On (08/20/13 17:42), Frederic Weisbecker wrote:
> On Tue, Aug 20, 2013 at 06:35:50PM +0300, Sergey Senozhatsky wrote:
> > On (08/20/13 17:15), Frederic Weisbecker wrote:
> > > On Tue, Aug 20, 2013 at 02:14:26PM +0300, Sergey Senozhatsky wrote:
> > > Hello,
> > >
> > > Please upload your config.
> > >
> > > I'm adding Stanislaw in Cc in case it relates to cputime scaling.
> > >
> >
> > please find attached.
> >
> > -ss
>
> > #
> > # CPU/Task time and stats accounting
> > #
> > CONFIG_VIRT_CPU_ACCOUNTING=y
> > CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
>
> So it happens with full dynticks cputime accounting.
> How reproducable is this? Does it always happen?
> Does it happen with CONFIG_TICK_CPU_ACCOUNTING as well? (you'll
> need to deactivate full dynticks.)
>
> Thanks.
>
with full dynticks disabled:
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ_FULL is not set
# CONFIG_NO_HZ is not set
CONFIG_HIGH_RES_TIMERS=y
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
everything looks fine (no overflow).
-ss
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