Re: [RT] read_tsc: ACK! TSC went backward! Unsynced TSCs?

Steven Rostedt
2005-11-28T12:59:54Z

On Mon, 2005-11-28 at 13:30 +0100, Jonas Oreland wrote:
> Steven Rostedt wrote:
> > Hi Ingo,
> >
> > With -rt20 on the AMD64 x2, I'm getting a crap load of these:
> >
> > read_tsc: ACK! TSC went backward! Unsynced TSCs?
> >
> > So bad that the system wont even boot (at least I won't wait long enough
> > to let it finish).
> >
> > config at: http://www.kihontech.com/tests/rt/config
>
> Check this: http://bugzilla.kernel.org/show_bug.cgi?id=5105
>
> Booting with idle=poll, fixes that.
>
> Hope it help

I forgot to mention that I tried that too. But thank you for sending
this, because, just to make sure, I tried it again, and now it booted.
I think I might have had a typo when adding idle=poll the first time. I
think of this as a temporary solution, and I won't be adding that to
grub anytime soon. Manually typing it in at boot time will keep me
remembering that it is there. As long as I make sure that I type it
right ;-)

OK, this means that I don't want to stay in the -RT kernel too long
(electric prices are up you know).

-- Steve