[hobbit] iostat

[Martin Flemming]

Hi !

> Of course, the script was more a proof of concept.  I had the iostat numbers
> on aix, so it was not that hard to change it for linux.

.. maybe for you .. :-)

> I will update the script and add such feature.

Nice to hear .. thanks !


>> I've got three empty links in the trend=page
>> to iostat-disk, how could i delete them or is there a
>> association with a) ?
> Euh, can you upload the graph somewhere so I can see it ?

Not really important, maybe my own false configuration,
i will answer again, if i've checked it again ...

> Writes are negative, reads are positive.  This is defined in the hobbit-graph.

Right, it's plausible and documented, thanks  ...


> I just saw in my script and it also collects the statistics in blocks per
> second.  And by combining the blocks and bytes / second you can get the block
> size.  I can add such graph definitions if anyone is interested....

Yep, my vote, you have ... :-)

>
> Maybe I can write a howto based on this script...  so anyonce can create a
> graph from a number.


I think this will be great !


Cheers & thanks again !

 	martin





On Fri, 7 Nov 2008, Stef Coene wrote:

> On Friday 07 November 2008, Martin Flemming wrote:
>> Great Stuff, Stef !
>>
>> ... three more questions,
>>
>> a) is it possible to declare some excludes
>> or something for only active-disks ?
>>
>> e.g. md0 , the most of my machines have not software-mirror
>>             but some .....
>>
>> or
>>
>> /dev/hdd or /dev/cdrom .. in my graph's
>> it appears as hdd but that's the cdrom and it's empty ....
> Of course, the script was more a proof of concept.  I had the iostat numbers
> on aix, so it was not that hard to change it for linux.
> I will update the script and add such feature.
>
>> b)
>>
>> I've got three empty links in the trend=page
>> to iostat-disk, how could i delete them or is there a
>> association with a) ?
> Euh, can you upload the graph somewhere so I can see it ?
>
>> c)
>>
>> I've got negative KB/s on some y-axis ... hmm, why ?
> Writes are negative, reads are positive.  This is defined in the hobbit-graph.
> The numbers in the rrd file are fine.
>
> I just saw in my script and it also collects the statistics in blocks per
> second.  And by combining the blocks and bytes / second you can get the block
> size.  I can add such graph definitions if anyone is interested....
>
> Maybe I can write a howto based on this script...  so anyonce can create a
> graph from a number.
>
>
> Stef
>