Subject: Re: Strange VM behaviour
To: Lennart Augustsson <firstname.lastname@example.org>
From: Jason R Thorpe <email@example.com>
Date: 02/17/2001 09:33:06
On Sat, Feb 17, 2001 at 10:12:50AM -0500, Lennart Augustsson wrote:
> every time:
It would be nice to put a breakpoint at uvm_anon_dropswap and see if it's
getting into extent_free many times, or if it's really looping in extent_free.
> So it seems that we have a severe algorithmic problem in extent_free
> (or just a plain bug?). I didn't look much more at it, but it looks to me
> like removing all entries from an extent map is quadratic, so if the map
> grows large this could be a problem.
> -- Lennart
> Chuck Silvers wrote:
> > sorry, I missed the part about no disk activity.
> > this sounds a bit different from problems I've heard of.
> > -Chuck
> > On Sun, Feb 04, 2001 at 03:20:28PM -0500, Lennart Augustsson wrote:
> > > Yes, my tree is very up-todate. I've had this problem ever since UBC was
> > > integrated. It's not the same as the problem Jason fixed. Jason's fix makes
> > > interactive response better under heavly load. Note that when my machine
> > > freezes there is NO disk activity.
> > >
> > > -- Lennart
-- Jason R. Thorpe <firstname.lastname@example.org>