Re: Oops in __free_pages_ok (pre7-1) (Long) (backtrace)

[Rik van Riel <riel@conectiva.com.br>]

On Thu, 4 May 2000, Rajagopal Ananthanarayanan wrote:
> Linus Torvalds wrote:

> > There might be other details like this lurking, but this looks like a good
> > first try. Ananth, willing to give it a whirl?
> 
> I haven't looked at the code, but I replaced the whole while (1)
> loop with the new for(;;). Things still remain the same: when
> running dbench VM starts killing processes.

I've been thinking about it some more. When we look
carefully the killing is always accompanied by a sudden
decrease in free memory (while kswapd could easily keep
up a few seconds ago).

Having an active/inactive queue, where we maintain a
certain target number of inactive pages, should give us
some more robustness against sudden overload. Also,
guaranteeing that we have indeed a certain number of
freeable pages in every zone...

I'm coding this up as we speak, so please hold on a
little longer ...

regards,

Rik
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