From: Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux kernel mailing list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>,
Daniel Phillips <phillips@arcor.de>,
Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH] O5int for interactivity
Date: 14 Jul 2003 17:25:01 +0200 [thread overview]
Message-ID: <1058196300.582.5.camel@teapot.felipe-alfaro.com> (raw)
In-Reply-To: <200307142232.05782.kernel@kolivas.org>
On Mon, 2003-07-14 at 14:32, Con Kolivas wrote:
> More interactivity work for audio and X smoothness. I have fixed all my test
> cases and need feedback about others to develop beyond this.
>
> Changes
> The idle code now gives just under interactive state based on the runtime
> instead of min_sleep_avg - minor startup speed improvement.
>
> Tasks that drop their priority while running are now put to the end of the
> queue to continue their timeslice. Fixes a little flutter when tasks are
> cpu hogs for short periods (eg mozilla).
>
> Tasks that are complete cpu hogs are put on the expired array every time they
> run out of timeslice.
Hmmm... Starvation is back for me (Pentium III 700Mhz + ACPI):
1. Log on to X/KDE
2. Launch Konqueror
3. Launch XMMS
4. Make XMMS play a song
5. Move the Konqueror window all over the desktop.
Step 5 causes XMMS to completely starve for exactly 5 seconds. After
those 5 seconds, the XMMS priority gets adjusted and sound comes back
from my speakers.
Another way to starve XMMS for 5 seconds:
1. Launch XMMS
2. Make it play
3. Run a standard CPU hogger: "while true; do a=2; done"
Step 3 will make XMMS starve for exactly 5 seconds. Also, during those 5
seconds, X is completely jerky and moving the mouse makes the pointer
goes jumping all over the screen.
Do you want additional information? Any patch trying?
Thanks!
next prev parent reply other threads:[~2003-07-14 15:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-14 12:32 [PATCH] O5int for interactivity Con Kolivas
2003-07-14 15:25 ` Felipe Alfaro Solana [this message]
2003-07-14 19:11 ` Con Kolivas
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