[gentoo-user] sys-kernel/ck-sources - why should I use them?

[gentoo-user] sys-kernel/ck-sources - why should I use them?

[Helmut Jarausch]

Hi,

has anybody experience with these new sys-kernel/ck-sources?
I could only see they have additional patches (in addition to those
of gentoo-sources).
But I didn't find which patches and why these have only been applied to
ck-sources?

Thanks for your opinion,
Helmut.

-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Justin]

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On 20/04/10 09:47, Helmut Jarausch wrote:
> Hi,
> 
> has anybody experience with these new sys-kernel/ck-sources?
> I could only see they have additional patches (in addition to those
> of gentoo-sources).
> But I didn't find which patches and why these have only been applied to
> ck-sources?
> 
> Thanks for your opinion,
> Helmut.
> 

http://www.linux-magazin.de/NEWS/Con-Kolivas-meldet-sich-mit-neuem-Scheduler-zurueck

http://translate.google.com/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.linux-magazin.de%2FNEWS%2FCon-Kolivas-meldet-sich-mit-neuem-Scheduler-zurueck&sl=de&tl=en


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Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Helmut Jarausch]

On 20 Apr, Justin wrote:
> On 20/04/10 09:47, Helmut Jarausch wrote:
>> Hi,
>> 
>> has anybody experience with these new sys-kernel/ck-sources?
>> I could only see they have additional patches (in addition to those
>> of gentoo-sources).
>> But I didn't find which patches and why these have only been applied to
>> ck-sources?
>> 
>> Thanks for your opinion,
>> Helmut.
>> 
> 
> http://www.linux-magazin.de/NEWS/Con-Kolivas-meldet-sich-mit-neuem-Scheduler-zurueck
> 
> http://translate.google.com/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.linux-magazin.de%2FNEWS%2FCon-Kolivas-meldet-sich-mit-neuem-Scheduler-zurueck&sl=de&tl=en
> 

Many thanks, that's very interesting. I'll try this patchset.
Helmut.

-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Volker Armin Hemmann]

On Dienstag 20 April 2010, Helmut Jarausch wrote:
> Hi,
> 
> has anybody experience with these new sys-kernel/ck-sources?
> I could only see they have additional patches (in addition to those
> of gentoo-sources).
> But I didn't find which patches and why these have only been applied to
> ck-sources?
> 
> Thanks for your opinion,
> Helmut.

if you have more than 2 cores, you shouldn't use them ;)

Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Helmut Jarausch]

On 20 Apr, Volker Armin Hemmann wrote:
> On Dienstag 20 April 2010, Helmut Jarausch wrote:
>> Hi,
>> 
>> has anybody experience with these new sys-kernel/ck-sources?
>> I could only see they have additional patches (in addition to those
>> of gentoo-sources).
>> But I didn't find which patches and why these have only been applied to
>> ck-sources?
>> 
>> Thanks for your opinion,
>> Helmut.
> 
> if you have more than 2 cores, you shouldn't use them ;)

Why, it's said to scale well up to 16 cores (at least)?

Helmut.

-- 
Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Volker Armin Hemmann]

On Dienstag 20 April 2010, Helmut Jarausch wrote:
> On 20 Apr, Volker Armin Hemmann wrote:
> > On Dienstag 20 April 2010, Helmut Jarausch wrote:
> >> Hi,
> >> 
> >> has anybody experience with these new sys-kernel/ck-sources?
> >> I could only see they have additional patches (in addition to those
> >> of gentoo-sources).
> >> But I didn't find which patches and why these have only been applied to
> >> ck-sources?
> >> 
> >> Thanks for your opinion,
> >> Helmut.
> > 
> > if you have more than 2 cores, you shouldn't use them ;)
> 
> Why, it's said to scale well up to 16 cores (at least)?
> 
> Helmut.

different people had different results. 

[gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Nikos Chantziaras]

On 04/20/2010 05:41 PM, Helmut Jarausch wrote:
> On 20 Apr, Volker Armin Hemmann wrote:
>> On Dienstag 20 April 2010, Helmut Jarausch wrote:
>>> Hi,
>>>
>>> has anybody experience with these new sys-kernel/ck-sources?
>>> I could only see they have additional patches (in addition to those
>>> of gentoo-sources).
>>> But I didn't find which patches and why these have only been applied to
>>> ck-sources?
>>>
>>> Thanks for your opinion,
>>> Helmut.
>>
>> if you have more than 2 cores, you shouldn't use them ;)
>
> Why, it's said to scale well up to 16 cores (at least)?

