Messages in this thread | | | Date | Fri, 25 Feb 2011 16:29:00 -0600 | From | Seth Forshee <> | Subject | Re: Performance/resume issues on Toshiba NB305 |
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On Fri, Feb 25, 2011 at 10:47:16PM +0100, Thomas Gleixner wrote: > Let's wait for the intel and acpi folks. It would be interesting what > the new intel toy says to your BIOS. > > http://biosbits.org/
Not much because it doesn't know about my processor. About all I could get out of it is that my MSRs are inconsistent, SMI latency is bad, and the round-trip latency via MWAIT test gives elapsed time = 285ms with 229 iterations/ms.
> > Then there must be a bug. When I cleared CLOCK_EVT_FEAT_ONESHOT for the > > HPET without this change the HPET got put into oneshot mode. The local > > tick device is checked before switching to nohz, but not the broadcast > > device. This change was just a quick hack to get around that and test my > > theory. > > Indeed. The patch below should cure that.
It works. I was wondering whether or not I should put the broadcast device in periodic mode with the local ones in nohz; I guess your patch answers my question.
> > Thanks, > > tglx > > -----------> > Subject: clockevents-fix-broadcast.patch > From: Thomas Gleixner <tglx@linutronix.de> > Date: Fri, 25 Feb 2011 22:34:23 +0100 > > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
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