Hi Roland<br><br>A good comment, and one I did consider.<br>My concern with a long sample, is that it becomes "too averaged".<br>If I put one hand in the fire, and the other in liquid nitrogen, on average, I am doing fine, right? :-)<br>
<br>I think it's one of those things that will need to be flavoured to taste, depending on your requirements, which is why I changed it to be a soft parameter that could be set at server-side.<br>Ultimately, there is no difference in the results of running iostat 300 13 every hour, and iostat 300 2 every 5 minutes for one hour.<br>
And will save a lot of coding :-)<br><br>Cheers<br> Vernon<br><br><br><div class="gmail_quote">On Fri, Sep 10, 2010 at 5:56 AM, Roland Soderstrom <span dir="ltr"><<a href="mailto:rolands@logicaltech.com.au">rolands@logicaltech.com.au</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div text="#000000" bgcolor="#ffffff">
Vernon, I have an comment.<br>
<tt><br>
---------------------------------------------------------------------------------------------------------------<br>
</tt><tt>-
-<br>
</tt><tt>- 100 dollar bill
-</tt><tt>
-<br>
</tt><tt>- If you have a 10sec iostat which you run every 5min, as you
set the test to run, you get huge gaps. -<br>
- Say that your server always have a lot of IO every 3min for 1
min. -<br>
- You will probably miss all this IO, set it to the same as the
clientlaunch time 5min = 300 in the script. -<br>
- iostat need to run constantly to make accurate measurements.
- <br>
- That's why you see the default do 300
sec. -<br>
-
-<br>
---------------------------------------------------------------------------------------------------------------<br>
</tt><br>
To get better accuracy you should probably run "iostat dxn 300 13" and
run the script from clientlaunch every hour.<br>
A bit more coding to take care of the 11 "new" iostat though.<br><font color="#888888">
<br>
- Roland</font><div><div></div><div class="h5"><br>
<br>
<br>
On 9/09/10 06:56 PM, Vernon Everett wrote:
<blockquote type="cite">Just updated the code. Minor change.<br>
After discussion with a colleague we thought that a 2 second iostat
sample might not be adequate.<br>
We settled on 10, but with the update, I have made it a parameter,
which can be set at server side.<br>
<br>
Cheers<br>
Vernon<br>
<br>
<div class="gmail_quote">On Thu, Sep 9, 2010 at 1:56 PM, Vernon
Everett <span dir="ltr"><<a href="mailto:everett.vernon@gmail.com" target="_blank">everett.vernon@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi
all<br>
<br>
Just posted an iostat add-on, with graphing goodness to <span style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; font-size: medium;">
<pre><a rel="nofollow" href="http://xymonton.trantor.org/doku.php/monitors:diskstat.ksh" target="_blank">http://xymonton.trantor.org/doku.php/monitors:diskstat.ksh</a>
</pre>
</span></blockquote>
</div>
<br>
</blockquote>
</div></div></div><div><div></div><div class="h5">
To unsubscribe from the xymon list, send an e-mail to
<a href="mailto:xymon-unsubscribe@xymon.com" target="_blank">xymon-unsubscribe@xymon.com</a>
</div></div></blockquote></div><br>