It's practically *made* for 2 and 4 cores.  Single core enhancements 
were added later.

Volker's recommendations is based on his own tests with the patches. 
I'm on a dual core Intel E6600 and the patches help a big deal to keep 
the GUI responsive and fluid.

Also note that there's much hate and fanboy-ism around this issue. 
Expect people telling you how this is crap, or how the default Linux 
scheduler is crap, etc, without them really having a clue what they're 
talking about.  (I am *not* referring to Volker here, mind you.)

Re: [gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Volker Armin Hemmann]

On Dienstag 20 April 2010, Nikos Chantziaras wrote:
> On 04/20/2010 05:41 PM, Helmut Jarausch wrote:
> > On 20 Apr, Volker Armin Hemmann wrote:
> >> On Dienstag 20 April 2010, Helmut Jarausch wrote:
> >>> Hi,
> >>> 
> >>> has anybody experience with these new sys-kernel/ck-sources?
> >>> I could only see they have additional patches (in addition to those
> >>> of gentoo-sources).
> >>> But I didn't find which patches and why these have only been applied to
> >>> ck-sources?
> >>> 
> >>> Thanks for your opinion,
> >>> Helmut.
> >> 
> >> if you have more than 2 cores, you shouldn't use them ;)
> > 
> > Why, it's said to scale well up to 16 cores (at least)?
> 
> It's practically *made* for 2 and 4 cores.  Single core enhancements
> were added later.
> 
> Volker's recommendations is based on his own tests with the patches.
> I'm on a dual core Intel E6600 and the patches help a big deal to keep
> the GUI responsive and fluid.
> 
> Also note that there's much hate and fanboy-ism around this issue.
> Expect people telling you how this is crap, or how the default Linux
> scheduler is crap, etc, without them really having a clue what they're
> talking about.  (I am *not* referring to Volker here, mind you.)

to be honest - whenever I try ck patches I see zero improvements - so I stay 
with my usual kernel-policy: the less patches the better and scrap them. 

Re: [gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Stroller]

On 20 Apr 2010, at 09:02, Nikos Chantziaras wrote:
> ...
>> But I didn't find which patches and why these have only been  
>> applied to
>> ck-sources?
>
> They did not get "applied to ck-sources."  ck-sources *is* the  
> patches.

Hmmm.... this seems to be an issue of semantics.

When one runs `emerge ck-sources` one presumably will have a set of  
kernel sources with Mr CK's patches applied. I don't suppose that  
`emerge ck-sources` downloads the patches only, and leaves them to be  
applied by hand!

Stroller.

Re: [gentoo-user] sys-kernel/ck-sources - why should I use them?

[Alan McKinnon]

On Tuesday 20 April 2010 16:41:03 Helmut Jarausch wrote:
> On 20 Apr, Volker Armin Hemmann wrote:
> > On Dienstag 20 April 2010, Helmut Jarausch wrote:
> >> Hi,
> >> 
> >> has anybody experience with these new sys-kernel/ck-sources?
> >> I could only see they have additional patches (in addition to those
> >> of gentoo-sources).
> >> But I didn't find which patches and why these have only been applied to
> >> ck-sources?
> >> 
> >> Thanks for your opinion,
> >> Helmut.
> > 
> > if you have more than 2 cores, you shouldn't use them ;)
> 
> Why, it's said to scale well up to 16 cores (at least)?


Does ck-sources apply the bfs patches?


-- 
alan dot mckinnon at gmail dot com

[gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Nikos Chantziaras]

On 04/21/2010 12:59 PM, Alan McKinnon wrote:
> On Tuesday 20 April 2010 16:41:03 Helmut Jarausch wrote:
>> On 20 Apr, Volker Armin Hemmann wrote:
>>> On Dienstag 20 April 2010, Helmut Jarausch wrote:
>>>> Hi,
>>>>
>>>> has anybody experience with these new sys-kernel/ck-sources?
>>>> I could only see they have additional patches (in addition to those
>>>> of gentoo-sources).
>>>> But I didn't find which patches and why these have only been applied to
>>>> ck-sources?
>>>>
>>>> Thanks for your opinion,
>>>> Helmut.
>>>
>>> if you have more than 2 cores, you shouldn't use them ;)
>>
>> Why, it's said to scale well up to 16 cores (at least)?
>
>
> Does ck-sources apply the bfs patches?

