Subject: Re: Freeing swap space is slooooooooow
To: Lennart Augustsson <lennart@mail.augustsson.net>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: tech-kern
Date: 02/26/2001 21:50:51
On Mon, Feb 26, 2001 at 12:37:41AM -0500, Lennart Augustsson wrote:
> matthew green wrote:
> 
> >
> >    At some point someone decided to use extent maps to keep track of swap
> >    space.
> >
> > FWIW, this change occured when i rewrote vm_swap.c, well before even UVM.
> 
> Perhaps something in UVM or UBC has made the swap space more fragmented
> so that teh extent map has more things in it now?  I didn't note the problem
> until recently.

UBC pushes a lot more pages to swap.

--
Manuel Bouyer <bouyer@antioche.eu.org>
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