From: Oswald Buddenhagen <ossi@kde.org>
To: linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Staircase scheduler v7.4
Date: Mon, 28 Jun 2004 17:39:20 +0200 [thread overview]
Message-ID: <20040628153920.GA21985@ugly.local> (raw)
In-Reply-To: <40E03713.9010208@kolivas.org>
On Tue, Jun 29, 2004 at 01:19:47AM +1000, Con Kolivas wrote:
> | i think using nice for both cpu share and latency is broken by design ...
> | a typical use case on my system: for real-time tv recording i need
> | mencoder to get some 80% of the cpu time on average. that means i have
> | to nice -<something "big"> it to prevent compiles, flash plugins running
> | amok, etc. from making mencoder explode (i.e., overrun buffers). but that
> | entirely destroys interactivity; in fact the desktop becomes basically
> | unusable.
>
> You want mencoder to use 80% of your cpu
>
yes.
> and be scheduled fast enough to not drop frames.
>
no. a) because the grabber runs in a separate thread that uses hardly
any cpu and should be auto-classified as interactive and b) because the
bttv driver can buffer a few frames in the kernel anyway.
greetings
--
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--
Chaos, panic, and disorder - my work here is done.
next prev parent reply other threads:[~2004-06-28 15:39 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-25 16:40 [PATCH] Staircase scheduler v7.4 Michael Buesch
2004-06-25 16:46 ` Con Kolivas
2004-06-25 18:44 ` Michael Buesch
2004-06-25 19:05 ` Willy Tarreau
2004-06-25 19:48 ` Michael Buesch
2004-06-26 1:11 ` kernel
2004-06-26 16:33 ` Michael Buesch
2004-06-26 17:29 ` Michael Buesch
2004-06-27 9:14 ` Con Kolivas
2004-06-27 19:17 ` Felipe Alfaro Solana
2004-06-27 19:28 ` Michael Buesch
2004-06-27 21:55 ` Felipe Alfaro Solana
2004-06-28 0:15 ` Con Kolivas
2004-06-28 8:40 ` Felipe Alfaro Solana
2004-06-28 8:49 ` Nick Piggin
2004-06-28 11:53 ` Felipe Alfaro Solana
2004-06-28 12:11 ` Con Kolivas
2004-06-28 15:03 ` Oswald Buddenhagen
2004-06-28 15:19 ` Con Kolivas
2004-06-28 15:39 ` Oswald Buddenhagen [this message]
2004-06-28 17:11 ` Felipe Alfaro Solana
2004-06-29 4:36 ` Nick Piggin
2004-06-28 23:21 ` Peter Williams
2004-06-29 4:44 ` Nick Piggin
2004-06-29 6:01 ` Ed Sweetman
2004-06-29 6:55 ` Nick Piggin
2004-06-26 2:05 ` Con Kolivas
2004-06-27 10:24 ` Con Kolivas
2004-06-27 10:27 ` Con Kolivas
2004-06-27 23:50 ` Peter Williams
2004-06-27 12:00 ` Con Kolivas
2004-06-27 12:04 ` Con Kolivas
2004-06-27 12:54 ` Michael Buesch
2004-06-27 13:15 ` Con Kolivas
2004-06-25 16:46 ` Michael Buesch
-- strict thread matches above, loose matches on Subject: below --
2004-06-25 14:38 Con Kolivas
2004-06-25 18:32 ` Matthias Urlichs
2004-06-26 1:28 ` Con Kolivas
2004-06-25 22:20 ` Willy Tarreau
2004-06-26 1:05 ` kernel
2004-06-26 20:04 ` Wes Janzen
2004-06-26 20:11 ` Michael Buesch
2004-06-26 21:14 ` Wes Janzen
2004-06-26 21:38 ` Prakash K. Cheemplavam
2004-06-27 9:16 ` Con Kolivas
2004-06-27 11:40 ` Grzegorz Kulewski
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