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<div class="moz-cite-prefix">Eugene,<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">There is never a guarantee that you
will get all the probes requested, since some of them may be
faulty, disconnecting, probe busyness limiting, etc. In such cases
you should request a bit more to make the number of participants
be closer to your desired quantity.</div>
<div class="moz-cite-prefix"> <br>
<div class="moz-cite-prefix">The scheduling process is a
two-stage. First stage happens on nearly-real-time probe data on
the central scheduler then it is split and passed down to
controllers, where the probes connected to and that have the
real picture of the probes state. Based on that knowledge
controllers filter the probe list further.
</div>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">There is the probe diagnostic system
that use some heuristics to detect faulty probes and tag them, it
works quite well but again it is very difficult to cover all the
cases. We are working on improving that.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Best regards</div>
<div class="moz-cite-prefix">/vty<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 5/7/20 9:28 AM, Evgeniy S. wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAHbBxiRbd5TNZO7ahUQQAPAhdzufWZdkS+hWZu_310oVNBcjCA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Thanks Viktor, <br>
<br>
It was also my understanding of root cause of this problem. <br>
<br>
I did test again selecting 500 probes in EU region: 500
Requested / 429 Actually Participating<br>
<br>
Does it mean that all of them have same issue as mine of there
are other reasons why selected probes are not participating?<br>
<br>
Do you know if there is any plan to make any self-check on probe
to diagnose this kind of problems proactively?<br>
<br>
--<br>
Evgeniy</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, May 7, 2020 at 10:10
AM Viktor Naumov <<a href="mailto:vnaumov@ripe.net"
moz-do-not-send="true">vnaumov@ripe.net</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div>
<div>Hi Eugene,</div>
<br>
<p>I've checked the activity log of your probe and it makes
me strongly suspect that the USB flash is corrupt, either
the filesystem of the drive itself.<br>
</p>
<p>Please follow these steps to recover your probe: <a
href="https://labs.ripe.net/Members/philip_homburg/troubleshooting-ripe-atlas-probes-usb-sticks"
target="_blank" moz-do-not-send="true">https://labs.ripe.net/Members/philip_homburg/troubleshooting-ripe-atlas-probes-usb-sticks</a></p>
<p>It can happen sometimes that a probe is shown green but
it refuses to accept commands.<br>
</p>
<p><br>
</p>
<p>Best regards</p>
<p>RIPE NCC R&D<br>
</p>
<p>/vty</p>
<p><br>
</p>
<div>On 5/6/20 7:50 PM, Evgeniy S. wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>Dear RIPE guys, </div>
<div><br>
</div>
<div>one of probes hosted by us <a
href="https://atlas.ripe.net/probes/35439/"
target="_blank" moz-do-not-send="true">https://atlas.ripe.net/probes/35439/</a>
shows as connected and good to go, but when I create
any measurements with this ID I see "<span>1
Requested / None yet Actually Participating" </span><br>
</div>
<div><br>
</div>
<div>Please advice what's wrong with it and how to
troubleshoot?</div>
<div><br>
</div>
<div dir="ltr">
<div dir="ltr">--<br>
With regards,<br>
Eugene Sudyr<br>
</div>
</div>
</div>
</div>
</blockquote>
<p><br>
</p>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">--<br>
With regards,<br>
Eugene Sudyr<br>
</div>
</blockquote>
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