NetBSD Problem Report #25276

Received: (qmail 27063 invoked by uid 605); 22 Apr 2004 00:28:16 -0000
Message-Id: <20040422002809.045161F97@monkey.rezrov.net>
Date: Thu, 22 Apr 2004 09:28:09 +0900 (JST)
From: wileyc@rezrov.net
Sender: gnats-bugs-owner@NetBSD.org
Reply-To: wileyc@rezrov.net
To: gnats-bugs@gnats.NetBSD.org
Subject: pagedaemon consumes unreasonable amount of CPU
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>Number:         25276
>Category:       port-amd64
>Synopsis:       pagedaemon consumes unreasonable amount of CPU
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 22 00:29:00 +0000 2004
>Closed-Date:    Fri Nov 06 21:35:55 +0000 2009
>Last-Modified:  Fri Nov 06 21:35:55 +0000 2009
>Originator:     Christopher SEKIYA
>Release:        NetBSD 2.0C
>Organization:

-- Chris
	GPG key FEB9DE7F (91AF 4534 4529 4BCC 31A5  938E 023E EEFB FEB9 DE7F)
>Environment:


System: NetBSD monkey 2.0C NetBSD 2.0C (MONKEY) #0: Tue Apr 20 15:41:18 JST 2004 wileyc@monkey:/usr/local/b/current/src/sys/arch/amd64/compile/MONKEY amd64
Architecture: x86_64
Machine: amd64
>Description:

	On both 2.0_BETA and -current, pagedaemon will consume unreasonable
	amounts of CPU when doing anything "serious" (i.e., spawning a vi
	process, compiling anything from pkgsrc, and so forth).  This results
	in system stalls (on machines with large amounts of memory) and
	spontaneous reboots (when memory is exhausted).

>How-To-Repeat:

	Install NetBSD/amd64.  Start top.  Start a lengthy compile.  Watch
	the pagedaemon process jump up to the top of the process list; the
	machine should start freezing shortly thereafter.

>Fix:

	Not sure.  Something clearly isn't right ...

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback
State-Changed-By: chs@netbsd.org
State-Changed-When: Sun, 21 Aug 2005 22:59:15 +0000
State-Changed-Why:
are you still seeing this?  no one else has reported anything like this
in a long time.


State-Changed-From-To: feedback->open
State-Changed-By: chs@netbsd.org
State-Changed-When: Tue, 23 Aug 2005 14:13:33 +0000
State-Changed-Why:
he says:

Still seeing it right noww, as a matter of fact:

   16 root     -18    0     0K   11M pgdaemon  31:30 15.04% 15.04% [pagedaemon] 

It's not as bad as it was pre-2.0, where it would lock the machine for minutes  
on end, but it does make the machine pause once every minute for about three
seconds (-current as of about a week ago).


Responsible-Changed-From-To: port-amd64-maintainer->kern-bug-people
Responsible-Changed-By: ad@NetBSD.org
Responsible-Changed-When: Sun, 11 May 2008 22:54:56 +0000
Responsible-Changed-Why:
Not an amd64 problem.
This should be fixed in -current, and possibly 4.0 (I can't remember).


State-Changed-From-To: open->feedback
State-Changed-By: ad@NetBSD.org
State-Changed-When: Sun, 11 May 2008 22:54:56 +0000
State-Changed-Why:
Doh.
This should be fixed in -current, and possibly 4.0 (I can't remember).


State-Changed-From-To: feedback->closed
State-Changed-By: dsl@NetBSD.org
State-Changed-When: Fri, 06 Nov 2009 21:35:55 +0000
State-Changed-Why:
claimed fixed and in feedback for 18 months


>Unformatted:

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