Question Re AC Patch with VM Tuneable Parms for now

Question Re AC Patch with VM Tuneable Parms for now

[John L. Males]

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Hello,

Please note I am not on the kernel mailing list so I would appreciate
being copied in on any reply made.

Can someone advise me if the "Make several vm behaviours tunable for
now" as of the 2.4.9-ac4 patch are implemented in the kernel .config
file?  If so is there an easy way to carry forward a 2.4.8 version of
the .config file using "make xconfig" so that I do not have to set
all the setting I have made from scratch?  I get the sense from the
Kernel documentation that one can run a process that will ask one
only those parameters that have been changed or added rather that all
of them, but best I can tell this is a console y/n/?? type response.


Regards,

John L. Males
Willowdale, Ontario
Canada
04 September 2001 02:29
mailto:jlmales@softhome.net

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"Boooomer ... Boom Boom, how are you Boom Boom" Boomer 1985 - February/2000

Re: Question Re AC Patch with VM Tuneable Parms for now

[Doug McNaught]

"John L. Males" <jlmales@softhome.net> writes:

> Can someone advise me if the "Make several vm behaviours tunable for
> now" as of the 2.4.9-ac4 patch are implemented in the kernel .config
> file?  If so is there an easy way to carry forward a 2.4.8 version of
> the .config file using "make xconfig" so that I do not have to set
> all the setting I have made from scratch?  I get the sense from the
> Kernel documentation that one can run a process that will ask one
> only those parameters that have been changed or added rather that all
> of them, but best I can tell this is a console y/n/?? type response.

You have to do the carry-forward on the command line, using 
'make oldconfig'.  It will prompt you to answer any questions that
aren't in the old config file, which will usually be fairly few.  So
it's not that bad, and you only have to do it once per upgrade.

Once you've done it, you can use 'menuconfig' as usual to tune your
configuration.  

BTW, it's quite likely (though I haven't looked at it) that the
VM tunables are in /proc rather than being config options.

-Doug
-- 
Free Dmitry Sklyarov! 
http://www.freesklyarov.org/ 

We will return to our regularly scheduled signature shortly.

Re: Question Re AC Patch with VM Tuneable Parms for now

[John L. Males]

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Doug,

Thanks for taking the time to reply and refreshing my memory about
menu oldconfig.

I imply from your reply that there is no carry forward feature via
the menu xconfig.  I guess it was wishful thinking in my original
message there might be.  Not an big issue, just thought I ask in case
I missed something in reading and searching the kernel doc.

Thanks for tip that the tuneable VM items may be implemented via
/proc.


Regards,

John L. Males
Willowdale, Ontario
Canada
04 September 2001 14:49
mailto:jlmales@softhome.net


To:             	jlmales@softhome.net
Copies to:      	linux-kernel@vger.kernel.org
Subject:        	Re: Question Re AC Patch with VM Tuneable Parms for
now
From:           	Doug McNaught <doug@wireboard.com>
Date sent:      	04 Sep 2001 10:59:55 -0400

> "John L. Males" <jlmales@softhome.net> writes:
> 
> > Can someone advise me if the "Make several vm behaviours tunable
> > for now" as of the 2.4.9-ac4 patch are implemented in the kernel
> > .config file?  If so is there an easy way to carry forward a
> > 2.4.8 version of the .config file using "make xconfig" so that I
> > do not have to set all the setting I have made from scratch?  I
> > get the sense from the Kernel documentation that one can run a
> > process that will ask one only those parameters that have been
> > changed or added rather that all of them, but best I can tell
> > this is a console y/n/?? type response.
> 
> You have to do the carry-forward on the command line, using 
> 'make oldconfig'.  It will prompt you to answer any questions that
> aren't in the old config file, which will usually be fairly few. 
> So it's not that bad, and you only have to do it once per upgrade.
> 
> Once you've done it, you can use 'menuconfig' as usual to tune your
> configuration.  
> 
> BTW, it's quite likely (though I haven't looked at it) that the
> VM tunables are in /proc rather than being config options.
> 
> -Doug
> -- 
> Free Dmitry Sklyarov! 
> http://www.freesklyarov.org/ 
> 
> We will return to our regularly scheduled signature shortly.