Yes.  Though it applies everything, not just BFS, and I'm not sure if 
this a good idea or not.

Re: [gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Alan McKinnon]

On Wednesday 21 April 2010 12:08:47 Nikos Chantziaras wrote:
> On 04/21/2010 12:59 PM, Alan McKinnon wrote:
> > On Tuesday 20 April 2010 16:41:03 Helmut Jarausch wrote:
> >> On 20 Apr, Volker Armin Hemmann wrote:
> >>> On Dienstag 20 April 2010, Helmut Jarausch wrote:
> >>>> Hi,
> >>>> 
> >>>> has anybody experience with these new sys-kernel/ck-sources?
> >>>> I could only see they have additional patches (in addition to those
> >>>> of gentoo-sources).
> >>>> But I didn't find which patches and why these have only been applied
> >>>> to ck-sources?
> >>>> 
> >>>> Thanks for your opinion,
> >>>> Helmut.
> >>> 
> >>> if you have more than 2 cores, you shouldn't use them ;)
> >> 
> >> Why, it's said to scale well up to 16 cores (at least)?
> > 
> > Does ck-sources apply the bfs patches?
> 
> Yes.  Though it applies everything, not just BFS, and I'm not sure if
> this a good idea or not.

How is ck-sources different from zen-sources? 

zen-sources seems to be a gigantic mixing pot of every possible patch set ever 
written that might be useful to someone somewhere...


-- 
alan dot mckinnon at gmail dot com

[gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Nikos Chantziaras]

On 04/21/2010 01:26 PM, Alan McKinnon wrote:
> On Wednesday 21 April 2010 12:08:47 Nikos Chantziaras wrote:
>> On 04/21/2010 12:59 PM, Alan McKinnon wrote:
>>> On Tuesday 20 April 2010 16:41:03 Helmut Jarausch wrote:
>>>> On 20 Apr, Volker Armin Hemmann wrote:
>>>>> On Dienstag 20 April 2010, Helmut Jarausch wrote:
>>>>>> Hi,
>>>>>>
>>>>>> has anybody experience with these new sys-kernel/ck-sources?
>>>>>> I could only see they have additional patches (in addition to those
>>>>>> of gentoo-sources).
>>>>>> But I didn't find which patches and why these have only been applied
>>>>>> to ck-sources?
>>>>>>
>>>>>> Thanks for your opinion,
>>>>>> Helmut.
>>>>>
>>>>> if you have more than 2 cores, you shouldn't use them ;)
>>>>
>>>> Why, it's said to scale well up to 16 cores (at least)?
>>>
>>> Does ck-sources apply the bfs patches?
>>
>> Yes.  Though it applies everything, not just BFS, and I'm not sure if
>> this a good idea or not.
>
> How is ck-sources different from zen-sources?

ck-sources only applies CK's patches.

Re: [gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[Neil Bothwick]

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On Wed, 21 Apr 2010 12:26:13 +0200, Alan McKinnon wrote:

> > Yes.  Though it applies everything, not just BFS, and I'm not sure if
> > this a good idea or not.  
> 
> How is ck-sources different from zen-sources? 
> 
> zen-sources seems to be a gigantic mixing pot of every possible patch
> set ever written that might be useful to someone somewhere...

Maybe some sort of super-sources package, with the various patches
controlled by USE flags would be a good idea. Then we could have a kernel
with just the patches we want, like:

USE="gentoo reiser4 -bfs" emerge super-sources


-- 
Neil Bothwick

What do you have when you have six lawyers buried up to their necks in
sand? Not enough sand.

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Re: [gentoo-user] Re: sys-kernel/ck-sources - why should I use them?

[KH]

Am 21.04.2010 13:14, schrieb Neil Bothwick:
>
> Maybe some sort of super-sources package, with the various patches
> controlled by USE flags would be a good idea. Then we could have a kernel
> with just the patches we want, like:
>
> USE="gentoo reiser4 -bfs" emerge super-sources
>
>

Are we too late for google summer of code 2010?

kh