Re: [BUG] Strange 1-second pauses during Resume-from-RAM

Ingo Molnar
2007-12-01T18:34:27Z

* Jörn Engel <joern@logfs.org> wrote:

> > hm, that looks weird. if you disable CONFIG_PROVE_LOCKING, does that
> > improve things? (or just turns a noisy lockup into a silent lockup?)
>
> Not much, although the dumps look different now:
> http://logfs.org/~joern/trace3.jpg
> http://logfs.org/~joern/trace4.jpg
>
> I have to change my qemu setup a little to see the top of those
> dumps...

btw., if you start qemu like this:

qemu -cdrom ./cdrom.iso -hda ./hda.img -boot c -full-screen -kernel
~/bzImage -append "root=/dev/hda1 earlyprintk=serial,ttyS0,9600
console=tty console=ttyS0,9600 enforcing=0 debug"

you'll get the inner kernel's serial console log to qemu's standard
output. Pretty useful for capturing kernel crashes.

Ingo