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From: Con Kolivas <kernel@kolivas.org>
To: Andrew Morton <akpm@digeo.com>
Subject: Re: Rising io_load results Re: 2.5.63-mm1
Date: Fri, 28 Feb 2003 11:28:06 +1100
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On Fri, 28 Feb 2003 11:06 am, Andrew Morton wrote:
> Con Kolivas <kernel@kolivas.org> wrote:
> > On Fri, 28 Feb 2003 09:01 am, Dave McCracken wrote:
> > > --On Thursday, February 27, 2003 13:44:03 -0800 Andrew Morton
> > >
> > > <akpm@digeo.com> wrote:
> > > >> ...
> > > >> Mapped:       4294923652 kB
> > > >
> > > > Well that's gotta hurt.  This metric is used in making writeback
> > > > decisions.  Probably the objrmap patch.
> > >
> > > Oops.  You're right.  Here's a patch to fix it.
> >
> > Thanks.
> >
> > This looks better after a run:
> >
> > MemTotal:       256156 kB
> > ...
> > Mapped:        4546752 kB
>
> No, it is still wrong.  Mapped cannot exceed MemTotal.

Hmm a few more runs and io_load starts rising again and this is the meminfo in 
the middle of a run:

MemTotal:       256156 kB
MemFree:         26564 kB
Buffers:         11300 kB
Cached:         198048 kB
SwapCached:          0 kB
Active:           7164 kB
Inactive:       204736 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       256156 kB
LowFree:         26564 kB
SwapTotal:     4194272 kB
SwapFree:      4194272 kB
Dirty:            5780 kB
Writeback:           0 kB
Mapped:        6000680 kB
Slab:            13056 kB
Committed_AS:     7040 kB
PageTables:        200 kB
ReverseMaps:       664

Con

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