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From: Michael Tokarev <mjt@tls.msk.ru>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm <kvm@vger.kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: kvm guest: hrtimer: interrupt too slow
Date: Tue, 06 Oct 2009 17:30:36 +0400	[thread overview]
Message-ID: <4ACB467C.9050100@msgid.tls.msk.ru> (raw)
In-Reply-To: <4AC9BCFD.1040502@msgid.tls.msk.ru>

Michael Tokarev wrote:
> Marcelo Tosatti wrote:
> []
>> You should see min_delta_ns increase to a much smaller value, 
>> hopefully in
>> the 2000-10000 range.
> 
> That's what I see:
> 

Oct  4 16:13:09 paltus kernel: [boot]
Oct  5 12:35:51 paltus kernel: hrtimer: interrupt too slow, forcing clock min delta to 1500 ns
Oct  5 12:47:29 paltus kernel: hrtimer: interrupt too slow, forcing clock min delta to 2250 ns
Oct  5 15:46:41 paltus kernel: hrtimer: interrupt too slow, forcing clock min delta to 3375 ns
Oct  5 23:13:08 paltus kernel: hrtimer: interrupt too slow, forcing clock min delta to 5062 ns
Oct  6 17:14:38 paltus kernel: hrtimer: interrupt too slow, forcing clock min delta to 7593 ns

So it's increasing, slowly, so far.  Hopefully it'll slow down
further.

I want to reboot the host today, so it'll start over.

/mjt

  reply	other threads:[~2009-10-06 13:31 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-29 13:12 kvm guest: hrtimer: interrupt too slow Michael Tokarev
2009-09-29 13:47 ` Avi Kivity
2009-09-29 13:58   ` Michael Tokarev
2009-10-05 10:47     ` Avi Kivity
2009-10-03 23:12 ` Marcelo Tosatti
     [not found]   ` <4AC88E7E.8050909@msgid.tls.msk.ru>
2009-10-05  0:50     ` Marcelo Tosatti
2009-10-05  9:31       ` Michael Tokarev
2009-10-06 13:30         ` Michael Tokarev [this message]
2009-10-07 23:17   ` Frederic Weisbecker
2009-10-08  0:54     ` Marcelo Tosatti
2009-10-08  7:54       ` Michael Tokarev
2009-10-08  8:06         ` Thomas Gleixner
2009-10-08  8:14           ` Michael Tokarev
2009-10-08  9:29             ` Thomas Gleixner
2009-10-08 14:06               ` Michael Tokarev
2009-10-08 15:06                 ` Thomas Gleixner
2009-10-08 19:52                 ` Marcelo Tosatti
2009-10-09 21:22                   ` Michael Tokarev
2009-10-09 22:27                     ` Frederic Weisbecker
2009-10-09 22:34                       ` Michael Tokarev
2009-10-10  9:18                         ` Michael Tokarev
2009-10-10  9:24                           ` Frederic Weisbecker
2009-10-10 17:37                         ` Marcelo Tosatti
2009-10-08  8:05       ` Thomas Gleixner
2009-10-08 19:22         ` Marcelo Tosatti
2009-10-08 20:25           ` Thomas Gleixner
2009-10-08 21:02             ` Michael Tokarev
2009-10-10 17:32             ` [PATCH] tune hrtimer_interrupt hang logic Marcelo Tosatti
2009-10-08  8:09     ` kvm guest: hrtimer: interrupt too slow Michael Tokarev

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