kern/103455: "swap_pager: indefinite wait buffer" with page file enabled (causes lockups)

[Kris Kennaway]

On Fri, Jan 26, 2007 at 10:40:26PM +0100, Remco Bressers wrote:
> On vr, 2007-01-26 at 13:58 -0500, Kris Kennaway wrote:
> > On Thu, Jan 25, 2007 at 10:40:23AM +0000, Remco Bressers wrote:
> > > The following reply was made to PR kern/103455; it has been noted by GNATS.
> > > 
> > > From: Remco Bressers <rbressers at signet.nl>
> > > To: bug-followup at FreeBSD.org, nick at nickwithers.com
> > > Cc:  
> > > Subject: Re: kern/103455: "swap_pager: indefinite wait buffer" with page
> > > 	file enabled (causes lockups)
> > > Date: Thu, 25 Jan 2007 09:38:21 +0100
> > > 
> > >  Hi,
> > >  
> > >  I noticed the same problem on 6.2-RELEASE on a heavily loaded storage
> > >  system running rsync.
> > >  When multiple clients connect to the rsync box and start filling up the
> > >  memory with file-lists, the machine (once in a while) locks up with the
> > >  same messages : 
> > >  
> > >  swap_pager: indefinite wait buffer: bufobj: 0, blkno: 43638, size: 4096
> > >  swap_pager: indefinite wait buffer: bufobj: 0, blkno: 43947, size: 32768
> > >  swap_pager: indefinite wait buffer: bufobj: 0, blkno: 44007, size: 4096
> > >  swap_pager: indefinite wait buffer: bufobj: 0, blkno: 47939, size: 32768
> > >  
> > >  The machine becomes non-responsive unfortunatly.
> > 
> > Are you sure it's the same, i.e. are you also using a swap file?
> > 
> > Kris
> 
> I'm using a swap filesystem. The machine has 1GB of RAM : 

Then no, it's not the same ;-)

Anyway, check the archives for previous mails discussing this topic,
including steps to try and work around and/or diagnose the problem.

Kris