Understanding clock drift in virtual machines w/ CFS, NOHZ

2008-02-06 Thread Mika Bostrom
Good day. I have come across the occasional issue of clock drift when running (earlier) kernels inside a virtual machine. The reason for drift is simple enough - host may be under heavy load, guest may not get enough resources to run all the ticks (HZ) it is supposed to. At least to put it

Understanding clock drift in virtual machines w/ CFS, NOHZ

2008-02-06 Thread Mika Bostrom
Good day. I have come across the occasional issue of clock drift when running (earlier) kernels inside a virtual machine. The reason for drift is simple enough - host may be under heavy load, guest may not get enough resources to run all the ticks (HZ) it is supposed to. At least to put it

Re: the "Turing Attack" (was: Sabotaged PaXtest)

2005-02-11 Thread Mika Bostrom
[Posted only on LKML, this has become humour.] On Thu, Feb 10, 2005 at 09:03:00PM +0100, David Weinehall wrote: > On Thu, Feb 10, 2005 at 04:21:49PM +0100, Ingo Molnar wrote: > > > > * Jakob Oestergaard <[EMAIL PROTECTED]> wrote: > > > > PaX cannot be a 'little bit pregnant'. (you might argue

Re: the Turing Attack (was: Sabotaged PaXtest)

2005-02-11 Thread Mika Bostrom
[Posted only on LKML, this has become humour.] On Thu, Feb 10, 2005 at 09:03:00PM +0100, David Weinehall wrote: On Thu, Feb 10, 2005 at 04:21:49PM +0100, Ingo Molnar wrote: * Jakob Oestergaard [EMAIL PROTECTED] wrote: PaX cannot be a 'little bit pregnant'. (you might argue that