: gnats-bugs@gnats.netbsd.org
Subject: UVM can loop when out of memory
X-Send-Pr-Version: 3.95

>Number:         9308
>Category:       kern
>Synopsis:       UVM can loop when out of memory
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    chs
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 27 18:27:00 +0000 2000
>Closed-Date:    Fri Nov 27 04:44:24 +0000 2009
>Last-Modified:  Fri Nov 27 04:44:24 +0000 2009
>Originator:     Matthew Orgass
>Release:        2000-01-23
>Organization:

>Environment:
	K6-3 450MHz with 64MB memory
System: NetBSD jove.stargate.net 1.4Q NetBSD 1.4Q (JOVE) #0: Sun Jan 23 10:38:54 PST 2000 root@jove.stargate.net:/usr/src/sys/arch/i386/compile/JOVE i386


>Description:
	Running "grep foo /dev/zero &; grep foo /dev/zero &;" with X
running wedges UVM into a loop 100% of the time.

	It appears to be spending most, if not all, of its time in
uvmpd_scan.

>How-To-Repeat:
	grep foo /dev/zero &; grep foo /dev/zero &; top
	Takes less then a minute to get into the loop.

>Fix:
	Don't know.
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: kern-bug-people->chs 
Responsible-Changed-By: fair 
Responsible-Changed-When: Wed Mar 21 18:48:42 PST 2001 
Responsible-Changed-Why:  
Chuck Silvers is our UVM expert. 

State-Changed-From-To: open->feedback
State-Changed-By: rmind@NetBSD.org
State-Changed-When: Fri, 27 Nov 2009 04:35:24 +0000
State-Changed-Why:
Cannot reproduce on netbsd-5 or -current, processes get killed.
There were many fixed to pagedaemon in netbsd-5 development cycle.
Do you see any similar problem on recent systems?


State-Changed-From-To: feedback->closed
State-Changed-By: rmind@NetBSD.org
State-Changed-When: Fri, 27 Nov 2009 04:44:24 +0000
State-Changed-Why:
Email bounced.  Too much has changed since 1.4, therefore assume fixed.
A new PR should be filled if problem will be seen again.


>Unformatted:

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