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BlueShift
Tux's lil' helper
Tux's lil' helper


Joined: 04 Jun 2002
Posts: 114
Location: Belgium

PostPosted: Fri Aug 16, 2002 11:18 am    Post subject: Preemptible kernel patch Reply with quote

Probably a question for developers:

I noticed the ppc-sources package (for gentoo 1.2) does not include the preemptible kernel patch. The latest Changelog of this patch mentions PPC support is merged.
I tried this patch manually and everything seems to work perfectly.
Are there any plans for including this patch in the ppc-sources package?

Greetings,
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Gerk
Retired Dev
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Joined: 07 May 2002
Posts: 435

PostPosted: Fri Aug 16, 2002 7:35 pm    Post subject: Reply with quote

do you have a url for the patch so it can be investigated further?
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BlueShift
Tux's lil' helper
Tux's lil' helper


Joined: 04 Jun 2002
Posts: 114
Location: Belgium

PostPosted: Fri Aug 16, 2002 8:56 pm    Post subject: Reply with quote

I used ftp://ftp.de.kernel.org/pub/linux/kernel/people/rml/preempt-kernel/v2.4/preempt-kernel-rml-2.4.19-rc5-3.patch
patching the sources (from ebuild ppc-sources-2.4.19-r6) gave me 1 failed hunk, but since that was on a file in the directory arch/i386 (sorry, didn't record which one) I figured it wouldn't matter and my kernel seems to be running fine for 9 hours now.
Greetings,[/url]
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trance
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Joined: 06 May 2002
Posts: 13
Location: Santa Clara, CA

PostPosted: Mon Aug 19, 2002 7:57 am    Post subject: Re: Preemptible kernel patch Reply with quote

BlueShift wrote:
Probably a question for developers:

I noticed the ppc-sources package (for gentoo 1.2) does not include the preemptible kernel patch. The latest Changelog of this patch mentions PPC support is merged.
I tried this patch manually and everything seems to work perfectly.
Are there any plans for including this patch in the ppc-sources package?

Greetings,


Currently preempt is still pretty unstable. I've been testing preempt on ppc for awhile now, and while things have gotten better they aren't to the point where I'd be happy releasing a preempt'd ppc kernel. One of the things I've noticed is, play MP3s in xmms, compile a kernel, and then switch windows a lot in KDE. You'll get some serious system stuttering.... I've tried the preempt patches against vanilla sources, and benh trees. So it's not for a lack of trying =)

trance
ppc/kernel geek
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BlueShift
Tux's lil' helper
Tux's lil' helper


Joined: 04 Jun 2002
Posts: 114
Location: Belgium

PostPosted: Tue Aug 20, 2002 9:02 pm    Post subject: Reply with quote

Thanks for the warning,
My system does indeed seem to be a bit less responsive the last days.
I just tried
Code:
echo "scale=5000;4*a(1)" | bc -l

(this calculates pi to 5000 decimals)
This completely freezes my system untill the calculation is done and the load average goes up to 18.
Ha well, it promising technology anyway.
Greetings,

BTW: is there any website/forum/mailinglist where someone can follow these kinds of developments (like what kernel patches are being tried in the ppc kernel)
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