Swappiness...

[Mike McCarty]

In an attempt to see what swappiness does to the performance
of my machine, I tried setting it and experimenting. Well, I
don't seem to be able to do that.

$ su -
# cd /proc/sys/vm
# cat swappiness
60
# echo 40>swappiness
 

# cat swappiness
60
# echo 75>swappiness
 

# cat swappiness
60
# uname -a
Linux Presario-1 2.6.10-1.771_FC2 #1 Mon Mar 28 00:50:14 EST 2005 i686 
i686 i386 GNU/Linux

Mike
-- 
p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
Oppose globalization and One World Governments like the UN.
This message made from 100% recycled bits.
You have found the bank of Larn.
I can explain it for you, but I can't understand it for you.
I speak only for myself, and I am unanimous in that!

[Cameron Simpson]

On 02Mar2007 16:00, Mike McCarty <Mike.McCarty(a)sbcglobal.net&gt; wrote:
| In an attempt to see what swappiness does to the performance
| of my machine, I tried setting it and experimenting. Well, I
| don't seem to be able to do that.
| 
| $ su -
| # cd /proc/sys/vm
| # cat swappiness
| 60
| # echo 40>swappiness
| # cat swappiness
| 60
[...]

Put a space before the ">". The syntax n>foo means direct file
descriptor n to the file foo. Example:

  ls 2>ls.err

which sends fd 2 (stderr) to "ls.err".
So try:

  echo 40 >swappiness

Cheers,
-- 
Cameron Simpson <cs(a)zip.com.au&gt; DoD#743
http://www.cskk.ezoshosting.com/cs/

There is this special biologist word we use for 'stable'. It is 'dead'.
        - Jack Cohen

[Aaron Konstam]

On Sat, 2007-03-03 at 16:09 +1100, Cameron Simpson wrote:
>  On 02Mar2007 16:00, Mike McCarty <Mike.McCarty(a)sbcglobal.net&gt;
> wrote:
>  | In an attempt to see what swappiness does to the performance
>  | of my machine, I tried setting it and experimenting. Well, I
>  | don't seem to be able to do that.
>  | 
>  | $ su -
>  | # cd /proc/sys/vm
>  | # cat swappiness
>  | 60
>  | # echo 40>swappiness
>  | # cat swappiness
>  | 60
>  [...]
>   
Okk, I'll bite. What is swappiness?

-- 
Aaron Konstam <akonstam(a)sbcglobal.net&gt;

[Ed Greshko]

Aaron Konstam wrote:
>  On Sat, 2007-03-03 at 16:09 +1100, Cameron Simpson wrote:
> > On 02Mar2007 16:00, Mike McCarty <Mike.McCarty(a)sbcglobal.net&gt; wrote:
> > | In an attempt to see what swappiness does to the performance
> > | of my machine, I tried setting it and experimenting. Well, I
> > | don't seem to be able to do that.
> > | 
> > | $ su -
> > | # cd /proc/sys/vm
> > | # cat swappiness
> > | 60
> > | # echo 40>swappiness
> > | # cat swappiness
> > | 60
> > [...]
> >
>  Okk, I'll bite. What is swappiness?
>   
Rather than biting....try googling.  "swappiness linux"

-- 
heavy, adj.:
	Seduced by the chocolate side of the force.

[Aaron Konstam]

On Sat, 2007-03-03 at 22:44 +0800, Ed Greshko wrote:
>  Aaron Konstam wrote:
>  > On Sat, 2007-03-03 at 16:09 +1100, Cameron Simpson wrote:
>  >> On 02Mar2007 16:00, Mike McCarty <Mike.McCarty(a)sbcglobal.net&gt; wrote:
>  >> | In an attempt to see what swappiness does to the performance
>  >> | of my machine, I tried setting it and experimenting. Well, I
>  >> | don't seem to be able to do that.
>  >> | 
>  >> | $ su -
>  >> | # cd /proc/sys/vm
>  >> | # cat swappiness
>  >> | 60
>  >> | # echo 40>swappiness
>  >> | # cat swappiness
>  >> | 60
>  >> [...]
>  >>
>  > Okk, I'll bite. What is swappiness?
>  > 
>  
>  Rather than biting....try googling.  "swappiness linux"
>   
Very good. Doing the google confirmed whast I said recently on the list
that swap is really not part of the standard VM operation of the kernel.
-- 
Aaron Konstam <akonstam(a)sbcglobal.net&gt;

[Mike McCarty]

Cameron Simpson wrote:
>  On 02Mar2007 16:00, Mike McCarty <Mike.McCarty(a)sbcglobal.net&gt;
> wrote:
>  | In an attempt to see what swappiness does to the performance
>  | of my machine, I tried setting it and experimenting. Well, I
>  | don't seem to be able to do that.
>  | 
>  | $ su -
>  | # cd /proc/sys/vm
>  | # cat swappiness
>  | 60
>  | # echo 40>swappiness
>  | # cat swappiness
>  | 60
>  [...]
>  
>  Put a space before the ">". The syntax n>foo means direct file
>  descriptor n to the file foo. Example: 
I know that! Why didn't I see it? Thanks!

Mike
-- 
p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
Oppose globalization and One World Governments like the UN.
This message made from 100% recycled bits.
You have found the bank of Larn.
I can explain it for you, but I can't understand it for you.
I speak only for myself, and I am unanimous in that!