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Javier Barroso | 10 Jun 2009 08:31
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Re: vmstat output and process swapped (a question in lpi 301 exam)

Hi,
On Wed, Jun 10, 2009 at 1:12 AM, G. Matthew Rice<matt@...> wrote:
> On Tue, 2009-06-09 at 22:51 +0200, Javier Barroso wrote:
>> Where can I get vmstat reference were explain how to get this number ?
>> vmstat manpage seems to don't give any clue about.
>
> Hi Javier,
>
> It's a read-between-the-lines question.  You need to be able to analyze
> the various metrics and "figure it out".
If manpage don't talk about that question, I can't "figure it out"

In my debian system column "w" doesn't appear. I take a look to vmstat
in Redhat 4.1 and openSuse 11.0 systems and 'w' doesn't appeart too.

So, if it is a linux exam, why include w column?

From "System Performance Tunning":

w: "runnable-but-swapped" queue

I luckyly hit the answer

>
>
>> There was at least one ambiguous question in the exam, perhaps, a
>> button 'ambiguous' in the exam program could help making better the
>> exams in the future.
>
> There is.  It's called the "Comment" button. ;)
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G. Matthew Rice | 12 Jun 2009 18:04

Re: vmstat output and process swapped (a question in lpi 301 exam)

Javier Barroso <javibarroso@...> writes:
> In my debian system column "w" doesn't appear. I take a look to vmstat
> in Redhat 4.1 and openSuse 11.0 systems and 'w' doesn't appeart too.
> 
> So, if it is a linux exam, why include w column?

I have a feeling that this question was created on an older Linux distro.

It used to be there.  I just checked one of the older systems that we manage:

matt <at> newsol:~[101]% vmstat
   procs                      memory    swap          io     system     cpu
 r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us sy id
 2  0  0 129208  41912 212548 139620   0   0     1     0    0     1   0 0  0

There is another way to tell without the 'w', though ;)

> > There is. It's called the "Comment" button. ;)
> I made a comment, is this comment read by any people ?

They are reviewed before exams are refreshed.

> Thanks for your time

My pleasure.  Also, if you are keen to help improve the exams, in general,
you should consider joining the lpi-examdev mailing list:

        http://list.lpi.org/mailman/listinfo/lpi-examdev

Regards,
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