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"Boooomer ... Boom Boom, how are you Boom Boom" Boomer 1985 - February/2000

Re: Question Re AC Patch with VM Tuneable Parms for now

[Alan Cox]

> Can someone advise me if the "Make several vm behaviours tunable for
> now" as of the 2.4.9-ac4 patch are implemented in the kernel .config
> file?  If so is there an easy way to carry forward a 2.4.8 version of

They are in /proc

> the .config file using "make xconfig" so that I do not have to set
> all the setting I have made from scratch?  I get the sense from the

Make oldconfig

Re[05]: Question Re AC Patch with VM Tuneable Parms for now

[John L. Males]

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Alan,

Thanks for confirming the VM tuneable parameters are set via the
/proc.


Regards,

John L. Males
Willowdale, Ontario
Canada
04 September 2001 13:54
mailto:jlmales@softhome.net


Subject:        	Re: Question Re AC Patch with VM Tuneable Parms for
now
To:             	jlmales@softhome.net
Date sent:      	Tue, 4 Sep 2001 16:20:29 +0100 (BST)
Copies to:      	linux-kernel@vger.kernel.org
From:           	Alan Cox <alan@lxorguk.ukuu.org.uk>

> > Can someone advise me if the "Make several vm behaviours tunable
> > for now" as of the 2.4.9-ac4 patch are implemented in the kernel
> > .config file?  If so is there an easy way to carry forward a
> > 2.4.8 version of
> 
> They are in /proc
> 
> > the .config file using "make xconfig" so that I do not have to
> > set all the setting I have made from scratch?  I get the sense
> > from the 
> 
> Make oldconfig


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"Boooomer ... Boom Boom, how are you Boom Boom" Boomer 1985 - February/2000

Re: Question Re AC Patch with VM Tuneable Parms for now

[Rik van Riel]

On Tue, 4 Sep 2001, John L. Males wrote:

> Can someone advise me if the "Make several vm behaviours tunable for
> now" as of the 2.4.9-ac4 patch are implemented in the kernel .config
> file?

Some info can be found on http://linux-mm.org/wiki/moin.cgi/PageAging
(IIRC, but could also be another page on the wiki).

cheers,

Rik
-- 
IA64: a worthy successor to i860.

http://www.surriel.com/		http://distro.conectiva.com/

Send all your spam to aardvark@nl.linux.org (spam digging piggy)

Re[06]: Question Re AC Patch with VM Tuneable Parms for now

[John L. Males]

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Rik,

Thanks for taking the time to reply.

The URL you noted was most helpful in how the VM Tuneable parameters
can be set with the AC7 patch.

Correct me if I am wrong, but I sense the respective patches were not
implemented until 2.4.9-ac4, or were they implemented once before in
the noted 2.4.8-ac7 patch and I just did not understand the details
of the changes?

Follow up question re "A patch against kernel 2.4.8-ac7 has been
created which allows you to play with page aging strategies as well
as setting a static inactive target and switch drop_behind on and
off. The page aging strategies are:"

Where is the "static inactive target and switch drop_behind on and
off" items explained, and how are these set?


Regards,

John L. Males
Willowdale, Ontario
Canada
04 September 2001 14:10
mailto:jlmales@softhome.net


Date sent:      	Tue, 4 Sep 2001 13:48:33 -0300 (BRST)
From:           	Rik van Riel <riel@conectiva.com.br>
To:             	"John L. Males" <jlmales@softhome.net>
Copies to:      	<linux-kernel@vger.kernel.org>
Subject:        	Re: Question Re AC Patch with VM Tuneable Parms for
now

> On Tue, 4 Sep 2001, John L. Males wrote:
> 
> > Can someone advise me if the "Make several vm behaviours tunable
> > for now" as of the 2.4.9-ac4 patch are implemented in the kernel
> > .config file?
> 
> Some info can be found on
> http://linux-mm.org/wiki/moin.cgi/PageAging (IIRC, but could also
> be another page on the wiki).
> 
> cheers,
> 
> Rik
> -- 
> IA64: a worthy successor to i860.
> 
> http://www.surriel.com/		http://distro.conectiva.com/
> 
> Send all your spam to aardvark@nl.linux.org (spam digging piggy)
> 


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"Boooomer ... Boom Boom, how are you Boom Boom" Boomer 1985 - February/2000