<div dir="ltr">Hi Eoghan and every body;<div><br></div><div>Please i am blocked on one point. I need to know some mapping formulas. For example the QoS availability is calculated through the low level metric uptime and downtime. And the used formulas is: availability = 1- (uptime/downtime+uptime).</div>

<div>Please whom know others formulas to calculate others QoS through low level.</div><div>For example:</div><div>Throughput???</div><div>Reliability???</div><div>Cost???</div><div><br></div><div>Thank you </div><div>Yours,</div>

<div>Rima</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-01-02 16:11 GMT+01:00 Eoghan Glynn <span dir="ltr"><<a href="mailto:eglynn@redhat.com" target="_blank">eglynn@redhat.com</a>></span>:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Hi Rima,<br>
<br>
What precisely do you mean by QoS values?<br>
<br>
Are you talking about the responsiveness of an API service?<br>
<br>
That is not something that you can directly derive from the<br>
instance-level metrics such as CPU util & network IOPs that<br>
ceilometer collects.<br>
<br>
Cheers,<br>
Eoghan<br>
<div class=""><br>
----- Original Message -----<br>
> Hello everyone,<br>
><br>
> Please what are the formulas which can do the mappings from low levels<br>
</div>> metrics ( extracted from ceilometer ) to the QoS values.<br>
<div class="">> I know how to calculate the response time of a service from the values<br>
</div>> bandwith , inbytes ......<br>
<div class="">><br>
> Are you aware of other formulas for other values of QoS .<br>
><br>
> Thank you<br>
><br>
</div>> _______________________________________________<br>
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><br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div style="font-family:times,serif"><font size="4"><span><span><font><br><br>----------------------------------------------------------------------------------------------</font></span></span></font></div>

<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:times,serif"><font size="4"><span><span><font>Rima Grati<br></font></span></span></font></div><div style="font-family:times,serif"><font size="4">PhD student</font></div>

<div style="background-color:transparent;font-style:normal"><span style="line-height:normal;font-family:'times new roman','new york',times,serif;font-size:18px" lang="EN-US">Multimedia, InfoRmation systems & Advanced Computing Laboratory -Miracl</span></div>

<div style="background-color:transparent;font-style:normal"><span style="line-height:17px;font-family:'times new roman','new york',times,serif;font-size:18px">Sfax University</span><span style="font-family:'times new roman','new york',times,serif;font-size:18px;line-height:normal;background-color:transparent">  </span></div>

<div style="font-style:normal;font-size:18px;background-color:transparent;font-family:'times new roman','new york',times,serif"><span style="font-size:18px">Address : FSEGS, CP 1088, 3018 Sfax-Tunisia</span></div>

<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:times,serif"><font size="4"><u>-----------------------------------------------------------------------------------------------</u></font></div>

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