Re: netbsd-5 i386 PAE dom0 + hvm domU winxp?

[Jukka Marin <jmarin%embedtronics.fi@localhost>]

On Tue, Mar 23, 2010 at 04:28:32PM +0100, Manuel Bouyer wrote:
> > Is it normal that running, say, bzip2 in dom0, slows down domU's quite
> > a lot?  I'm compressing a large file and the hvm domain is now so slow
> > that I thought it had died..
> 
> It could be possible if the dom0 start swapping, which slows down the qemu
> process as well.

It's not swapping, no swap is in use.  It seems that a "busy-looping" program
affects the guests more than one that does lots of I/O.

> > I tried envstat on dom0, but the process entered D state and it never seems
> > to recover.  Wchan is tstile.  I have ipmi on the motherboard and it seems
> > to be enabled in DOM0 kernels by default..  I think envstat worked in NetBSD
> > 4.0, I wonder why it gets stuck in 5.0_STABLE?
> 
> No idea, I've never been hit by this issue (at last with envstat).
> Is there other processes hung in tstile ?

No, envstat is the only one.

  -jm