Subject: Re: Freeing swap space is slooooooooow
To: Lennart Augustsson <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
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 <firstname.lastname@example.org>