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From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Vasily Khoruzhick <anarsoul@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Sitsofe Wheeler <sitsofe@yahoo.com>,
	Venkatesh Pallipadi <venki@google.com>,
	intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	Len Brown <lenb@kernel.org>
Subject: Re: Interrupt latency on some 945GM platforms
Date: Fri, 24 Sep 2010 12:39:01 -0700	[thread overview]
Message-ID: <20100924123901.243c85e1@jbarnes-desktop> (raw)
In-Reply-To: <201009162306.59508.anarsoul@gmail.com>

On Thu, 16 Sep 2010 23:06:46 +0300
Vasily Khoruzhick <anarsoul@gmail.com> wrote:

> В сообщении от 16 of September 2010 21:50:50 автор Thomas Gleixner написал:
> > Ok. The problematic part of HPET was not the clocksource, it was the
> > clock event device which failed to deliver interrupts occasionally. It
> > was worth a try at least.
> 
> Hm, it seems that jerky glxgears is not related to jerky keyboard events. 
> Keyboard is jerky only in konsole (kde terminal emulator), it seems something 
> happened it seems that font rendering performance is much worse in latest 
> xf86-video-intel than in xf86-video-intel-2.12.0.

Len just had me try a few things too:
  - maxcpus=1 lets things work
  - offlining cpu1 at runtime (echo 0
    > /sys/devices/system/cpu/cpu1/online) lets things work
  - binding the i915 interrupt to cpu 0 does *not* help

Vasily and Paolo, do you both have Atom CPUs with hyperthreading
enabled?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

  reply	other threads:[~2010-09-24 19:39 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <201009132336.17310.anarsoul@gmail.com>
     [not found] ` <20100913134441.762001f7@jbarnes-desktop>
     [not found]   ` <201009140010.14783.anarsoul@gmail.com>
2010-09-13 21:19     ` Jesse Barnes
2010-09-13 21:41       ` Vasily Khoruzhick
2010-09-13 21:46         ` Jesse Barnes
2010-09-13 21:52           ` Vasily Khoruzhick
2010-09-13 21:59             ` Jesse Barnes
2010-09-13 22:03               ` Vasily Khoruzhick
2010-09-14  0:55                 ` Venkatesh Pallipadi
2010-09-14  8:09                   ` Vasily Khoruzhick
2010-09-14  9:52                     ` Thomas Gleixner
2010-09-14 12:29                       ` Vasily Khoruzhick
2010-09-14 22:41                         ` Sitsofe Wheeler
2010-09-15  7:07                           ` Vasily Khoruzhick
2010-09-16 15:03                           ` Vasily Khoruzhick
2010-09-16 18:07                             ` Thomas Gleixner
2010-09-16 18:30                               ` Vasily Khoruzhick
2010-09-16 18:42                                 ` Vasily Khoruzhick
2010-09-16 18:50                                   ` Thomas Gleixner
2010-09-16 20:06                                     ` Vasily Khoruzhick
2010-09-24 19:39                                       ` Jesse Barnes [this message]
2010-09-24 19:48                                         ` Vasily Khoruzhick
2010-09-24 19:51                                           ` Jesse Barnes
2010-09-26 10:53                                             ` Stefan Biereigel
2010-09-27  0:46                                               ` Shaohua Li
2010-09-27  5:45                                                 ` Stefan Biereigel
2010-09-27 11:41                                                 ` Vasily Khoruzhick
2010-09-27 21:18                                               ` Vasily Khoruzhick
2010-09-25 10:25                                         ` Paolo Ornati
2010-09-17  9:02                             ` [Intel-gfx] " Simon Farnsworth
2010-09-17 16:30                               ` Jesse Barnes
2010-09-17 12:50                                 ` Vasily Khoruzhick
2010-09-21 18:26                                   ` Paolo Ornati
2010-09-21 22:56                                     ` Jesse Barnes
2010-09-22  5:57                                       ` Vasily Khoruzhick
2010-09-23 18:21                                       ` Paolo Ornati
2010-09-25 10:28                                       ` Paolo Ornati
2010-10-16 15:54                                         ` [Intel-gfx] Interrupt latency on some 945GM platforms -- and TCP/IP silent data corruption? Paolo Ornati
2010-09-24 18:41                             ` Interrupt latency on some 945GM platforms Jesse Barnes
2010-09-14  9:55                     ` Andi Kleen

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