Re: swap_free: swap-space map bad (entry 00000100)

[Jeremy Linton]

> On Fri, 27 Jul 2001, Samuel Dupas wrote:
> > On Fri, 27 Jul 2001 12:29:18 -0500
> > "Jeremy Linton" <[e-mail]> wrote:
> > > Did you do a 'swapoff' at some point before this?
> > >
> >
> > No, I didn't change anything. I just put stress on it with ab to
> > test the machine but it felt down :-((
> >
> > Others ideas ?
>
> The memory corruption you saw usually (almost always)
> indicates a hardware problem. It may not have shown up
> during normal usage because without ab your RAM has
> more idle time and can keep up refreshing itself
> easily.

I asked about the swapoff path because I have a couple of stable MP boxes
that exhibit swap map corruption (similar to what he appears to be seeing)
during/after a swapoff operation in 2.4. I presented a patch a couple weeks
ago that fixes some of the problems that I am seeing. A quick look at 2.2.19
makes it look the same problems might exist there as well. If he isn't doing
swapoff then my fixes probably won't help him.

                                                                jlinton