From: Janne Grunau <j@jannau.net>
To: Schubert Andreas <andreas.schubert@die-einrichtung.org>
Cc: linux-media@vger.kernel.org
Subject: Re: budget_av and high load
Date: Wed, 15 Dec 2010 13:03:46 +0100 [thread overview]
Message-ID: <20101215120346.GV8381@aniel.fritz.box> (raw)
In-Reply-To: <E337B607-FA77-46A4-BB16-1A1700BFC7C3@die-einrichtung.org>
On Fri, Dec 10, 2010 at 01:15:14PM +0100, Schubert Andreas wrote:
> Hello everybody on the list,
>
> I have a KNC-1 DVB-S card running under kernel 2.6.36 and mythtv. I experience high load values in top like mentioned ages ago in this thread: http://www.linuxtv.org/pipermail/linux-dvb/2008-June/026509.html.
> My card has no CI-Module installed and the high load was CI-Module related, so I decided to give it a try and completely disable ciintf_init() in the kernel module which helped a lot. Load decreased by 50-80%. So I decided to add a module parameter to disable ciintf_init() on demand. Here is the diff:
>
> 65,69d64
> <
> < int budget_init_ci=1;
> < module_param_named(init_ci, budget_init_ci, int, 0644);
> < MODULE_PARM_DESC(init_ci, "Turn on(1)/off(0) ci initializing (default:on).");
> <
> 1519,1520c1514
> < if (budget_init_ci)
> < ciintf_init(budget_av);
> ---
> > ciintf_init(budget_av);
>
> I don't know if this is useful at all so please be patient with me.
It's useful as bug report. I don't think the module parameter makes
sense we should simply fix the bug. I'll look if I can reproduce this
with one of my budget_av DVB-C cards.
Janne
parent reply other threads:[~2010-12-15 12:09 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <E337B607-FA77-46A4-BB16-1A1700BFC7C3@die-einrichtung.org>]
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