Re: watchdog: print stolen time increment at softlockup detection

2013-07-03 Thread Marcelo Tosatti
On Wed, Jul 03, 2013 at 12:44:01PM -0400, Don Zickus wrote: > On Fri, Jun 28, 2013 at 05:37:39PM -0300, Marcelo Tosatti wrote: > > On Fri, Jun 28, 2013 at 10:12:15AM -0400, Don Zickus wrote: > > > On Thu, Jun 27, 2013 at 11:57:23PM -0300, Marcelo Tosatti wrote: > > > > > > > > One possibility for

Re: watchdog: print stolen time increment at softlockup detection

2013-07-03 Thread Marcelo Tosatti
On Wed, Jul 03, 2013 at 12:44:01PM -0400, Don Zickus wrote: > > And why overcommitment is not a valid reason to generate a softlockup in > > the first place ? > > For the guest I don't believe it is. It isn't the guest's fault it > couldn't run processes. A warning should be scheduled on the hos

Re: watchdog: print stolen time increment at softlockup detection

2013-07-03 Thread Don Zickus
On Fri, Jun 28, 2013 at 05:37:39PM -0300, Marcelo Tosatti wrote: > On Fri, Jun 28, 2013 at 10:12:15AM -0400, Don Zickus wrote: > > On Thu, Jun 27, 2013 at 11:57:23PM -0300, Marcelo Tosatti wrote: > > > > > > One possibility for a softlockup report in a Linux VM, is that the host > > > system is ov

Re: watchdog: print stolen time increment at softlockup detection

2013-06-28 Thread Marcelo Tosatti
On Fri, Jun 28, 2013 at 10:12:15AM -0400, Don Zickus wrote: > On Thu, Jun 27, 2013 at 11:57:23PM -0300, Marcelo Tosatti wrote: > > > > One possibility for a softlockup report in a Linux VM, is that the host > > system is overcommitted to the point where the watchdog task is unable > > to make prog

Re: watchdog: print stolen time increment at softlockup detection

2013-06-28 Thread Don Zickus
On Thu, Jun 27, 2013 at 11:57:23PM -0300, Marcelo Tosatti wrote: > > One possibility for a softlockup report in a Linux VM, is that the host > system is overcommitted to the point where the watchdog task is unable > to make progress (unable to touch the watchdog). I think I am confused on the VM/

Re: watchdog: print stolen time increment at softlockup detection

2013-06-28 Thread Paolo Bonzini
Il 28/06/2013 04:57, Marcelo Tosatti ha scritto: > > One possibility for a softlockup report in a Linux VM, is that the host > system is overcommitted to the point where the watchdog task is unable > to make progress (unable to touch the watchdog). > > Maintain the increment in stolen time for th