Messages in this thread |  | | | From | Con Kolivas <> | | Subject | Re: [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3 | | Date | Fri, 5 Aug 2005 10:31:33 +1000 |
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On Fri, 5 Aug 2005 08:12 am, Marc Ballarin wrote: > On Wed, 3 Aug 2005 15:59:24 +1000 > > Con Kolivas <kernel@kolivas.org> wrote: > > This is the dynamic ticks patch for i386 as written by Tony Lindgen > > <tony@atomide.com> and Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>. > > Patch for 2.6.13-rc5 > > One issue (tested the -rc4 Version on -mm): > - on interrupt flood (ping -f) HZ goes down to 0-4 HZ. > This matches "ticks to skip" below. Coincidence? > > - ping -f complains: > .Warning: time of day goes back (-304us), taking countermeasures. > ... > .Warning: time of day goes back (-33us), taking countermeasures. > > Yet, system time _seems_ to be kept correctly.
Interesting... It almost seems like if you throw enough interrupts at it the next_timer_interrupt function gets confused. I wonder if S390 and ARM are seeing this at all since (it seems to me) they use that function?
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