From: Arjan van de Ven <arjan@infradead.org>
To: "Nallasellan, Singaravelan" <singaravelan.nallasellan@intel.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Player Thread is not woken after period elapsed
Date: Mon, 5 Sep 2011 10:52:53 -0700 [thread overview]
Message-ID: <20110905105253.2787b91f@infradead.org> (raw)
In-Reply-To: <3CA6C6D9F70D314CA34352990B57DA1507C420F147@bgsmsx502.gar.corp.intel.com>
On Mon, 5 Sep 2011 23:08:53 +0530
"Nallasellan, Singaravelan" <singaravelan.nallasellan@intel.com> wrote:
> Hi,
>
> When I tried to root cause a glitch in the audio playback, I found a
> weird behavior.
>
> User thread which invokes the writei function which in turn invokes
> a kernel function which waits for the free buffer to write the audio
> data. This kernel function adds this thread to a wake(sleep) queue
> and calls a schedule_timeout (msecs_to_jiffies(10000)).
actually it doesn't... you must be on some really really old kernel or
something.
>
> Will you provide some hint on how to go about identifying the root
> cause?
https://lkml.org/lkml/2011/9/5/201
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2011-09-05 17:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-05 17:38 Player Thread is not woken after period elapsed Nallasellan, Singaravelan
2011-09-05 17:52 ` Arjan van de Ven [this message]
2011-09-05 18:08 ` Nallasellan, Singaravelan
2011-09-05 18:22 ` Arjan van de Ven
2011-09-06 14:19 ` Nallasellan, Singaravelan
2011-09-07 3:06 ` Arjan van de Ven
2011-09-07 12:02 ` Nallasellan, Singaravelan
2011-09-08 2:13 ` Yong Zhang
2011-09-08 7:29 ` Yong Zhang
2011-09-08 9:45 ` Nallasellan, Singaravelan
2011-09-09 6:07 ` Yong Zhang
2011-09-09 12:42 ` Nallasellan, Singaravelan
2011-09-14 8:39 ` Yong Zhang
2011-09-14 9:18 ` Shan Hai
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